3 # This defines some general, useful functions.
5 #hmmm: starting to get a bit beefy in here. perhaps there is a good way to refactor the functions into more specific folders, if they aren't really totally general purpose?
9 # test whether we've been here before or not.
11 type function_sentinel &>/dev/null
13 # there was no error, so we can skip the inits.
14 if [ ! -z "$DEBUG_FEISTY_MEOW" ]; then
15 echo "skipping function definitions, because already defined."
22 if [ -z "$skip_all" ]; then
24 if [ ! -z "$DEBUG_FEISTY_MEOW" ]; then
25 echo "feisty meow function definitions beginning now..."
28 # a handy little method that can be used for date strings. it was getting
29 # really tiresome how many different ways the script did the date formatting.
30 function date_stringer() {
32 if [ -z "$sep" ]; then sep='_'; fi
33 date +"%Y$sep%m$sep%d$sep%H%M$sep%S" | tr -d '/\n/'
36 # a wrapper for the which command that finds items on the path. some OSes
37 # do not provide which, so we want to not be spewing errors when that
42 local WHICHER="$(/usr/bin/which which 2>/dev/null)"
43 #>&2 echo "got whicher as: $WHICHER"
45 # there is no which command here. we produce nothing due to this.
49 local sporkenz # must be defined local here, before call, or we don't get exit value?!
50 sporkenz=$($WHICHER "$to_find" 2>/dev/null)
51 #>&2 echo "broken with this line, but here is exit val: $?"
53 #>&2 echo "got whicher as: $WHICHER"
58 # makes a directory of the name specified and then tries to change the
59 # current directory to that directory.
61 if [ ! -d "$1" ]; then mkdir -p "$1"; fi
65 # returns true if the variable is an array.
67 [[ "$(declare -p $1)" =~ "declare -a" ]]
70 # returns true if the name provided is a defined alias.
76 # makes the status of pipe number N (passed as first parameter) into the
77 # main return value (i.e., the value for $?). this is super handy to avoid
78 # repeating the awkward looking code below in multiple places.
79 # the numbering starts at zero, for the first item at the head of the pipe.
80 function promote_pipe_return()
82 ( exit ${PIPESTATUS[$1]} )
87 function fm_username()
89 # see if we can get the user name from the login name. oddly this sometimes doesn't work.
90 local custom_user="$(logname 2>/dev/null)"
91 if [ -z "$custom_user" ]; then
92 # try the normal unix user variable.
95 if [ -z "$custom_user" ]; then
96 # try the windows user variable.
97 custom_user="$USERNAME"
104 # displays the value of a variable in bash friendly format.
109 local varname="$1"; shift
110 if [ -z "$varname" ]; then
114 if is_alias "$varname"; then
115 #echo found $varname is alias
116 local tmpfile="$(mktemp $TMP/aliasout.XXXXXX)"
117 alias $varname | sed -e 's/.*=//' >$tmpfile
118 echo "alias $varname=$(cat $tmpfile)"
120 elif [ -z "${!varname}" ]; then
121 echo "$varname undefined"
123 if is_array "$varname"; then
124 #echo found $varname is array var
126 eval temparray="(\${$varname[@]})"
127 echo "$varname=(${temparray[@]})"
128 #hmmm: would be nice to print above with elements enclosed in quotes, so that we can properly
129 # see ones that have spaces in them.
131 #echo found $varname is simple
132 echo "$varname=${!varname}"
141 # when passed a list of things, this will return the unique items from that list as an echo.
144 # do the uniquification: split the space separated items into separate lines, then
145 # sort the list, then run the uniq tool on the list. results will be packed back onto
146 # one line when invoked like: local fredlist="$(uniquify a b c e d a e f a e d b)"
147 echo $* | tr ' ' '\n' | sort | uniq
150 # sets the variable in parameter 1 to the value in parameter 2, but only if
151 # that variable was undefined.
152 function set_var_if_undefined()
154 local var_name="$1"; shift
155 local var_value="$1"; shift
156 if [ -z "${!var_name}" ]; then
157 eval export $var_name="$var_value"
163 function success_sound()
165 if [ ! -z "$CLAM_FINISH_SOUND" ]; then
166 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_FINISH_SOUND"
170 function error_sound()
172 if [ ! -z "$CLAM_ERROR_SOUND" ]; then
173 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_ERROR_SOUND"
179 # echoes the maximum number of columns that the terminal supports. usually
180 # anything you print to the terminal with length less than (but not equal to)
181 # maxcols will never wrap.
182 function get_maxcols()
184 # calculate the number of columsn in the terminal.
185 local cols=$(stty size | awk '{print $2}')
191 # checks the result of the last command that was run, and if that failed,
192 # then this complains and exits from bash. the function parameters are
193 # used as the message to print as a complaint.
194 function exit_on_error()
196 if [ $? -ne 0 ]; then
197 echo -e "\n\nan important action failed and this script will stop:\n\n$*\n\n*** Exiting script..."
203 # like exit_on_error, but will keep going after complaining.
204 function continue_on_error()
206 if [ $? -ne 0 ]; then
207 echo -e "\n\na problem occurred, but we can continue:\n\n$*\n\n=> Continuing script..."
214 # accepts any number of arguments and outputs them to the feisty meow event log.
215 function log_feisty_meow_event()
217 echo -e "$(date_stringer) -- ${USER}@$(hostname): $*" >> "$FEISTY_MEOW_EVENT_LOG"
222 # wraps secure shell with some parameters we like, most importantly to enable X forwarding.
226 save_terminal_title # remember the current terminal title.
227 /usr/bin/ssh -C "${args[@]}"
228 #hmmm: removed -Y flag because considered dangerous to trust remote hosts to not abuse our X session.
229 restore_terminal_title
232 # this version of ssh preserves the use of the -Y flag for when X forwarding is needed.
236 save_terminal_title # remember the current terminal title.
237 /usr/bin/ssh -Y "${args[@]}"
238 restore_terminal_title
243 # locates a process given a search pattern to match in the process list.
245 # + the -u flag specifies a user name, e.g. "-u joe", which causes only
246 # the processes of that user "joe" to be considered.
248 # + the -x flag specifies a pattern to exclude from the list, e.g. "-x pszap.sh"
249 # would ignore any processes that mention the phrase "pszap.sh".
252 # default user flag is for all users.
253 local excluder="ScrengeflebbitsAPhraseWeNeverExpecttomatchanythingYO298238"
254 # for our default, pick an exclusion string we would never match.
257 while [ $found_flag -eq 1 ]; do
258 # reset our sentinel now that we're safely in our loop.
261 # save the first argument, since we're going to shift the args.
263 if [ "$arg1" == "-u" ]; then
264 # handle the user flag.
266 #echo "found a -u parm and user=$2"
267 found_flag=1 # signal that we found one.
268 # skip these two arguments, since we've consumed them.
271 elif [ "$arg1" == "-x" ]; then
272 # handle the exclusion flag.
274 #echo "found a -x parm and excluder=$excluder"
275 found_flag=1 # signal that we found one.
276 # skip these two arguments, since we've consumed them.
282 # now that we've yanked any flags out, we can pull the rest of the
283 # arguments in as patterns to seek in the process list.
284 local -a patterns=("${@}")
286 #echo patterns list is: "${patterns[@]}"
289 local PID_DUMP="$(mktemp "$TMP/zz_pidlist.XXXXXX")"
292 if [ "$OS" == "Windows_NT" ]; then
293 # gets cygwin's (god awful) ps to show windoze processes also.
294 local EXTRA_DOZER_FLAGS="-W"
295 # pattern to use for peeling off the process numbers.
296 local pid_finder_pattern='s/ *\([0-9][0-9]*\) *.*$/\1/p'
299 # flags which clean up the process listing output on unixes.
300 # apparently cygwin doesn't count as a type of unix, because their
301 # crummy specialized ps command doesn't support normal ps flags.
302 local EXTRA_UNIX_FLAGS="-o pid,args"
303 # pattern to use for peeling off the process numbers.
304 local pid_finder_pattern='s/^[[:space:]]*\([0-9][0-9]*\).*$/\1/p'
307 /bin/ps $EXTRA_DOZER_FLAGS $EXTRA_UNIX_FLAGS $user_flag | tail -n +2 >$PID_DUMP
309 #echo got all this stuff in the pid dump file:
313 # search for the pattern the user wants to find, and just pluck the process
314 # ids out of the results.
316 for i in "${patterns[@]}"; do
317 #echo "pattern curr is '$i'"
318 PIDS_SOUGHT+=($(cat $PID_DUMP \
320 | grep -v "$excluder" \
321 | sed -n -e "$pid_finder_pattern"))
324 #echo pids sought list became:
325 #echo "${PIDS_SOUGHT[@]}"
328 if [ ${#PIDS_SOUGHT[*]} -ne 0 ]; then
329 local PIDS_SOUGHT2=$(printf -- '%s\n' ${PIDS_SOUGHT[@]} | sort | uniq)
331 PIDS_SOUGHT=${PIDS_SOUGHT2[*]}
332 echo ${PIDS_SOUGHT[*]}
337 # finds all processes matching the pattern specified and shows their full
338 # process listing (whereas psfind just lists process ids).
341 echo "psa finds processes by pattern, but there was no pattern on the command line."
344 local -a patterns=("${@}")
345 p=$(psfind "${patterns[@]}")
351 if [ "${patterns[0]}" == "-u" ]; then
352 # void the two elements with that user flag so we don't use them as patterns.
353 unset patterns[0] patterns[1]=
357 echo "Processes matching ${patterns[@]}..."
359 if [ -n "$IS_DARWIN" ]; then
362 # only print the header the first time.
363 if [ -z "$fuzil_sentinel" ]; then
366 ps $i -w -u | sed -e '1d'
371 # cases besides mac os x's darwin.
372 if [ "$OS" == "Windows_NT" ]; then
373 # special case for windows.
376 ps -W -p $curr | tail -n +2
379 # normal OSes can handle a nice simple query.
387 #hmmm: holy crowbars, this is an old one. do we ever still have any need of it?
388 # an unfortunately similarly named function to the above 'ps' as in process
389 # methods, but this 'ps' stands for postscript. this takes a postscript file
390 # and converts it into pcl3 printer language and then ships it to the printer.
391 # this mostly makes sense for an environment where one's default printer is
392 # pcl. if the input postscript causes ghostscript to bomb out, there has been
393 # some good success running ps2ps on the input file and using the cleaned
394 # postscript file for printing.
395 function ps2pcl2lpr() {
397 gs -sDEVICE=pcl3 -sOutputFile=- -sPAPERSIZE=letter "$i" | lpr -l
403 #hmmm: ugly absolute path here.
405 restore_terminal_title
408 # switches from a /X/path form to an X:/ form. this also processes cygwin paths.
409 function unix_to_dos_path() {
410 # we usually remove dos slashes in favor of forward slashes.
412 if [[ ! "$OS" =~ ^[Ww][iI][nN] ]]; then
413 # fake this value for non-windows (non-cygwin) platforms.
416 # for cygwin, we must replace the /home/X path with an absolute one, since cygwin
417 # insists on the /home form instead of /c/cygwin/home being possible. this is
418 # super frustrating and nightmarish.
419 DOSSYHOME="$(cygpath -am "$HOME")"
422 if [ ! -z "$SERIOUS_SLASH_TREATMENT" ]; then
423 # unless this flag is set, in which case we force dos slashes.
424 echo "$1" | sed -e "s?^$HOME?$DOSSYHOME?g" | sed -e 's/\\/\//g' | sed -e 's/\/cygdrive//' | sed -e 's/\/\([a-zA-Z]\)\/\(.*\)/\1:\/\2/' | sed -e 's/\//\\/g'
426 echo "$1" | sed -e "s?^$HOME?$DOSSYHOME?g" | sed -e 's/\\/\//g' | sed -e 's/\/cygdrive//' | sed -e 's/\/\([a-zA-Z]\)\/\(.*\)/\1:\/\2/'
430 # # switches from an X:/ form to a /cygdrive/X/path form. this is only useful
431 # # for the cygwin environment currently.
432 # function dos_to_unix_path() {
433 # # we always remove dos slashes in favor of forward slashes.
434 ##old: echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/\1\/\2/'
435 # echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/cygdrive\/\1\/\2/'
438 # returns a successful value (0) if this system is debian or ubuntu.
439 function debian_like() {
440 # decide if we think this is debian or ubuntu or a variant.
441 DEBIAN_LIKE=$(if [ ! -z "$(grep -i debian /etc/issue)" \
442 -o ! -z "$(grep -i ubuntu /etc/issue)" ]; then echo 1; else echo 0; fi)
443 if [ $DEBIAN_LIKE -eq 1 ]; then
444 # success; this is debianish.
447 # this seems like some other OS.
452 # this function wraps the normal sudo by ensuring we replace the terminal
453 # label before we launch what they're passing to sudo. we also preserve
454 # specific variables that enable the main user's ssh credentials to still
455 # be relied on for ssh forwarding, even if the '-i' flag is passed to cause
456 # a fresh shell (which normally doesn't get the launching user's environment
461 # hoist our X authorization info in case environment is passed along;
462 # this can allow root to use our display to show X.org windows.
463 if [ -z "$IMPORTED_XAUTH" -a ! -z "$DISPLAY" ]; then
464 export IMPORTED_XAUTH="$(xauth list $DISPLAY | head -n 1 | awk '{print $3}')"
465 local REMOVE_IMP_XAUTH=true
468 # launch sudo with just the variables we want to reach the other side.
470 varmods+="OLD_HOME=$HOME "
471 if [ ! -z "$IMPORTED_XAUTH" ]; then varmods+="IMPORTED_XAUTH=$IMPORTED_XAUTH "; fi
472 if [ ! -z "$SSH_AUTH_SOCK" ]; then varmods+="SSH_AUTH_SOCK=$SSH_AUTH_SOCK "; fi
473 /usr/bin/sudo $varmods "$@"
476 # take the xauth info away again if it wasn't set already.
477 if [ ! -z "$REMOVE_IMP_XAUTH" ]; then
480 restore_terminal_title
484 # trashes the .#blah files that cvs and subversion leave behind when finding conflicts.
485 # this kind of assumes you've already checked them for any salient facts.
486 function clean_cvs_junk() {
488 find $i -follow -type f -iname ".#*" -exec perl $FEISTY_MEOW_SCRIPTS/files/safedel.pl {} ";"
492 # overlay for nechung binary so that we can complain less grossly about it when it's missing.
494 local wheres_nechung=$(whichable nechung)
495 if [ -z "$wheres_nechung" ]; then
496 echo "The nechung oracle program cannot be found. You may want to consider"
497 echo "rebuilding the feisty meow applications with this command:"
498 echo "bash $FEISTY_MEOW_SCRIPTS/generator/produce_feisty_meow.sh"
505 # recreates all the generated files that the feisty meow scripts use.
506 function regenerate() {
507 # do the bootstrapping process again.
509 echo "regenerating feisty meow script environment."
510 bash $FEISTY_MEOW_SCRIPTS/core/reconfigure_feisty_meow.sh
512 # force a full reload by turning off sentinel variables and methods.
513 unset -v CORE_VARIABLES_LOADED FEISTY_MEOW_LOADING_DOCK USER_CUSTOMIZATIONS_LOADED \
515 unalias CORE_ALIASES_LOADED &>/dev/null
516 unset -f function_sentinel
518 # reuse the original path if we can.
519 if [ ! -z "$FEISTY_MEOW_ORIGINAL_PATH" ]; then
520 export PATH="$FEISTY_MEOW_ORIGINAL_PATH"
523 # reload feisty meow environment in current shell.
524 log_feisty_meow_event "reloading the feisty meow scripts for $USER in current shell."
525 source "$FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh"
526 # run nechung oracle to give user a new fortune.
528 restore_terminal_title
531 # merges a set of custom scripts into the feisty meow environment. can be
532 # passed a name to use as the custom scripts source folder (found on path
533 # $FEISTY_MEOW_SCRIPTS/customize/{name}), or it will try to guess the name
534 # by using the login name.
535 function recustomize()
537 local custom_user="$1"; shift
538 if [ -z "$custom_user" ]; then
539 # default to login name if there was no name provided.
540 custom_user="$(fm_username)"
541 # we do intend to use the login name here to get the login name and to ignore
542 # if the user has sudo root access; we don't want to provide a custom
545 # chop off any email address style formatting to leave just the name.
546 custom_user="$(echo "$custom_user" | cut -f1 -d'@')"
550 if [ ! -d "$FEISTY_MEOW_SCRIPTS/customize/$custom_user" ]; then
551 echo -e "the customization folder for '$custom_user' is missing:
553 $FEISTY_MEOW_SCRIPTS/customize/$custom_user
555 we will skip recustomization, but these other customizations are available:
557 # a little tr and sed magic to fix the carriage returns into commas.
558 local line="$(find $FEISTY_MEOW_SCRIPTS/customize -mindepth 1 -maxdepth 1 -type d -exec basename {} ';' | tr '\n' '&' | sed 's/&/, /g' | sed -e 's/, $//')"
559 # make the line feeds and carriage returns manageable with tr.
560 # convert the ampersand, our weird replacement for EOL, with a comma + space in sed.
561 # last touch with sed removes the last comma.
566 # recreate the feisty meow loading dock.
567 regenerate >/dev/null
569 # jump into the loading dock and make our custom link.
570 pushd "$FEISTY_MEOW_LOADING_DOCK" &>/dev/null
571 if [ -h custom ]; then
572 # there's an existing link, so remove it.
575 # make sure we cleaned up the area before we re-link.
576 if [ -h custom -o -d custom -o -f custom ]; then
578 Due to an over-abundance of caution, we are not going to remove an unexpected
579 'custom' object found in the file system. This object is located in the
580 feisty meow loading dock here: $(pwd)
581 And here is a description of the rogue 'custom' object:
585 If you are pretty sure that this is just a remnant of an older approach in
586 feisty meow, where we copied the custom directory rather than linking it
587 (and it most likely is just such a bit of cruft of that nature), then please
588 remove that old remnant 'custom' item, for example by saying:
589 /bin/rm -rf \"custom\" ; popd
590 Sorry for the interruption, but we want to make sure this removal wasn't
591 automatic if there is even a small amount of doubt about the issue."
595 # create the custom folder as a link to the customizations.
596 ln -s "$FEISTY_MEOW_SCRIPTS/customize/$custom_user" custom
600 # now take into account all the customizations by regenerating the feisty meow environment.
603 restore_terminal_title
606 # generates a random password where the first parameter is the number of characters
607 # in the password (default 20) and the second parameter specifies whether to use
608 # special characters (1) or not (0).
609 # found function at http://legroom.net/2010/05/06/bash-random-password-generator
610 function random_password()
612 [ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
613 cat /dev/urandom | tr -cd "$CHAR" | head -c ${1:-32}
617 function add_cygwin_drive_mounts() {
618 for i in c d e f g h q z ; do
619 #hmmm: improve this by not adding the link if already there, or if the drive is not valid.
620 ln -s /cygdrive/$i $i
624 ############################
626 # takes a file to modify, and then it will replace any occurrences of the
627 # pattern provided as the second parameter with the text in the third
629 function replace_pattern_in_file()
631 local file="$1"; shift
632 local pattern="$1"; shift
633 local replacement="$1"; shift
634 if [ -z "$file" -o -z "$pattern" -o -z "$replacement" ]; then
635 echo "replace_pattern_in_file: needs a filename, a pattern to replace, and the"
636 echo "text to replace that pattern with."
639 sed -i -e "s%$pattern%$replacement%g" "$file"
642 # similar to replace_pattern_in_file, but also will add the new value
643 # when the old one did not already exist in the file.
644 function replace_if_exists_or_add()
646 local file="$1"; shift
647 local phrase="$1"; shift
648 local replacement="$1"; shift
649 if [ -z "$file" -o ! -f "$file" -o -z "$phrase" -o -z "$replacement" ]; then
650 echo "replace_if_exists_or_add: needs a filename, a phrase to replace, and the"
651 echo "text to replace that phrase with."
654 grep "$phrase" "$file" >/dev/null
655 # replace if the phrase is there, otherwise add it.
656 if [ $? -eq 0 ]; then
657 replace_pattern_in_file "$file" "$phrase" "$replacement"
659 # this had better be the complete line.
660 echo "$replacement" >>"$file"
664 ############################
666 # finds a variable (first parameter) in a particular property file
667 # (second parameter). the expected format for the file is:
669 function seek_variable()
671 local find_var="$1"; shift
672 local file="$1"; shift
673 if [ -z "$find_var" -o -z "$file" -o ! -f "$file" ]; then
674 echo -e "seek_variable: needs two parameters, firstly a variable name, and\nsecondly a file where the variable's value will be sought." 1>&2
679 if [ ${#line} -eq 0 ]; then continue; fi
680 # split the line into the variable name and value.
681 IFS='=' read -a assignment <<< "$line"
682 local var="${assignment[0]}"
683 local value="${assignment[1]}"
684 if [ "${value:0:1}" == '"' ]; then
685 # assume the entry was in quotes and remove them.
686 value="${value:1:$((${#value} - 2))}"
688 if [ "$find_var" == "$var" ]; then
694 # finds a variable (first parameter) in a particular XML format file
695 # (second parameter). the expected format for the file is:
696 # ... name="varX" value="valueX" ...
697 function seek_variable_in_xml()
699 local find_var="$1"; shift
700 local file="$1"; shift
701 if [ -z "$find_var" -o -z "$file" -o ! -f "$file" ]; then
702 echo "seek_variable_in_xml: needs two parameters, firstly a variable name, and"
703 echo "secondly an XML file where the variable's value will be sought."
708 if [ ${#line} -eq 0 ]; then continue; fi
709 # process the line to make it more conventional looking.
710 line="$(echo "$line" | sed -e 's/.*name="\([^"]*\)" value="\([^"]*\)"/\1=\2/')"
711 # split the line into the variable name and value.
712 IFS='=' read -a assignment <<< "$line"
713 local var="${assignment[0]}"
714 local value="${assignment[1]}"
715 if [ "${value:0:1}" == '"' ]; then
716 # assume the entry was in quotes and remove them.
717 value="${value:1:$((${#value} - 2))}"
719 if [ "$find_var" == "$var" ]; then
725 ############################
727 # goes to a particular directory passed as parameter 1, and then removes all
728 # the parameters after that from that directory.
729 function push_whack_pop()
731 local dir="$1"; shift
732 pushd "$dir" &>/dev/null
733 if [ $? -ne 0 ]; then echo failed to enter dir--quitting.; fi
734 rm -rf $* &>/dev/null
735 if [ $? -ne 0 ]; then echo received a failure code when removing.; fi
741 # new breed of definer functions goes here. still in progress.
743 # defines an alias and remembers that this is a new or modified definition.
744 # if the feisty meow codebase is unloaded, then so are all the aliases that
746 function define_yeti_alias()
748 # if alias exists already, save old value for restore,
749 # otherwise save null value for restore,
750 # have to handle unaliasing if there was no prior value of one
752 # add alias name to a list of feisty defined aliases.
754 #hmmm: first implem, just do the alias and get that working...
763 #hmmm: this points to an extended functions file being needed; not all of these are core.
765 # displays documentation in "md" formatted files.
768 local file="$1"; shift
769 pandoc "$file" | lynx -stdin
774 # just shows a separator line for an 80 column console, or uses the first
775 # parameter as the number of columns to expect.
779 if [ -z "$count" ]; then
780 count=$(($COLUMNS - 1))
784 for ((i=0; i < $count; i++)); do
790 # alias for separator.
798 # count the number of sub-directories in a directory and echo the result.
799 function count_directories()
801 local subbydir="$1"; shift
802 numdirs="$(find "$subbydir" -mindepth 1 -maxdepth 1 -type d | wc -l)"
806 # takes a string and capitalizes just the first character. any capital letters in the remainder of
807 # the string are made lower case. the processed string is returned by an echo.
808 function capitalize_first_char()
810 local to_dromedary="$1"; shift
811 to_dromedary="$(tr '[:lower:]' '[:upper:]' <<< ${to_dromedary:0:1})$(tr '[:upper:]' '[:lower:]' <<< ${to_dromedary:1})"
815 # given a source path and a target path, this will make a symbolic link from
816 # the source to the destination, but only if the source actually exists.
817 function make_safe_link()
819 local src="$1"; shift
820 local target="$1"; shift
822 if [ -d "$src" ]; then
823 ln -s "$src" "$target"
824 exit_on_error "Creating symlink from '$src' to '$target'"
826 echo "Created symlink from '$src' to '$target'."
829 # pretty prints the json files provided as parameters.
830 function clean_json()
832 if [ -z "$*" ]; then return; fi
835 local file="$1"; shift
836 if [ -z "$file" ]; then break; fi
837 if [ ! -f "$file" ]; then "echo File '$file' does not exist."; continue; fi
838 temp_out="$TMP/$file.view"
839 cat "$file" | python -m json.tool > "$temp_out"
840 show_list+=($temp_out)
841 continue_on_error "pretty printing '$file'"
843 filedump "${show_list[@]}"
849 # only print our special headers or text fields.
853 grep -i "\"text\":\|^=.*" |
854 sed -e "s/\\\\r/$CR/g" -e "s/\\\\n/\\$LF/g"
859 # echoes the machine's hostname. can be used like so:
860 # local my_host=$(get_hostname)
861 function get_hostname()
863 # there used to be more variation in how to do this, but adopting mingw
864 # and cygwin tools really helped out.
865 local this_host=unknown
866 if [ "$OS" == "Windows_NT" ]; then
867 this_host=$(hostname)
868 elif [ ! -z "$(echo $MACHTYPE | grep apple)" ]; then
869 this_host=$(hostname)
870 elif [ ! -z "$(echo $MACHTYPE | grep suse)" ]; then
871 this_host=$(hostname --long)
872 elif [ -x "$(whichable hostname)" ]; then
873 this_host=$(hostname)
878 # makes sure that the provided "folder" is a directory and is writable.
879 function test_writeable()
881 local folder="$1"; shift
882 if [ ! -d "$folder" -o ! -w "$folder" ]; then return 1; fi
888 # given a filename and a string to seek and a number of lines, then this
889 # function will remove the first occurrence of a line in the file that
890 # matches the string, and it will also axe the next N lines as specified.
891 function create_chomped_copy_of_file()
893 local filename="$1"; shift
894 local seeker="$1"; shift
895 local numlines=$1; shift
897 #echo into create_chomped_copy...
898 #var filename seeker numlines
900 # make a backup first, oy.
901 \cp -f "$filename" "/tmp/$(basename ${filename}).bkup-${RANDOM}"
902 exit_on_error "backing up file: $filename"
904 # make a temp file to write to before we move file into place in bind.
905 local new_version="/tmp/$(basename ${filename}).bkup-${RANDOM}"
906 \rm -f "$new_version"
907 exit_on_error "cleaning out new version of file from: $new_version"
913 # don't bother looking at the lines if we're already in skip mode.
914 if [[ $skip_count == 0 ]]; then
915 # find the string they're seeking.
916 if [[ ! "$line" =~ .*${seeker}.* ]]; then
918 echo "$line" >> "$new_version"
920 # a match! start skipping. we will delete this line and the next N lines.
922 #echo first skip count is now $skip_count
926 # we're already skipping. let's keep going until we hit the limit.
928 #echo ongoing skip count is now $skip_count
929 if (( $skip_count > $numlines )); then
930 echo "Done skipping, and back to writing output file."
936 #echo file we created looks like this:
939 if [ ! -z "$found_any" ]; then
940 # put the file back into place under the original name.
941 \mv "$new_version" "$filename"
942 exit_on_error "moving the new version into place in: $filename"
944 # cannot always be considered an error, but we can at least gripe.
945 echo "Did not find any matches for seeker '$seeker' in file: $filename"
951 # space 'em all: fixes naming for all of the files of the appropriate types
952 # in the directories specified. we skip any file with a dot in front, to
953 # respect their hidden nature. currently the set of files we'll rename is
954 # very boutique; it's in this function, and just happens to be the types of
955 # files we work with a lot.
956 function spacemall() {
957 local -a dirs=("${@}")
958 if [ ${#dirs[@]} -eq 0 ]; then
962 local charnfile="$(mktemp $TMP/zz_charn.XXXXXX)"
963 #hmmm: any way to do the below more nicely or reusably?
964 #hmmm: yes! a variable with a list of files that are considered TEXT_FILE_EXTENSIONS or something like that.
965 #hmmm: yes continued! also a variable for BINARY_FILE_EXTENSIONS to avoid those, where we need to in other scripts.
966 #hmmm: wait, we actually have a mix here, since this is a renaming function and not a searching function; get it straight!
967 #hmmm: would the composition of those two types of extensions cover all the files i want to rename? they have to be "important".
968 find "${dirs[@]}" -follow -maxdepth 1 -mindepth 1 -type f -and -not -iname ".[a-zA-Z0-9]*" | \
970 "csv\|doc\|docx\|eml\|html\|ics\|jpeg\|jpg\|m4a\|mov\|mp3\|odp\|ods\|odt\|pdf\|png\|ppt\|pptx\|rtf\|txt\|vsd\|vsdx\|wav\|xls\|xlsx\|xml\|zip" | \
971 sed -e 's/^/"/' | sed -e 's/$/"/' | \
972 xargs bash "$FEISTY_MEOW_SCRIPTS/files/spacem.sh"
973 # drop the temp file now that we're done.
979 # tty relevant functions...
981 # keep_awake: sends a message to the screen from the background.
982 function keep_awake()
984 # just starts the keep_awake process in the background.
985 bash $FEISTY_MEOW_SCRIPTS/tty/keep_awake_process.sh &
986 # this should leave the job running as %1 or a higher number if there
987 # are pre-existing background jobs.
992 # site avenger functions...
996 THISDIR="$FEISTY_MEOW_SCRIPTS/site_avenger"
997 source "$FEISTY_MEOW_SCRIPTS/site_avenger/shared_site_mgr.sh"
1003 # you have hit the borderline functional zone...
1005 #hmmm: not really doing anything yet; ubuntu seems to have changed from pulseaudio in 17.04?
1006 # restarts the sound driver.
1007 function fix_sound_driver() {
1008 # stop bash complaining about blank function body.
1011 # sudo service alsasound restart
1012 #elif pulse something
1013 # sudo pulseaudio -k
1014 # sudo pulseaudio -D
1016 # something else...?
1021 # ...and here's the end of the borderline functional zone.
1025 # NOTE: no more function definitions are allowed after this point.
1027 function function_sentinel()
1032 if [ ! -z "$DEBUG_FEISTY_MEOW" ]; then echo "feisty meow function definitions done."; fi
1036 # test code for set_var_if_undefined.
1038 if [ $run_test != 0 ]; then
1039 echo running tests on set_var_if_undefined.
1041 set_var_if_undefined flagrant forknordle
1042 exit_on_error "testing if defined variable would be whacked"
1043 if [ $flagrant != petunia ]; then
1044 echo set_var_if_undefined failed to leave the test variable alone
1047 unset bobblehead_stomper
1048 set_var_if_undefined bobblehead_stomper endurance
1049 if [ $bobblehead_stomper != endurance ]; then
1050 echo set_var_if_undefined failed to set a variable that was not defined yet