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 # makes a directory of the name specified and then tries to change the
37 # current directory to that directory.
39 if [ ! -d "$1" ]; then mkdir -p "$1"; fi
43 # returns true if the variable is an array.
45 [[ "$(declare -p $1)" =~ "declare -a" ]]
48 # returns true if the name provided is a defined alias.
54 # makes the status of pipe number N (passed as first parameter) into the
55 # main return value (i.e., the value for $?). this is super handy to avoid
56 # repeating the awkward looking code below in multiple places.
57 function promote_pipe_return()
59 ( exit ${PIPESTATUS[$1]} )
64 function fm_username()
66 # see if we can get the user name from the login name. oddly this sometimes doesn't work.
67 local custom_user="$(logname 2>/dev/null)"
68 if [ -z "$custom_user" ]; then
69 # try the normal unix user variable.
72 if [ -z "$custom_user" ]; then
73 # try the windows user variable.
74 custom_user="$USERNAME"
81 # displays the value of a variable in bash friendly format.
86 local varname="$1"; shift
87 if [ -z "$varname" ]; then
91 if is_alias "$varname"; then
92 #echo found $varname is alias
93 local tmpfile="$(mktemp $TMP/aliasout.XXXXXX)"
94 alias $varname | sed -e 's/.*=//' >$tmpfile
95 echo "alias $varname=$(cat $tmpfile)"
97 elif [ -z "${!varname}" ]; then
98 echo "$varname undefined"
100 if is_array "$varname"; then
101 #echo found $varname is array var
103 eval temparray="(\${$varname[@]})"
104 echo "$varname=(${temparray[@]})"
105 #hmmm: would be nice to print above with elements enclosed in quotes, so that we can properly
106 # see ones that have spaces in them.
108 #echo found $varname is simple
109 echo "$varname=${!varname}"
118 # when passed a list of things, this will return the unique items from that list as an echo.
121 # do the uniquification: split the space separated items into separate lines, then
122 # sort the list, then run the uniq tool on the list. results will be packed back onto
123 # one line when invoked like: local fredlist="$(uniquify a b c e d a e f a e d b)"
124 echo $* | tr ' ' '\n' | sort | uniq
127 # sets the variable in parameter 1 to the value in parameter 2, but only if
128 # that variable was undefined.
129 function set_var_if_undefined()
131 local var_name="$1"; shift
132 local var_value="$1"; shift
133 if [ -z "${!var_name}" ]; then
134 eval export $var_name="$var_value"
140 function success_sound()
142 if [ ! -z "$CLAM_FINISH_SOUND" ]; then
143 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_FINISH_SOUND"
147 function error_sound()
149 if [ ! -z "$CLAM_ERROR_SOUND" ]; then
150 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_ERROR_SOUND"
156 # echoes the maximum number of columns that the terminal supports. usually
157 # anything you print to the terminal with length less than (but not equal to)
158 # maxcols will never wrap.
159 function get_maxcols()
161 # calculate the number of columsn in the terminal.
162 local cols=$(stty size | awk '{print $2}')
168 # checks the result of the last command that was run, and if that failed,
169 # then this complains and exits from bash. the function parameters are
170 # used as the message to print as a complaint.
171 function exit_on_error()
173 if [ $? -ne 0 ]; then
174 echo -e "\n\nan important action failed and this script will stop:\n\n$*\n\n*** Exiting script..."
180 # like exit_on_error, but will keep going after complaining.
181 function continue_on_error()
183 if [ $? -ne 0 ]; then
184 echo -e "\n\na problem occurred, but we can continue:\n\n$*\n\n=> Continuing script..."
191 # accepts any number of arguments and outputs them to the feisty meow event log.
192 function log_feisty_meow_event()
194 echo -e "$(date_stringer) -- ${USER}@$(hostname): $*" >> "$FEISTY_MEOW_EVENT_LOG"
199 # wraps secure shell with some parameters we like, most importantly to enable X forwarding.
203 # we remember the old terminal title, then force the TERM variable to a more generic
204 # version for the other side (just 'linux'); we don't want the remote side still
205 # thinking it's running xterm.
208 #hmmm: why were we doing this? it scorches the user's logged in session, leaving it without proper terminal handling.
209 # # we save the value of TERM; we don't want to leave the user's terminal
210 # # brain dead once we come back from this function.
211 # local oldterm="$TERM"
214 /usr/bin/ssh -X -C "${args[@]}"
216 # # restore the terminal variable also.
219 restore_terminal_title
220 if [ ! -z "$DEBUG_FEISTY_MEOW" ]; then
221 echo TERM title restored to prior value
227 # locates a process given a search pattern to match in the process list.
228 # supports a single command line flag style parameter of "-u USERNAME";
229 # if the -u flag is found, a username is expected afterwards, and only the
230 # processes of that user are considered.
232 local -a patterns=("${@}")
234 #echo patterns list is: "${patterns[@]}"
238 if [ "${patterns[0]}" == "-u" ]; then
239 user_flag="-u ${patterns[1]}"
240 #echo "found a -u parm and user=${patterns[1]}"
241 # void the two elements with that user flag so we don't use them as patterns.
242 unset patterns[0] patterns[1]=
248 local PID_DUMP="$(mktemp "$TMP/zz_pidlist.XXXXXX")"
251 if [ "$OS" == "Windows_NT" ]; then
252 # gets cygwin's (god awful) ps to show windoze processes also.
253 local EXTRA_DOZER_FLAGS="-W"
254 # pattern to use for peeling off the process numbers.
255 local pid_finder_pattern='s/ *\([0-9][0-9]*\) *.*$/\1/p'
258 # flags which clean up the process listing output on unixes.
259 # apparently cygwin doesn't count as a type of unix, because their
260 # crummy specialized ps command doesn't support normal ps flags.
261 local EXTRA_UNIX_FLAGS="-o pid,args"
262 # pattern to use for peeling off the process numbers.
263 local pid_finder_pattern='s/^[[:space:]]*\([0-9][0-9]*\).*$/\1/p'
266 /bin/ps $EXTRA_DOZER_FLAGS $EXTRA_UNIX_FLAGS $user_flag | tail -n +2 >$PID_DUMP
268 #echo got all this stuff in the pid dump file:
272 # search for the pattern the user wants to find, and just pluck the process
273 # ids out of the results.
275 for i in "${patterns[@]}"; do
276 PIDS_SOUGHT+=($(cat $PID_DUMP \
278 | sed -n -e "$pid_finder_pattern"))
281 #echo pids sought list became:
282 #echo "${PIDS_SOUGHT[@]}"
285 if [ ${#PIDS_SOUGHT[*]} -ne 0 ]; then
286 local PIDS_SOUGHT2=$(printf -- '%s\n' ${PIDS_SOUGHT[@]} | sort | uniq)
288 PIDS_SOUGHT=${PIDS_SOUGHT2[*]}
289 echo ${PIDS_SOUGHT[*]}
294 # finds all processes matching the pattern specified and shows their full
295 # process listing (whereas psfind just lists process ids).
298 echo "psa finds processes by pattern, but there was no pattern on the command line."
301 local -a patterns=("${@}")
302 p=$(psfind "${patterns[@]}")
308 if [ "${patterns[0]}" == "-u" ]; then
309 # void the two elements with that user flag so we don't use them as patterns.
310 unset patterns[0] patterns[1]=
314 echo "Processes matching ${patterns[@]}..."
316 if [ -n "$IS_DARWIN" ]; then
319 # only print the header the first time.
320 if [ -z "$fuzil_sentinel" ]; then
323 ps $i -w -u | sed -e '1d'
328 # cases besides mac os x's darwin.
329 if [ "$OS" == "Windows_NT" ]; then
330 # special case for windows.
333 ps -W -p $curr | tail -n +2
336 # normal OSes can handle a nice simple query.
344 #hmmm: holy crowbars, this is an old one. do we ever still have any need of it?
345 # an unfortunately similarly named function to the above 'ps' as in process
346 # methods, but this 'ps' stands for postscript. this takes a postscript file
347 # and converts it into pcl3 printer language and then ships it to the printer.
348 # this mostly makes sense for an environment where one's default printer is
349 # pcl. if the input postscript causes ghostscript to bomb out, there has been
350 # some good success running ps2ps on the input file and using the cleaned
351 # postscript file for printing.
352 function ps2pcl2lpr() {
354 gs -sDEVICE=pcl3 -sOutputFile=- -sPAPERSIZE=letter "$i" | lpr -l
358 #hmmm: not really doing anything yet; ubuntu seems to have changed from pulseaudio in 17.04?
359 # restarts the sound driver.
360 function fix_sound_driver() {
361 # stop bash complaining about blank function body.
364 # sudo service alsasound restart
365 #elif pulse something
376 #hmmm: ugly absolute path here.
378 restore_terminal_title
381 # switches from a /X/path form to an X:/ form. this also processes cygwin paths.
382 function unix_to_dos_path() {
383 # we usually remove dos slashes in favor of forward slashes.
385 if [[ ! "$OS" =~ ^[Ww][iI][nN] ]]; then
386 # fake this value for non-windows (non-cygwin) platforms.
389 # for cygwin, we must replace the /home/X path with an absolute one, since cygwin
390 # insists on the /home form instead of /c/cygwin/home being possible. this is
391 # super frustrating and nightmarish.
392 DOSSYHOME="$(cygpath -am "$HOME")"
395 if [ ! -z "$SERIOUS_SLASH_TREATMENT" ]; then
396 # unless this flag is set, in which case we force dos slashes.
397 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'
399 echo "$1" | sed -e "s?^$HOME?$DOSSYHOME?g" | sed -e 's/\\/\//g' | sed -e 's/\/cygdrive//' | sed -e 's/\/\([a-zA-Z]\)\/\(.*\)/\1:\/\2/'
403 # switches from an X:/ form to a /cygdrive/X/path form. this is only useful
404 # for the cygwin environment currently.
405 function dos_to_unix_path() {
406 # we always remove dos slashes in favor of forward slashes.
407 #old: echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/\1\/\2/'
408 echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/cygdrive\/\1\/\2/'
411 # returns a successful value (0) if this system is debian or ubuntu.
412 function debian_like() {
413 # decide if we think this is debian or ubuntu or a variant.
414 DEBIAN_LIKE=$(if [ ! -z "$(grep -i debian /etc/issue)" \
415 -o ! -z "$(grep -i ubuntu /etc/issue)" ]; then echo 1; else echo 0; fi)
416 if [ $DEBIAN_LIKE -eq 1 ]; then
417 # success; this is debianish.
420 # this seems like some other OS.
425 # su function: makes su perform a login.
426 # for some OSes, this transfers the X authority information to the new login.
429 # debian currently requires the full version which imports X authority
430 # information for su.
432 # get the x authority info for our current user.
433 source "$FEISTY_MEOW_SCRIPTS/security/get_x_auth.sh"
435 if [ -z "$X_auth_info" ]; then
436 # if there's no authentication info to pass along, we just do a normal su.
439 # under X, we update the new login's authority info with the previous
441 (unset XAUTHORITY; /bin/su -l $* -c "$X_auth_info ; export DISPLAY=$DISPLAY ; bash")
444 # non-debian supposedly doesn't need the extra overhead any more.
445 # or at least suse doesn't, which is the other one we've tested on.
450 # sudo function wraps the normal sudo by ensuring we replace the terminal
451 # label if they're doing an su with the sudo.
456 restore_terminal_title
457 # if [ "$first_command" == "su" ]; then
458 # # yep, they were doing an su, but they're back now.
459 # label_terminal_with_info
464 # trashes the .#blah files that cvs and subversion leave behind when finding conflicts.
465 # this kind of assumes you've already checked them for any salient facts.
466 function clean_cvs_junk() {
468 find $i -follow -type f -iname ".#*" -exec perl $FEISTY_MEOW_SCRIPTS/files/safedel.pl {} ";"
472 # overlay for nechung binary so that we can complain less grossly about it when it's missing.
474 local wheres_nechung=$(which nechung 2>/dev/null)
475 if [ -z "$wheres_nechung" ]; then
476 echo "The nechung oracle program cannot be found. You may want to consider"
477 echo "rebuilding the feisty meow applications with this command:"
478 echo "bash $FEISTY_MEOW_SCRIPTS/generator/produce_feisty_meow.sh"
485 # recreates all the generated files that the feisty meow scripts use.
486 function regenerate() {
487 # do the bootstrapping process again.
489 echo "regenerating feisty meow script environment."
490 bash $FEISTY_MEOW_SCRIPTS/core/reconfigure_feisty_meow.sh
492 # force a full reload by turning off sentinel variables and methods.
493 unset -v CORE_VARIABLES_LOADED FEISTY_MEOW_LOADING_DOCK USER_CUSTOMIZATIONS_LOADED
494 unalias CORE_ALIASES_LOADED &>/dev/null
495 unset -f function_sentinel
496 # reload feisty meow environment in current shell.
497 log_feisty_meow_event "reloading the feisty meow scripts for $USER in current shell."
498 source "$FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh"
499 # run nechung oracle to give user a new fortune.
501 restore_terminal_title
504 # merges a set of custom scripts into the feisty meow environment. can be
505 # passed a name to use as the custom scripts source folder (found on path
506 # $FEISTY_MEOW_SCRIPTS/customize/{name}), or it will try to guess the name
507 # by using the login name.
508 function recustomize()
510 local custom_user="$1"; shift
511 if [ -z "$custom_user" ]; then
512 # default to login name if there was no name provided.
513 custom_user="$(fm_username)"
514 # we do intend to use the login name here to get the login name and to ignore
515 # if the user has sudo root access; we don't want to provide a custom
521 if [ ! -d "$FEISTY_MEOW_SCRIPTS/customize/$custom_user" ]; then
522 echo -e "the customization folder for '$custom_user' is missing:
524 $FEISTY_MEOW_SCRIPTS/customize/$custom_user
526 we will skip recustomization, but these other customizations are available:
528 # a little tr and sed magic to fix the carriage returns into commas.
529 local line="$(find $FEISTY_MEOW_SCRIPTS/customize -mindepth 1 -maxdepth 1 -type d -exec basename {} ';' | tr '\n' '&' | sed 's/&/, /g' | sed -e 's/, $//')"
530 # make the line feeds and carriage returns manageable with tr.
531 # convert the ampersand, our weird replacement for EOL, with a comma + space in sed.
532 # last touch with sed removes the last comma.
537 # recreate the feisty meow loading dock.
538 regenerate >/dev/null
540 # jump into the loading dock and make our custom link.
541 pushd "$FEISTY_MEOW_LOADING_DOCK" &>/dev/null
542 if [ -h custom ]; then
543 # there's an existing link, so remove it.
546 # make sure we cleaned up the area before we re-link.
547 if [ -h custom -o -d custom -o -f custom ]; then
549 Due to an over-abundance of caution, we are not going to remove an unexpected
550 'custom' object found in the file system. This object is located in the
551 feisty meow loading dock here: $(pwd)
552 And here is a description of the rogue 'custom' object:
556 If you are pretty sure that this is just a remnant of an older approach in
557 feisty meow, where we copied the custom directory rather than linking it
558 (and it most likely is just such a bit of cruft of that nature), then please
559 remove that old remnant 'custom' item, for example by saying:
560 /bin/rm -rf \"custom\" ; popd
561 Sorry for the interruption, but we want to make sure this removal wasn't
562 automatic if there is even a small amount of doubt about the issue."
566 # create the custom folder as a link to the customizations.
567 ln -s "$FEISTY_MEOW_SCRIPTS/customize/$custom_user" custom
571 # now take into account all the customizations by regenerating the feisty meow environment.
574 restore_terminal_title
577 # generates a random password where the first parameter is the number of characters
578 # in the password (default 20) and the second parameter specifies whether to use
579 # special characters (1) or not (0).
580 # found function at http://legroom.net/2010/05/06/bash-random-password-generator
581 function random_password()
583 [ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
584 cat /dev/urandom | tr -cd "$CHAR" | head -c ${1:-32}
588 # a wrapper for the which command that finds items on the path. some OSes
589 # do not provide which, so we want to not be spewing errors when that
594 which which &>/dev/null
595 if [ $? -ne 0 ]; then
596 # there is no which command here. we produce nothing due to this.
599 echo $(which $to_find)
602 function add_cygwin_drive_mounts() {
603 for i in c d e f g h q z ; do
604 #hmmm: improve this by not adding the link if already there, or if the drive is not valid.
605 ln -s /cygdrive/$i $i
609 ############################
611 # takes a file to modify, and then it will replace any occurrences of the
612 # pattern provided as the second parameter with the text in the third
614 function replace_pattern_in_file()
616 local file="$1"; shift
617 local pattern="$1"; shift
618 local replacement="$1"; shift
619 if [ -z "$file" -o -z "$pattern" -o -z "$replacement" ]; then
620 echo "replace_pattern_in_file: needs a filename, a pattern to replace, and the"
621 echo "text to replace that pattern with."
624 sed -i -e "s%$pattern%$replacement%g" "$file"
627 # similar to replace_pattern_in_file, but also will add the new value
628 # when the old one did not already exist in the file.
629 function replace_if_exists_or_add()
631 local file="$1"; shift
632 local phrase="$1"; shift
633 local replacement="$1"; shift
634 if [ -z "$file" -o ! -f "$file" -o -z "$phrase" -o -z "$replacement" ]; then
635 echo "replace_if_exists_or_add: needs a filename, a phrase to replace, and the"
636 echo "text to replace that phrase with."
639 grep "$phrase" "$file" >/dev/null
640 # replace if the phrase is there, otherwise add it.
641 if [ $? -eq 0 ]; then
642 replace_pattern_in_file "$file" "$phrase" "$replacement"
644 # this had better be the complete line.
645 echo "$replacement" >>"$file"
649 ############################
651 # finds a variable (first parameter) in a particular property file
652 # (second parameter). the expected format for the file is:
654 function seek_variable()
656 local find_var="$1"; shift
657 local file="$1"; shift
658 if [ -z "$find_var" -o -z "$file" -o ! -f "$file" ]; then
659 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
664 if [ ${#line} -eq 0 ]; then continue; fi
665 # split the line into the variable name and value.
666 IFS='=' read -a assignment <<< "$line"
667 local var="${assignment[0]}"
668 local value="${assignment[1]}"
669 if [ "${value:0:1}" == '"' ]; then
670 # assume the entry was in quotes and remove them.
671 value="${value:1:$((${#value} - 2))}"
673 if [ "$find_var" == "$var" ]; then
679 # finds a variable (first parameter) in a particular XML format file
680 # (second parameter). the expected format for the file is:
681 # ... name="varX" value="valueX" ...
682 function seek_variable_in_xml()
684 local find_var="$1"; shift
685 local file="$1"; shift
686 if [ -z "$find_var" -o -z "$file" -o ! -f "$file" ]; then
687 echo "seek_variable_in_xml: needs two parameters, firstly a variable name, and"
688 echo "secondly an XML file where the variable's value will be sought."
693 if [ ${#line} -eq 0 ]; then continue; fi
694 # process the line to make it more conventional looking.
695 line="$(echo "$line" | sed -e 's/.*name="\([^"]*\)" value="\([^"]*\)"/\1=\2/')"
696 # split the line into the variable name and value.
697 IFS='=' read -a assignment <<< "$line"
698 local var="${assignment[0]}"
699 local value="${assignment[1]}"
700 if [ "${value:0:1}" == '"' ]; then
701 # assume the entry was in quotes and remove them.
702 value="${value:1:$((${#value} - 2))}"
704 if [ "$find_var" == "$var" ]; then
710 ############################
712 # goes to a particular directory passed as parameter 1, and then removes all
713 # the parameters after that from that directory.
714 function push_whack_pop()
716 local dir="$1"; shift
717 pushd "$dir" &>/dev/null
718 if [ $? -ne 0 ]; then echo failed to enter dir--quitting.; fi
719 rm -rf $* &>/dev/null
720 if [ $? -ne 0 ]; then echo received a failure code when removing.; fi
726 # new breed of definer functions goes here. still in progress.
728 # defines an alias and remembers that this is a new or modified definition.
729 # if the feisty meow codebase is unloaded, then so are all the aliases that
731 function define_yeti_alias()
733 # if alias exists already, save old value for restore,
734 # otherwise save null value for restore,
735 # have to handle unaliasing if there was no prior value of one
737 # add alias name to a list of feisty defined aliases.
739 #hmmm: first implem, just do the alias and get that working...
748 #hmmm: this points to an extended functions file being needed; not all of these are core.
750 # displays documentation in "md" formatted files.
753 local file="$1"; shift
754 pandoc "$file" | lynx -stdin
759 # just shows a separator line for an 80 column console, or uses the first
760 # parameter as the number of columns to expect.
764 if [ -z "$count" ]; then
769 for ((i=0; i < $count - 1; i++)); do
775 # alias for separator.
783 # count the number of sub-directories in a directory and echo the result.
784 function count_directories()
786 local subbydir="$1"; shift
787 numdirs="$(find "$subbydir" -mindepth 1 -maxdepth 1 -type d | wc -l)"
791 # takes a string and capitalizes just the first character. any capital letters in the remainder of
792 # the string are made lower case. the processed string is returned by an echo.
793 function capitalize_first_char()
795 local to_dromedary="$1"; shift
796 to_dromedary="$(tr '[:lower:]' '[:upper:]' <<< ${to_dromedary:0:1})$(tr '[:upper:]' '[:lower:]' <<< ${to_dromedary:1})"
800 # given a source path and a target path, this will make a symbolic link from
801 # the source to the destination, but only if the source actually exists.
802 function make_safe_link()
804 local src="$1"; shift
805 local target="$1"; shift
807 if [ -d "$src" ]; then
808 ln -s "$src" "$target"
809 exit_on_error "Creating symlink from '$src' to '$target'"
811 echo "Created symlink from '$src' to '$target'."
814 # pretty prints the json files provided as parameters.
815 function clean_json()
817 if [ -z "$*" ]; then return; fi
820 local file="$1"; shift
821 if [ -z "$file" ]; then break; fi
822 if [ ! -f "$file" ]; then "echo File '$file' does not exist."; continue; fi
823 temp_out="$TMP/$file.view"
824 cat "$file" | python -m json.tool > "$temp_out"
825 show_list+=($temp_out)
826 continue_on_error "pretty printing '$file'"
828 filedump "${show_list[@]}"
834 # only print our special headers or text fields.
838 grep -i "\"text\":\|^=.*" |
839 sed -e "s/\\\\r/$CR/g" -e "s/\\\\n/\\$LF/g"
844 # echoes the machine's hostname. can be used like so:
845 # local my_host=$(get_hostname)
846 function get_hostname()
848 # there used to be more variation in how to do this, but adopting mingw
849 # and cygwin tools really helped out.
850 local this_host=unknown
851 if [ "$OS" == "Windows_NT" ]; then
852 this_host=$(hostname)
853 elif [ ! -z "$(echo $MACHTYPE | grep apple)" ]; then
854 this_host=$(hostname)
855 elif [ ! -z "$(echo $MACHTYPE | grep suse)" ]; then
856 this_host=$(hostname --long)
857 elif [ -x "$(which hostname 2>/dev/null)" ]; then
858 this_host=$(hostname)
863 # makes sure that the provided "folder" is a directory and is writable.
864 function test_writeable()
866 local folder="$1"; shift
867 if [ ! -d "$folder" -o ! -w "$folder" ]; then return 1; fi
873 # given a filename and a string to seek and a number of lines, then this
874 # function will remove the first occurrence of a line in the file that
875 # matches the string, and it will also axe the next N lines as specified.
876 function create_chomped_copy_of_file()
878 local filename="$1"; shift
879 local seeker="$1"; shift
880 local numlines=$1; shift
882 #echo into create_chomped_copy...
883 #var filename seeker numlines
885 # make a backup first, oy.
886 \cp -f "$filename" "/tmp/$(basename ${filename}).bkup-${RANDOM}"
887 exit_on_error "backing up file: $filename"
889 # make a temp file to write to before we move file into place in bind.
890 local new_version="/tmp/$(basename ${filename}).bkup-${RANDOM}"
891 \rm -f "$new_version"
892 exit_on_error "cleaning out new version of file from: $new_version"
898 # don't bother looking at the lines if we're already in skip mode.
899 if [[ $skip_count == 0 ]]; then
900 # find the string they're seeking.
901 if [[ ! "$line" =~ .*${seeker}.* ]]; then
903 echo "$line" >> "$new_version"
905 # a match! start skipping. we will delete this line and the next N lines.
907 #echo first skip count is now $skip_count
911 # we're already skipping. let's keep going until we hit the limit.
913 #echo ongoing skip count is now $skip_count
914 if (( $skip_count > $numlines )); then
915 echo "Done skipping, and back to writing output file."
921 #echo file we created looks like this:
924 if [ ! -z "$found_any" ]; then
925 # put the file back into place under the original name.
926 \mv "$new_version" "$filename"
927 exit_on_error "moving the new version into place in: $filename"
929 # cannot always be considered an error, but we can at least gripe.
930 echo "Did not find any matches for seeker '$seeker' in file: $filename"
936 # space 'em all: fixes naming for all of the files of the appropriate types
937 # in the directories specified.
938 function spacemall() {
939 local -a dirs=("${@}")
940 if [ ${#dirs[@]} -eq 0 ]; then
944 local charnfile="$(mktemp $TMP/zz_charn.XXXXXX)"
945 find "${dirs[@]}" -follow -maxdepth 1 -mindepth 1 -type f | \
947 "docx\|eml\|html\|jpeg\|jpg\|m4a\|mov\|mp3\|ods\|odt\|pdf\|png\|pptx\|txt\|xlsx\|zip" | \
948 sed -e 's/^/"/' | sed -e 's/$/"/' | \
949 xargs bash "$FEISTY_MEOW_SCRIPTS/files/spacem.sh"
950 # drop the temp file now that we're done.
956 # site avenger aliases
959 THISDIR="$FEISTY_MEOW_SCRIPTS/site_avenger"
960 source "$FEISTY_MEOW_SCRIPTS/site_avenger/shared_site_mgr.sh"
966 # NOTE: no more function definitions are allowed after this point.
968 function function_sentinel()
973 if [ ! -z "$DEBUG_FEISTY_MEOW" ]; then echo "feisty meow function definitions done."; fi
977 # test code for set_var_if_undefined.
979 if [ $run_test != 0 ]; then
980 echo running tests on set_var_if_undefined.
982 set_var_if_undefined flagrant forknordle
983 exit_on_error "testing if defined variable would be whacked"
984 if [ $flagrant != petunia ]; then
985 echo set_var_if_undefined failed to leave the test variable alone
988 unset bobblehead_stomper
989 set_var_if_undefined bobblehead_stomper endurance
990 if [ $bobblehead_stomper != endurance ]; then
991 echo set_var_if_undefined failed to set a variable that was not defined yet