+++ /dev/null
-#!/bin/bash
-
-#
-# these great examples of handy unix tidbits were donated by "q. black".
-#
-
-# list a directory tree
-ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/ /' -e 's/-/|/'
-
-# list directory sizes (biggest first)
-du -h $(du -s * |sort -nr|awk '{print $2}')
-
-# this will sort a date field of the form: DD-MON-YYYY HH:MM:SS
-sort +0.7 -1 +0.3M -0.6 +0 -0.2 +1
-
-# this will sort a date field of the form: MON DD HH:MM:SS YYYY
-sort +3 -4 +0M +1n
-
-# this will sort a date field of the form: MON DD HH:MM:SS
-sort +0M +1n
-
-# this will sort a date field of the form: Date: Tue Feb 3 09:17:58 EST 2004
-sort +6 -7 +2M +3n +4
-
-# display all lines from a certain line onward
-start_line=132
-|awk "{if (NR >= ${start_line}){print \$0}}"
-
-# display all lines after a token
-sed '1,/CUT HERE/d'
-
-# print the first and last lines
-sed -n '1,1p;$,$p'
-
-# signal bash about a window size change
-kill -winch $$
-
-# show the date 1 year, 2 months and 3 days ago
-date -v -1y -v -2m -v -3d
-
-# set the date back 1 year
-sudo date $(date -v -1y +%Y%m%d%H%M)
-
-# output the standard date format for setting the time
-# get the date
-date -u +%Y%m%d%H%M.%S
-# set the date
-date -u (cut and paste from above)
-
-# convert one date format to another (output is in the current time zone)
-old_date="Aug 27 15:24:33 2005 GMT"
-new_date=$(date -j -f "%b %e %T %Y %Z" "${old_date}" +%D)
-echo ${new_date}
-# returns "08/27/05"
-
-# output the modification time of a file in different format
-file=
-date -j -f "%b %e %T %Y" "$(ls -lT ${file} |awk '{print $6,$7,$8,$9}')"
-
-# output the number of days until a certain date
-target_date="Sep 2 15:20:20 2005 GMT"
-target_seconds=$(date -j -f "%b %e %T %Y" +%s "${target_date}" 2>/dev/null)
-diff_seconds=$(expr ${target_seconds} - $(date +%s))
-diff_days=$(expr ${diff_seconds} / 86400)
-echo "${diff_days} day(s)"
-
-# these commands can be used to fill in missing times in a "uniq -c" count
-# of times.
-# output 24 hours in one minute increments
-for h in $(jot -w %02d - 0 23 1); do
- for m in $(jot -w %02d - 0 59 1); do
- echo " 0 ${h}:${m}"
- done
-done
-# sort them together, and remove any 0 counts if an count already exists
-sort +1 +0rn out1 out2 |uniq -f 1
-
-# output with w3m to get basic html word wrap
-w3m -T "text/html" -dump -cols 72 <<EOF
- <p>
- This test verifies basic networking and that the ${product_short_name}
- can reach it's default gateway.
-EOF
-
-# another way to format text for output
-fmt 72 <<EOF
-This test verifies basic networking and that the ${product_short_name}
-can reach it's default gateway.
-EOF
-
-# smtpcrypt "printf"
-{
-char *jkwbuf = NULL;
-asprintf(&jkwbuf, "JKW: msg->used = %ld\n", msg->used);
-BIO_write(sc->log, jkwbuf, strlen(jkwbuf)+1);
-free(jkwbuf);
-}
-
-# rolling diff of a list of files (diff a & b, then b & c,...)
-last=
-for i in $(ls -1rt); do
- if [ ! -z "${last}" ]; then
- diff -u ${last} ${i}
- fi
- last=${i}
-done
-
-# clearing and restoring chflags
-file=
-old_chflags=$(ls -lo ${file}|awk '{print $5}')
-chflags 0 ${file}
-# do whatever
-if [ ."${old_chflags}" != ."-" ]; then
- chflags ${old_chflags} ${file}
-fi
-
-# way to do standard edits to files
-file=
-{
- # append line(s) after a line, "i" to insert before
- echo '/www_recovery/a'
- echo 'mithril ALL = (root) NOPASSWD: /usr/local/libexec/destroyer'
- echo '.'
- # modify a line
- echo 'g/^xntpd_program=/s,^xntpd_program=.*$,xntpd_program="ntpd",'
- # delete a line
- echo 'g/^controls key secret =/d'
- echo 'x!'
-} | ex - ${file}
-
-# how to search for errors in the last 24 hours
-# note that this command does not work quite right. The sort is off early
-# in the year because the dates do not have the year.
-# Also sed never sees the /CUT HERE/ when it is the first line.
-(echo "$(date -v-24H "+%b %e %H:%M:%S") --CUT HERE--"; \
- zgrep -h "cookie" /var/log/messages*)|sort +0M| \
- sed '1,/CUT HERE/d'
-# This version fixes those problems. It adds the file year to the date
-# and puts a marker at the start of the list.
-(echo "$(date -j -f "%s" 0 "+%Y %b %e %H:%M:%S") --ALWAYS FIRST--"; \
- echo "$(date -v-24H "+%Y %b %e %H:%M:%S") --CUT HERE--"; \
- for i in /var/log/messages*; do
- year=$(ls -lT ${i}|awk '{print $9}')
- zgrep -h "cookie" ${i}|while read line; do
- echo "${year} ${line}"
- done
- done)|sort +0n +1M| sed '1,/CUT HERE/d'
-
-# process a list of quoted values
-{
- # It tends to be easiest to use a 'here-document' to feed in the list.
- # I prefer to have the list at the start instead of the end
- cat <<EOF
- 'general' 'network node0' 'private address'
- 'general' 'options node2' 'kern securelevel'
-EOF
-}| while read line; do
- eval set -- ${line}
- config=$1; shift
- section=$1; shift
- key=$1; shift
-
- echo "confutil value \"${config}\" \"${section}\" \"${key}\""
-done
-
-# Method to read lines with a "for" loop, without spawning a subshell
-NEWLINE='
-'
-OIFS="${IFS}"
-IFS="${NEWLINE}"
-for line in $(cat /etc/passwd | sort -r); do
- IFS="${OIFS}"
-
- # do whatever you want here
- echo "line = ${line}"
-
- IFS="${NEWLINE}"
-done
-IFS="${OIFS}"
-
-# generate a histogram of characters in a file
-cat file|
- awk '{for (i=1; i <= length($0); i++) {printf("%s\n",substr($0,i,1))}}'|
- sort|uniq -c
-
-# show line lengths for a file
-cat file| awk '{print length($0)}'| sort -n
-
-
-
-
-# get the modification time of a directory or file and then reset the time.
-target=/usr/local/etc/pkdb
-save_date=$(ls -ldT ${target}|awk '{print $6,$7,$8,$9}')
-save_date=$(date -j -f "%b %e %T %Y" "${save_date}" +"%Y%m%d%H%M.%S")
-# later
-touch -t ${save_date} ${target}
-
-
-# detect NULL bytes in a file
-file=
-hexdump -e '"%_u\n"' ${file}|grep -q '^nul$'
-if [ $? -eq 0 ]; then
-else
-fi
-
-
-# calculate average
-cd /tmp
-uudecode
-begin 644 bc.average
-M<V-A;&4],PIT;W1A;#TP"F-O=6YT/3`*=VAI;&4@*#$I('L*("`@(&YU;2`]
-M(')E860H*0H@("`@:68@*&YU;2`]/2`P*2!B<F5A:SL*("`@(&-O=6YT*RL*
-M("`@('1O=&%L("L](&YU;0I]"B)T;W1A;"`]("([('1O=&%L"B)C;W5N="`]
-K("([(&-O=6YT"B)A=F5R86=E(#T@(CL@=&]T86P@+R!C;W5N=`IQ=6ET"@``
-`
-end
-(cat data; echo "0") |bc -q bc.average
-
-
projects / feisty_meow.git / blobdiff