All commands (14,187)
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On CentOS at least, date returns a boolean for the common date string formats, including YYYY-MM-DD. In the sample output, you can see various invalid dates returning 0 whereas a simple regex check would return 1 for the invalid dates. -d, --date=STRING display time described by STRING, not `now' The version of date on OS X does not appear to have this same option. Show Sample Output
0if date -d 2006-10-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi -
Monitors the current directory for changes to HAML files and converts them to HTML. Show Sample Output
0while true; do filechanged=$(inotifywait -e close_write,moved_to --format "%w%f" .); haml $filechanged -q --no-escape-attrs > ${filechanged/.haml/.html}; done -
Use less random number resources and less commands
0head -c 24 /dev/urandom | base64 -
shows you the symlinks in the current directory, recursively, but without following them Show Sample Output
0find ./ -type l -print0 | xargs -0 ls -plah -
0puppet config print modulepath
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us lsof, grep for any pid matching a given name such as "node". Show Sample Output
0lsof -i -n -P | grep -e "$(ps aux | grep node | grep -v grep | awk -F' ' '{print $2}' | xargs | awk -F' ' '{str = $1; for(i = 2; i < NF; i++) {str = str "\\|" $i} print str}')" -
It's quite fun to invert text using "flip.pl" (ref: http://ubuntuforums.org/showthread.php?t=2078323 ). Slightly more challenging is to flip a whole "cowsay". :-) Show Sample Output
0echo Which way up? | flip.pl | cowsay | tac | sed -e "s,/,+,g" -e "s,\\\,/,g" -e "s,+,\\\,g" -e "s,_,-,g" -e "s,\^,v,g" -
0mogrify -resize 25% *.jpg
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0watch -n 5 "asterisk -rx 'core show calls' | grep active"
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I needed to find a command to delete huge numbers of files without intensive cpu load, that command does the job :) The purpose of "+" at then end of the line, tells rm to delete multiple files at once
0find <path> -type f -exec ionice -c3 rm {} + -
0AWS_DEFAULT_REGION="sa-east-1" jungle ec2 ls | grep midas | sort | cut -f4 | xargs -I {} ssh ubuntu@{} sudo apt-get install ntp -y
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Fix for PHP Shell Exec: ffmpeg -i input.mp4 -f null /dev/null 2>&1 shell_exec("ffmpeg -i input.mp4 -f null /dev/null 2>&1"); Show Sample Output
0ffmpeg -i input.mp4 -f null /dev/null -
The Windows Subsystem for Linux (WSL) is a compatibility layer for running binary Linux executables natively in Windows. A folder such as "C:\Program Files (x86)\Common Files" is represented as "/mnt/c/Program Files (x86)/Common Files". This function allows you to change the current directory to a Windows folder. Show Sample Output
0function _cd() { local dir; dir="$(sed -e 's~\([a-z]\):~/mnt/\L\1~gi' <<< "${*//'\'/"/"}" )"; if [ -d "$dir" ]; then cd "$dir" || exit; fi; } -
One can test their python regex matching using this shell function. for e.g.
rgx_match "translate\s*\(([0-9-.]+),([0-9-.]+)\)" "translate(162.11517,76.817357)"('162.11517', '76.817357')0rgx_match() { python -c "import re; print re.search('$1','$2').groups()"; } -
0ls -ld *(/)
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Perform a dns zone transfer (if is allowed on target dns server) and print result.
0host -la domain.com -
0mencoder -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1000:vhq -oac mp3lame -lameopts br=98 -o output.wmv input.mpg
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for example:
echo "..1234567." | cut -c $(range 3 7)yields12345670range () { end=$(echo "$1 + $2 - 1" | bc); echo "$1-$end"; } -
omit "> ~/Desktop/MyAppList`date +%s.txt`" if you don't want to print it to a file on your desktop and instead only want to display to console created and tested on: ProductName: Mac OS X ProductVersion: 10.6.3 BuildVersion: 10D573 Show Sample Output
0find ~/Music/iTunes/iTunes\ Media/. -name \*.ipa -exec basename {} \; | cut -d \. -f 1 > ~/Desktop/MyAppList`date +%s.txt` -
0find * ! -name abc -type f -delete
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find the files locked by rcs utility Show Sample Output
0find /path/to/folder/ -mindepth 1 -maxdepth 2 -name "*,v" -exec sudo rlog -L -R {} \; -
whereis (1) - locate the binary, source, and manual page files for a command Not actually better, just expanded a bit. The "whereis" command has the following output: whereis gcc gcc: /usr/bin/gcc /usr/lib/gcc /usr/bin/X11/gcc /usr/share/man/man1/gcc.1.gz therefore the 'ls' error on first line, which could be eliminated with a little extra work. Show Sample Output
0ls -l `whereis gcc` -
0sudo dmidecode -s system-product-name
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This probably only works without modifications in RHEL/CentOS/Fedora. Show Sample Output
0sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n -
Ssh to your co-worker's box and watch them go crazy when the cd player ejects Show Sample Output
0while true; do eject && sleep `expr $RANDOM % 5` && eject -t; done; - ‹ First < 442 443 444 445 446 > Last ›
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