A useful way to generate the MD5 hash for a string by command line Show Sample Output

This command creates tar zip of a directory and its sub-directories. Show Sample Output

This function is used to sort selected lines of a text file to the end of that file. Especially useful in cases where human intervention is necessary to sort out parts of a file. Let's say that you have a text file which contains the words rough slimy red fluff dough For whatever reason, you want to sort all words rhyming with 'tough' to the bottom of the file, and all words denoting colors to the top, while keeping the order of the rest of the file intact. '$EDITOR' will open, showing all of the lines in the given file, numbered with '0' padding. Adding a '~' to the beginning of the line will cause the line to sort to the end of the file, adding '!' will cause it to sort to the beginning. Show Sample Output

setting gdb with this option / breakpoint before running the process will cause it to break whenever an memory allocation operation is not kosher.

Computes total size of files in a directory. This value is different "du -b" because doesn't includes directory sizes. Show Sample Output

Use shopt -s cdspell to correct the typos in the cd command Show Sample Output

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client: nc localhost 9876

get subversion diff output without distracting whitespace changes. good for when you are cleaning up code to make sure you didn't change anything important. also useful when working with old code, or someone else's code.

Fixes the faulty files with perl, which may exist on more platforms

To show your current resolution on your desktop Show Sample Output

This command will place your card into monitor mode. Gets around the "ioctl(SIOCSIWMODE) failed: Device or resource busy" error encountered when running airodump-ng. Show Sample Output

If you have ever edited a locally checked out version of a file to tweak it for testing purposes, and came back to it over a weekend, you might have forgotten what you exactly changed. This command helps you see the differences between the the checked in SVN version, and the one you tweaked. Show Sample Output

This pattern matches empty lines in the file and -c gives the count

Actually this is a shorter version that fits the 255 chars limit of this resource. The full version shows status in the right top corner: alias mpdd='while sleep 1; do _r=$(awk '\''BEGIN{FS=": "}/^Artist:/{r=r""$2};/^Title:/{r=r" - "$2};/^time:/{r=$2" "r};/^state: play/{f=1}END{if(f==1){print r}}'\'' <(mpc status;mpc currentsong));_l=${#_r};[ $_l -eq 0 ] && continue;[ -z "$_p" ] && _p=$_l;echo -ne "\e[s\e[0;${_p}H\e[K\e[u";_p=$((COLUMNS - _l));echo -ne "\e[s\e[0;${_p}H\e[K\e[0;44m\e[1;33m${_r}\e[0m\e[u";done &' mpc is defined like this: function mpc() { echo "$*" | nc 192.168.1.1 6600 } Show Sample Output