wraps text lines at the specified width (90 here). -s option is to force to wrap on blank characters -b count bytes instead of columns

sorts the contents of a file without the need for a second file to take the sorted output. This was previously entered as `sort -g list.txt -o $_` but as others have pointed out the $_ references the previous command. so this would've worked had that been the second part of a command joined with && like: cat list.txt && sort -g list.txt -o $_ The user below me Robin had the most correct command. Show Sample Output

Usage: lower [STRING]... Show Sample Output

Usage: upper [STRING]... Show Sample Output

If you just want to write or append some text to a file without having to run a text editor, run this command. After running the command, start typing away. To exit, type . on a line by itself. Replacing the >> with a single > will let you overwrite your file. Show Sample Output

Reads stdin, and outputs each line only once - without sorting ahead of time. This does use more memory than your system's sort utility.

random(6) - random lines from a file or random numbers

Used this command recently to remove the trailing ?> from all the files in a php project, which has having some unnecessary whitespace issues. Obviously, change *.php to whatever you'd like.

Randomizes a file. The opposite of sort is sort -R!

Faster then other method using wget For obtain all commands use nu=`curl http://www.commandlinefu.com/commands/browse |grep -o "Terminal - All commands -.*results$" | grep -oE "[[:digit:],]{4,}" | sed 's/,//'`; curl http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/[0-"$nu":25] | grep -vE "_curl_|\.com by David" > clf-ALL.txt For more version specific nu=`curl http://www.commandlinefu.com/commands/browse |grep -o "Terminal - All commands -.*results$" | grep -oE "[[:digit:],]{4,}" | sed 's/,//'`; curl http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/[0-"$nu":25] | grep -vE "_curl_|\.com by David" > clf-ALL_"$nu".txt Also download dirctly from my dropbox My drop box invitaion link is http://db.tt/sRdJWvQq . Use it and get free 2.5 GB space. Show Sample Output

These re the best option combination that works fine for compressing my database dumps. It's possible that there are another option or value that might improve the compression ratio, by these are the ones that worked, the syntax for 7zr it's a little messy...

Display some text on the wallpaper especially warning messages

This is not printing, real editing using the text editor.

List all text files in the current directory.

The sort utility is well used, but sometimes you want a little chaos. This will randomize the lines of a text file. BTW, on OS X there is no | sort -R option! There is also no | shuf These are only in the newer GNU core... This is also faster than the alternate of: | awk 'BEGIN { srand() } { print rand() "\t" $0 }' | sort -n | cut -f2- Show Sample Output

print the lines of a file in randomized order Show Sample Output

- View non printable characters. - view binary files Show Sample Output

Remove duplicate line in a text file.

by default, will output the whole line on which 'word' has been found

Good for use in your ~/.bash_profile or a script. Show Sample Output