Commands using xargs (769)

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Another Matrix Style Implementation
A bit different from some of the other submissions. Has bold and uses all c printable characters. Change the bs=value to speed up and increase the sizes of the bold and non-bold strings.

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

command shell generate random strong password
shell generate random strong password

Generate soothing noise
Substitute 'brown' with 'pink' or 'white' according to your taste. I put this on my headphones when I'm working in an "open concept" office, where there are always three to five conversations going in earshot, or if I'm working somewhere it is "rude" of me to tell a person to turn off their cubicle radio.

a find and replace within text-based files, for batch text replacement, not using perl
Use sed to edit in-place a list of files returned by find.

lazy SQL QUERYING
alias for psql command line; works similar for Oracles sqlplus commandline interface. if you do not provide stdin you will end up in the db shell.

Change Random Wallpaper on Gnome 3
Change Random Wallpaper on Gnome 3

Trace a DNS query from root to the authoritive servers.
Simple command to trace a DNS query from the root all the way to the authoritative servers.

Renaming a file without overwiting an existing file name
Sometimes in a hurry you may move or copy a file using an already existent file name. If you aliased the cp and mv command with the -i option you are prompted for a confirmation before overwriting but if your aliases aren't there you will loose the target file! The -b option will force the mv command to check if the destination file already exists and if it is already there a backup copy with an ending ~ is created.

Convert a string to


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