Commands by husmanahmed (1)

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Create a bunch of dummy text files
Avoiding a for loop brought this time down to less than 3 seconds on my old machine. And just to be clear, 33554432 = 8192 * 4086.

Sets shell timeout
Useful in root's .profile - will auto-logout after TMOUT seconds of inactivity. Close after `seconds` inactive. export TMOUT=seconds (unefunge)

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Output a list of svn repository entities to xml file
I use this to pull the last commit date for everything in my repo, so I can tell the client which files haven't been touched or updated since the repo was created. Another way to do it is to use svn log, but that does not pull the "kind" attribute. It does, however, give you the commit message. Both are very useful.

Execute a command at a given time
This is an alternative to cron which allows a one-off task to be scheduled for a certain time.

Calculate days on which Friday the 13th occurs
I removed the dependency of the English language

urldecoding with one pure BASH builtin
You can use ordinary printf to convert "%23%21%2fbin%2fbash" into "#!/bin/bash" with no external utilities, by using a little known printf feature -- the "%b" specifier converts shell escapes. Replace % with \x and printf will understand the urlencoded string. BASH's printf has an extension to set a variable directly, too. So you get to convert urlencoded strings from garble to plaintext in one step with no externals and no backticks.

Get a list of ssh servers on the local subnet
Scan the local network for servers who have the ssh port open.

Lists installed kernels
no need for rpm, no need for piping to another command. also no real fu but lacking in unnecessary complexity and distro specific commands.

List all installed Debian packages
Should work on all systems that use dpkg and APT package management.


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