Commands by homoludens (7)

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Display last exit status of a command
The variable ? contain the last exit status of a command, it can be printed for troubleshooting purpose.

cleanup /tmp directory
Cleans all files in /tmp that have been accessed at least 2 days ago.

determine if tcp port is open
for udp nmap -sU -p 80 hostname

Mount proc
Run this in / in a chroot to get your own proc there.

List all files in current dir and subdirs sorted by size
or $ tree -ifsF --noreport .|sort -n -k2|grep -v '/$' (rows presenting directory names become hidden)

Transcode .flac to .wav with gstreamer
Takes all .flac directories, feeds them into a simple transcode pipeline to spit out .wavs with the same name (but correct extension).

Sorted list of established destination connections
no need grep. its redundant when awk is present.

Create a false directory structure for testing your commands
This will make a false directory with the same file names as whatever directory you choose. This is wise to use when testing scripts that alter contents, filenames, or move files. I wrote this after an OOPS I made when renaming a directory of JPGs, PNGs, PSDs that were mixed. I recommend this as I lost over 2000 vacation pictures and some graphics I designed for software and web sites. :( NOTE: This only creates name copies, that data itself is not copied.

UPS Tracking Script

Cleanup firefox's database.
Sqlite database keeps collecting cruft as time passes, which can be cleaned by the 'vacuum;' command. This command cleans up the cruft in all sqlite files relating to the user you have logged in as. This command has to be run when firefox is not running, or it will exit displaying the pid of the firefox running.


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