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Find the package that installed a command

Detect encoding of a text file
This command gives you the charset of a text file, which would be handy if you have no idea of the encoding.

List only the directories
-d: list directory entries instead of contents, and do not dereference symbolic links

IBM AIX: Extract a .tar.gz archive in one shot

Your GeoIP location on Google Maps

display emerge.log date in a human friendly way
gentoo only or gentoo-like linux distributions.

runs a bash script in debugging mode

ls not pattern
I've been looking for a way to do this for a while, get a not pattern for shell globs. This works, I'm using to grab logs from a remote server via scp.

Backup files older than 1 day on /home/dir, gzip them, moving old file to a dated file.
Useful for backing up old files, custom logs, etc. via a cronjob.

connects to db2 database instance/alias "stgndv2" user "pmserver" using password "xxxxxxx"
db2 => ? connect CONNECT [USER username [{USING password [NEW new-password CONFIRM confirm-password] | CHANGE PASSWORD}]] CONNECT RESET CONNECT TO database-alias [IN {SHARE MODE | EXCLUSIVE MODE [ON SINGLE DBPARTITIONNUM]}] [USER username [{USING password [NEW new-password CONFIRM confirm-password] | CHANGE PASSWORD}]]


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