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Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

detach remote console for long running operations
Starts midnightcommander and allows you to detach the console; use ctrl-\ to detach Then at a later time you can reconnect using $ dtach -a /tmp/wires-mc In my experience dtach works much better for programs like irssi, mutt, mc, aptitude than screen does.

Send a local file via email
Another way of sending an attachment. -s : subject file : file to be sent

"Clone" a list of installed packages from one Debian/Ubuntu Server to another

A function to find the newest file in a directory
Works recusivley in the specified dir or '.' if none given. Repeatedly calls 'find' to find a newer file, when no newer files exist you have the newest. In this case 'newest' means most recently modified. To find the most recently created change -newer to -cnewer.

find files in a date range
Example above will recursively find files in current directory created/modified in 2010.

Prepend text to a file

download and unpack tarball without leaving it sitting on your hard drive

List users with running processes
This is different that `who` in that who only cares about logged-in users running shells, this command will show all daemon users and what not; also users logged in remotely via SSH but are running SFTP/SCP only and not a shell.

Scan a gz file for non-printable characters and display each line number and line that contains them.
Scans the file once to build a list of line numbers that contain non-printable characters Scans the file again, passing those line numbers to sed as two commands to print the line number and the line itself. Also passes the output through a tr to replace the characters with a ?


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