All commands

replace (any number of) space[s] with underscore.

from http://git-scm.com/book/en/Git-Tools-Stashing

Useful for when stash cannot be applied to current branch

This saves Subversion's log output as XML and then runs an XQuery over it. This is standard XQuery 1.0 and should therefore also work with other XQuery processors. I have tested it with Zorba (http://www.zorba-xquery.com). XQilla (http://xqilla.sourceforge.net) also does it, but you'd have to save the query to a file and then execute "xqilla filename.xq".

The query first finds all distinct authors and then, for each author, sums up the number of paths they have changed in each commit. This accounts for commits of multiple changes at once.

The indenting space in all lines from the second one seems to be due to a bug in Zorba.

To replace foo by bar, but not execute, do ^foo^bar^:p

To replace all foo by bar, but not execute, do ^foo^bar^:&:p

This command line creates a new user with home directory, using the command "useradd". The command "mkpasswd" lets you encrypt the password e.g. with SHA-512 method. This line ensures that your password is written encrypted in /etc/shadow" so you can log in with the new user.

The Pomodoro Technique is a time management method developed by Francesco Cirillo in the late 1980s. The technique uses a timer to break down periods of work into 25-minute intervals called 'Pomodori' (from the Italian word for 'tomatoes') separated by short breaks.

You need to prepare a short .wav file (the "ring.wav" in the sample command line). This command will trigger aplay to play ring.wav 25 minutes from now on, which can be used as a poor man's pomodoro timer.

zsh: add leading zero ... altogether pointless, as there can only be a maximum of 10 'single digit' files, and so a maximum of 10 files the command can act on. Padding further zeros will produce '0010', '001' and so break sequance. The only proper method is to itterate the numbers like so:

i=1; for f (*) zmv $f '${(l:3::0:)$((++i))}'.txt

but this has the unfortunate side effect of incrementing the values by 1 ... which may not be desirable.

calculate if "$1" is a number ... decimals included :)

example of using zsh extended globbing

zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100

Requires zsh. You might also do the following:

for (*.txt) mv $i ${i/.txt/.csv}

or I imagine the following will work in bash:

for i in "*.txt" ; do mv $i ${i/.txt/.csv} ; done

zsh example using a 'for' loop and arithmetic expression:

files matching the pattern '*.jpg' are renamed with a 3 digit prefix, keeping the previous filename and suffix.

also could specify port number:

lsof -ni TCP:80

The 'sample output' shows the file(s) found and the line at which '' was found (for the example I used the 'string'.)

Simple way to test if a port is available to the public. Run this command on the "server" and run a `telnet host-ip port-number` on the client. Test by sending strings to the server, which will be displayed in the server terminal.

Interesting to see which packages are larger than the kernel package.

Useful to understand which RPMs might be candidates to remove if drive space is restricted.

This command is more robust because it handles spaces, newlines and control characters in filenames. It uses printf, not ls, to determine file size.

my name's lisa

Clear the screen and list file

Find top 5 big files

Add an "alert" alias for long running commands