Vim automatic system clipboard

set guioptions+=a

SVN add project

svn import . path/to/repository

Make Matlab writable by pipes

mkfifo matin

Matpipe:
#!/bin/bash
((tail -f ~/matin | tee >(cat 1>&2)) & cat) | matlab

Writemat
#!/bin/bash
cat $@ | tee ~/matin

Vim function
vmap :call ExecuteMatlab()
function! ExecuteMatlab() range
:'<,'>!writemat
endfunction


Then pipe commands to matin.

This prints stuff sent to matin to the stdin of matlab and also to stderr, as well as able to read from the stdin of the terminal.

Keyword: process substitution - >(....) creates a temporary file in bash and feeds stuff to that process.

Save wrong line bash

A simple thing to do when you realize you just typed the wrong line is hit Ctrl+C; if you want to keep the line, but need to execute something else first, begin a new line with a back slash - \, then Ctrl+C. The line will remain in your history.

Latex Dashes

Hyphen: daughter-in-law, X-rated\\
En dash: pages 13--67\\
Em dash: yes---or no? \\
Minus sign: $0$, $1$ and $-1$

Bash trim filename

However, buried in there is a section on Parameter Substitution which tells us that $foo is really a shorthand for ${foo} which is really the simplest case of several ${foo:operators} and similar constructs.

Given:
foo=/tmp/my.dir/filename.tar.gz

We can use these expressions:

path = ${foo%/*}

To get: /tmp/my.dir (like dirname)

file = ${foo##*/}

To get: filename.tar.gz (like basename)

base = ${file%%.*}

To get: filename

ext = ${file#*.}

To get: tar.gz



${variable%pattern}
Trim the shortest match from the end
${variable##pattern}
Trim the longest match from the beginning
${variable%%pattern}
Trim the longest match from the end
${variable#pattern}
Trim the shortest match from the beginning

Beep frequency

xset b vol freq dur

volume: % of max
freq: Hz
dur: ms

Reverse Tunelling and x2x

To control a box behind a firewall using keyboard and mouse on another computer.

On firewalled computer run

ssh -R 22222:localhost:22 user@localcomp

On local computer run
ssh -p -X 22222 user@localhost
In the last ssh tunnel run

x2x -east -to :0