% for i in $(cat testbla); do echo $i; done foo bar baz boo % export IFS=$'\n' % for i in $(cat testbla); do echo $i; done foo bar baz boo
Tag Archives: bash
logging with script
While you can log everything with screen’s logging functionality, or tee it to some file, you can also use script.
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an inter‐active session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
% script foo Script started, file is foo % ps PID TTY TIME CMD 11448 pts/3 00:00:00 zsh 11511 pts/3 00:00:00 ps % Script done, file is foo % cat foo Script started on Fri Jun 18 10:13:14 2010 % ps PID TTY TIME CMD 11448 pts/3 00:00:00 zsh 11511 pts/3 00:00:00 ps % <ctrl +d> Script done on Fri Jun 18 10:13:25 2010 </ctrl>
rxvt-unicode with 256 colors
# Make a place for rxvt-unicode mkdir rxvt-unicode cd rxvt-unicode/ # Get the source apt-get source rxvt-unicode cd rxvt-unicode-8.4/ # Apply 256 color patch, it's included with the source patch -p1 < doc/urxvt-8.2-256color.patch # Make sure you have all depdencies to build it sudo apt-get build-dep rxvt-unicode # Build it dpkg-buildpackage -us -uc -rfakeroot
This will build 3 packages.
Shift pgup/down to view scrollback buffer
Add to .screenrc
bindkey "^[[5;2~" eval "copy" "stuff ^u" bindkey -m "^[[5;2~" stuff ^u bindkey -m "^[[6;2~" stuff ^d
sysexits
/usr/include/sysexits.h
Disable screen clear after “less”
export LESS=X
column width in bash
tput cols
Command line fu!
http://www.commandlinefu.com/commands/browse/sort-by-votes
bash password generator
< /dev/urandom tr -dc A-Za-z0-9_ | head -c8
bash prompt
bash_prompt_command() { # How many characters of the $PWD should be kept local pwdmaxlen=55 # Indicate that there has been dir truncation local trunc_symbol=".." local dir=${PWD##*/} pwdmaxlen=$(( ( pwdmaxlen < ${#dir} ) ? ${#dir} : pwdmaxlen )) NEW_PWD=${PWD/$HOME/~} local pwdoffset=$(( ${#NEW_PWD} - pwdmaxlen )) if [ ${pwdoffset} -gt "0" ]; then NEW_PWD=${NEW_PWD:$pwdoffset:$pwdmaxlen} NEW_PWD=${trunc_symbol}/${NEW_PWD#*/} fi } bash_prompt() { if [ -n "$PS1" ]; then PS1="$XTITLE""\033[01;32m\][\!][\u@]\[\033[01;34m\] \${NEW_PWD}\n >\\$\[\033[00m\] " fi }