This is just a collection of some commands and tricks that I keep forgetting
- Search and replace in multiple files, using perl
perl -p -i -e 's/search/replace/g *.txt
- Change the color of a (gentoo) bash prompt
export PS1="
\[\]
\u@\h\[\]
\w \$\[\]
"\[\]
\u@\h\[\]
\w \\(\) " - Operations on multiple files using bash (in this example: something interesting is done with every tex file in the current directory)
for f in *.tex do echo "doing something interesting to file $f" done
- Redirect both standard error and stdout to /dev/null
2>&1 >/dev/null
- Syntax highlighting in openoffice (for presentations, for example)
Athough it seems a bit inefficient, this is the way to do it:- open the file in kate and export it as html
- open the file in a web-browser and copy the text
- paste the text in an openoffice writer document
- save the file als .odt or export it as .rtf for use in impress
- Change the display of the "top" command, and save it for next time
- change the settings, for example like this: start top, press i, 1, d 1
- press W to save the current settings to ~/.toprc
- to use an end-of-line character to a vim search query: ctrl-V ctrl-M