KašpiPage

tail -f filename

find top_directory -name mask

grep keyword `find dir -name mask`

or a bit easier (without mask), the -I excludes binary files

grep -r -I keyword dir

There is no undelete utility. The only chance is to grep your disk and search for some phrases which were in your lost document.

1. Unmount the partition (to prevent overriding you data). If not possible, boot from a CD (e.g. Knoppix).
2. Try out the following command (I found it somewhere on the net)

   grep --binary-files=text -300 "the search phrase" /dev/sda1 > output

   The -300 switch gives the size of block (around found phrase) to be saved to the output file.

In bash

unset -v $(env | sed 's/\([A-Z_0-9]*\)=.*/\1/')

in tcsh

set bla=`env | sed 's/\([A-Z_0-9]*\)=.*/\1/'` ; unsetenv ${bla}

while read line
do
	echo "line = $line"
done < <(cvs update -d 2>&1)

Advantage: the loop is not run in subshell and hence in its body one can modify shell variables.

The 2>&1 redirects stderr to stdout which it turn means that also error output goes through the while loop.

echo -e "\033[00;31mUNKNOWN FILES\033[00m"

For more information see article Paint your bash.

ffmpeg -i <your_input_video>.flv -vn -acodec copy <your_output_file>.mp3

The flash files often miss the flv suffix. Often, then can be found by

ll /tmp|grep Flash

See my work_konsole script and tabs definition file. A bit more details can be found in The Konsole Handbook.

pwd -P

• date/time to timestamp

date -d "Oct 20 12:00:00 CEST 2011" +%s

• timestamp to date/time

date -d @1319104800