If you have a debian system and the XMMS in that has a bug that hides the fonts in dailog, try this command…

dpgk-reconfigure locales

Convert from lower case to upper case

echo 'hello world' | tr '[:lower:]' '[:upper:]'

Remove empty lines from a file using sed

sed '/^$/d' file.txt

Original Article

This commands reverses a file in linux – the last line will be the first…

tac file.txt

tac = reverse of cat

You can create a wav file of a written text using this command

echo "It's such a beautiful day! Why are you in front of the computer?" | festival --tts
echo "It's such a beautiful day! Why are you in front of the computer?" | text2wave -scale 50 -o beautiful_day.wav

Recursively check a folder to find the given text using grep

grep -R "text" *

Ever wonder how you can get a man page in into a format you can read and print?

man command | col -x -b  >  command.txt

Original Article

Search for a specific text in a folder using grep

grep "fetchFeedPacksCustomize()" *.js

[tags]grep,search,text,folder[/tags]

How to read a big text file that is tarballed – without extracting the whole thing…

bzcat enwiki-20070802-pages-articles.xml.bz2 | head -10

One can use awk to get a specific column from a command output…

First column of the command
date|awk '{print $1}'

11th Column of the command
ps aux|awk '{print $11}'

Use a different Field separator
cat /etc/passwd|awk -F ':' '{print $1}'

[tags]awk,sed,shell,script,output,filter,text,cli,linux,string,separator[/tags]