Linux4All.Net

Welcome to the first in what I hope will be a series of quick tips and tricks collections. These collections will consist of one and two line commands that don’t warrant entire stand-alone tips to be written for them.

These tips are in no particular order….

Watch a log file as its appended to

tail -f logfile

Redirect a man page to a file

man whatever | col -b > whatever.out

Allow a command to continue execution after logout

nohup mycommand &

Extract tarball when tar has no z option

gzip -dc mytarball.tar.gz | tar xvf -

Display one particular line from a file

set linenumber = 8 # tcsh
linenumber=8 # ksh
sed -n "${linenumber}p" filename

Display current runlevel

who -r

Split lines of text into n-char lines

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