linux – Page 4

rm -rf argument list too long

Posted on 02.06.2017 by mario

Well to often here is this the error message rm -rf argument list too long cause there are too many file in the directory. With the help of a little script those files can be deleted.

for FILE in `ls`
do
rm $FILE
done

Things to know about nano editor

Posted on 02.09.201602.09.2016 by mario

Open nano with

nano -wcF

ALT + G = Goto Line Number
CTRL + R = Insert File
CTRL + W = Search String or by RegEx
ALT + R = Replace string or Replace by RegEx
ALT + , = Goto previous buffer
ALT + . Goto next Buffer

Today one of my linux servers did not boot. Instead there was a grub uefi shell. Typing the help command listed a bunch of commands in dark blue on a dark grey. Not easy to read. Trying to use the gui did not solve the problem. Resetting the config did also not help. Some forum posts said to create a symlink to the efi file. My issue was that /boot/efi is a separate partion due btrfs on the my system.

What did work was using the command line to add the efi again.

bcfg boot add 0 fs0:\EFI\debian\grubx64.efi "Debian"

However writing in english mode on a german style keyboard is often “times of wonder”. Use # ( hash) for the backslash and ä for the quotes. I still wonder why I have to use a backslash on a linux system…

Bash list only hidden files

Posted on 24.02.2015 by mario

A shortcut / alias for listing only hidden files and folders<

alias us="ls -la | grep ^- | awk '{print \$9}' | grep ^\\\."

print only file name with ls -l

Posted on 19.02.2015 by mario

There is an easy trick to display only the filename with ls -l

ls -l | awk '{print $9}'

nano goto line number

Posted on 10.11.2014 by mario

It is very hidden how to go to a line number in linux nano editor

strg + w
strg + t
enter Line number

Find the largest files on your linux system

Posted on 20.01.2014 by mario

Find the largest files on your linux system

cd /
du -k | sort -n | perl -ne 'if ( /^(\d+)\s+(.*$)/){$l=log($1+.1);$m=int($l/log(1024)); printf  ("%6.1f\t%s\t%25s  %s\n",($1/(2**(10*$m))),(("K","M","G","T","P")[$m]),"*"x (1.5*$l),$2);}'

Subversion (svn) 1.8 on Debian 7 wheezy

Posted on 04.08.2013 by mario

Just installed a brand new debian and than I can’t use my working copies cause the svn version is still 1.6.x
So an upgraded is required!

wget http://opensource.wandisco.com/wandisco-debian.gpg -O /tmp/wd-deb.gpg
apt-key add /tmp/wd-deb.gpg
rm /tmp/wd-deb.gpg
sudo nano /etc/apt/sources.list

deb http://opensource.wandisco.com/debian wheezy svn18

So now I can have fun again! Why not git? Cause the company repos are still in svn and I had some troubles with git-svn.

/dev/null: Permission denied

Posted on 13.08.201222.09.2012 by mario

Das ist mal ein nette Fehlermeldung! Also, wie reparieren?

sudo rm /dev/null
sudo mknod -m 0666 /dev/null c 1 3

und schwups geht alles wieder. Bleibt nur die Frage, wieso und wann das kaputt gegangen ist!?

farbige man pages

Posted on 12.06.2012 by mario

Man pages sind nicht immer sehr übersichtlich. Die man pages etwas einzufärben hilft!

ans Ende der .bashrc

export LESS_TERMCAP_mb=$'\E[01;31m'
export LESS_TERMCAP_md=$'\E[01;31m'
export LESS_TERMCAP_me=$'\E[0m'
export LESS_TERMCAP_se=$'\E[0m'
export LESS_TERMCAP_so=$'\E[01;44;33m'
export LESS_TERMCAP_ue=$'\E[0m'
export LESS_TERMCAP_us=$'\E[01;32m'

schon sind die man pages in Farbe.

Category: linux

rm -rf argument list too long

Things to know about nano editor

debian boots into uefi shell

Bash list only hidden files

print only file name with ls -l

nano goto line number

Find the largest files on your linux system

Subversion (svn) 1.8 on Debian 7 wheezy

/dev/null: Permission denied

farbige man pages

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