Shell: Manipulacao de parametros e variaveis

Referência: http://www.cyberciti.biz/tips/bash-shell-parameter-substitution-2.html

Shell: Check if variable is a number


echo $X | egrep '^[0-9]+$' >/dev/null 2>&1
if [ "$?" -eq "0" ]; then
echo "Postive integer here...."
else
echo "Something else...."
fi


Linux: Controlling su access with sugroups

Referência: http://www.ibm.com/developerworks/aix/library/au-sugroup/index.html?ca=drs-

Shell: Index of the Bash command line for Linux

Referência: http://ss64.com/bash/

Linux: Alterando encoding dos nomes dos arquivos de uma pasta

De ISO-8859-1 para UTF-8:
$ /usr/bin/convmv --notest -f iso88591 -t utf8 -r "$DIR"

De UTF-8 para ISO-8859-1:
$ /usr/bin/convmv --notest -f utf8 -t iso88591 -r "$DIR"

Vim: Para editar arquivos em UTF8 no vim

set termencoding=utf8
set encoding=utf8

Cups: HP LaserJet P1005

1) Remova o pacote 'system-config-printer'

$ removepkg /var/log/packages/system-config-printer-1.2.2-i486-1

2) Remova o pacote 'hplip'

$ removepkg /var/log/packages/hplip-3.10.2-i486-2

3) Termine a execução do CUPS:

$ sh /etc/rc.d/rc.cups stop

4) Baixe e instale o 'foo2zjs':

$ wget -O foo2zjs.tar.gz http://foo2zjs.rkkda.com/foo2zjs.tar.gz
$ tar zxf foo2zjs.tar.gz
$ cd foo2zjs
$ make
$ ./getweb P1005
$ make install
$ make install-hotplug

5) Restart udevd:

$ sh /etc/rc.d/rc.udev force-reload