Scripturi BASH
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Exemple scripturi BASH
Script ce elimina zona asociata unui domeniu dat ca parametru de intrare
Puteţi elimina porţiunea din named.conf de la zone "nume.domeniu.dat.ca.parametru.de.intrare" { până la acolada închisă asociată acoladei deschise de mai sus.
Scriptul este:
#!/bin/bash # Bind zone remove script # # Copyright (C) 2005 Silvian Cretu <silvian86@yahoo.com> # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. if [ ! $# = 1 ]; then echo "Usage: $0 domain"; echo "The path to named.conf is defined inside the script"; else pathToNamedDotConf=/etc/named.conf x=$(grep -n "zone \"$1\" {" $pathToNamedDotConf | cut -f1 -d:) sed $x,/\}\;/d $pathToNamedDotConf > temp c=$(sed -n $x'p' < temp) if [ "x`echo $c | grep "zone"`" = "x" ] then sed $x' d' temp > $pathToNamedDotConf else cat temp > $pathToNamedDotConf fi rm -f temp exit fi
Cautarea unui fisier ce contine un anumit string
find /path -name "*" -exec grep -H "&amp;amp;lt;string&amp;amp;gt;" '{}' \;
sau
grep -Hr "&amp;amp;lt;string&amp;amp;gt;" /path/
Fireste, &amp;amp;lt;string&amp;amp;gt; poate fi atat un sir de caractere cat si orice fel de expresie regulata suportata de versiunea particulara de grep disponibila pe masina in cauza.
Deasemenea, pentru a cauta fara a face diferenta intre majuscule si minuscule, adaugati parametrul -i la grep.
Stergerea fisierelor backup
Asa cum stiti, prin traditie in *NIX, editoarele text fac o copie de siguranta fisierelor editate, copie de siguranta ce este denumita identic cu fisierul initial plus caracterul tilda (~). Ei bine... in cazul aplicatiilor web, acest backup mai mult dauneaza decat sa ajute. Nu ar fi prea placut sa aveti un index.php~ in DocumentRoot
find /path -name "*~" -exec rm -f '{}' \;
Probleme cu spatiul pe disc?
Nu stiti unde "vi s-a dus" spatiul de pe disc si e cam greu sa verificati fiecare director in parte?
Linia urmatoare va ajuta, facand totodata si o sortare.
du --max-depth=1 /path | sort -rn