Shell Cheatsheet

Quelques astuces pour SHELL…

Boucler sur les sous-répertoires d’un répertoire
Operateur Description Exemple
-b file Checks if file is a block special file; if yes, then the condition becomes true. [ -b $file ] is false.
-c file Checks if file is a character special file; if yes, then the condition becomes true. [ -c $file ] is false.
-d file Checks if file is a directory; if yes, then the condition becomes true. [ -d $file ] is not true.
-f file Checks if file is an ordinary file as opposed to a directory or special file; if yes, then the condition becomes true. [ -f $file ] is true.
-g file Checks if file has its set group ID (SGID) bit set; if yes, then the condition becomes true. [ -g $file ] is false.
-k file Checks if file has its sticky bit set; if yes, then the condition becomes true. [ -k $file ] is false.
-p file Checks if file is a named pipe; if yes, then the condition becomes true. [ -p $file ] is false.
-t file Checks if file descriptor is open and associated with a terminal; if yes, then the condition becomes true. [ -t $file ] is false.
-u file Checks if file has its Set User ID (SUID) bit set; if yes, then the condition becomes true. [ -u $file ] is false.
-r file Checks if file is readable; if yes, then the condition becomes true. [ -r $file ] is true.
-w file Checks if file is writable; if yes, then the condition becomes true. [ -w $file ] is true.
-x file Checks if file is executable; if yes, then the condition becomes true. [ -x $file ] is true.
-s file Checks if file has size greater than 0; if yes, then condition becomes true. [ -s $file ] is true.
-e file Checks if file exists; is true even if file is a directory but exists. [ -e $file ] is true.

 

DIRECTORIES=`ls -1`

for DIR in $DIRECTORIES 
do
 if [ -d $DIR ]
 
 fi
done

 

Grep recursif
grep -r foo
# Comptage
grep -r -c foo

 

 

 

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