« Bash » : différence entre les versions

CURDIR=$(dirname $(readlink -f $0))

prog > log.txt  2>&1

file=$(printf 'FILE=_%s_%s.dat' $val1 $val2)

grep "test" test.txt
if [ $? -gt 0 ]; then
    echo "ERROR!"
fi

#!/bin/bash
set -x
...

#!/bin/bash
if [ $# -ne 2 ]
then	
	exit
fi

#!/bin/bash
 
while getopts lvxad:s:u:h opt
do
        case $opt in
                d)  DISPLAY="$OPTARG:0.0"
                        DIS_CMD="-display $DISPLAY"
                        export DISPLAY
                        ;;
                s)  SSH_CMD="ssh $OPTARG"
                        HOSTNAME=$OPTARG
                        ;;
                h)      ACTION=HELP
                        echo "help"
                        ;;
                x)  ACTION=XXREF
                        ;;
                a)  ACTION=XXREF_ALL
                        ;;
                l)  ACTION=LIST
                        ;;
                u)  USER=$OPTARG
                        echo "user:" $USER
                        ;;
                v)  opt_verbose=1
                        ;;
        esac       
done
 shift $(($OPTIND - 1))

shopt -s extglob
rm -rf -- !(.git)

#!/bin/bash
F=”thisfile.txt”
echo ${F#*.}
txt
echo ${F%.*}
thisfile

if [ ! -f /tmp/foo.txt ]
then
    echo the file does not exist
fi

if [ ! -L /tmp/foo.txt ]
then
    echo the link does not exist
fi

#!/bin/bash
echo -n "Suspend2" | dd of=/my_hibernation_image bs=1 conv=notrunc

#DIR prend la valeur du premier argument de la ligne de commande ou tmpdir
DIR=${1:-$tmpdir}

if [ "$VAR" == "Test" ]
then
     echo "var is Test"
fi

if [ -z "$1" ]
then
	echo "unset variable"
else
	echo "variable is set"	
fi

#!/bin/bash
 
A="abcd dcba"
B=A
C=${!B}
echo $C

#!/bin/bash
 
read -s password

#!/bin/bash
 
$ A=2
$ B=3
$ C=$((A+B))
$ echo $C

#!/bin/bash
if [[ $NUMBER =~ ^[0-9]+$ ]]; then
    echo ceci est un nombre
else
    echo ceci n'est pas un nombre
fi