Bash/Scripting/Parse Args: Unterschied zwischen den Versionen
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| − | + | __FORCETOC__ | |
| − | + | ||
| − | + | == Parse with getopts (bash-builtin) == | |
| − | case $1 in | + | |
| + | <pre> | ||
| + | while getopts "fhm" OPTION; do | ||
| + | case $OPTION in | ||
| + | f) FORCE=1 ;; | ||
| + | h) print_help; exit ;; | ||
| + | m) BASE="MM" ;; | ||
| + | *) echo "Unknown Argument $OPTION given"; exit 1;; | ||
| + | esac | ||
| + | done | ||
| + | </pre> | ||
| + | |||
| + | |||
| + | == Parse in 'while'-loop == | ||
| + | <pre> | ||
| + | #!/bin/sh | ||
| + | |||
| + | while [ "$1" ]; do | ||
| + | optarg="" | ||
| + | opt="" | ||
| + | case "$1" in | ||
| + | -*=*) | ||
| + | opt=`echo "$1" | sed 's/=.*//'` | ||
| + | optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` | ||
| + | ;; | ||
| + | *) | ||
| + | opt=$1 | ||
| + | ;; | ||
| + | esac | ||
| + | |||
| + | case $opt in | ||
-u) | -u) | ||
| − | shift; | + | shift; # shift the '-u' |
MYUSER=$1 | MYUSER=$1 | ||
| − | shift; | + | shift; # shift the val |
;; | ;; | ||
| − | -- | + | |
| − | + | --user) | |
| − | + | MYUSER=$optarg; | |
| − | shift; | + | shift; # shift the '--user=val' |
;; | ;; | ||
| − | -h) | + | |
| + | -h|*) | ||
echo "my help text " | echo "my help text " | ||
| − | + | exit 1 | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
;; | ;; | ||
esac | esac | ||
| − | + | done | |
| + | |||
| + | echo "\$MYUSER = $MYUSER" | ||
| + | echo "\$Q = $Q" | ||
| + | |||
| + | exit 0 | ||
| + | </pre> | ||
| + | |||
| + | |||
| + | == Parse in 'select'-loop == | ||
| + | |||
| + | <pre> | ||
| + | select opt in $@; do | ||
| + | if [ "$opt" = "Quit" ]; then | ||
| + | echo done | ||
| + | exit | ||
| + | elif [ "$opt" = "Hello" ]; then | ||
| + | echo Hello World | ||
| + | else | ||
| + | clear | ||
| + | echo bad option | ||
| + | fi | ||
| + | done | ||
| + | </pre> | ||
| − | + | If you run this script you'll see that it is a programmer's dream for text based menus. You'll probably notice that it's very similar to the 'for' construction, only rather than looping for each 'word' in $OPTIONS, it prompts the user. but use '''case''' construct in the select-loop instead... | |
| − | + | ||
| − | + | =Siehe auch= | |
| + | [[Bash/Scripting/Skeleton|Vorlage Bash-Script]] <br/> | ||
| + | [[Bash/Scripting/Variables|Gueligkeitsbereiche von Variablen]]<br/> | ||
Aktuelle Version vom 24. September 2012, 06:03 Uhr
Inhaltsverzeichnis
Parse with getopts (bash-builtin)
while getopts "fhm" OPTION; do
case $OPTION in
f) FORCE=1 ;;
h) print_help; exit ;;
m) BASE="MM" ;;
*) echo "Unknown Argument $OPTION given"; exit 1;;
esac
done
Parse in 'while'-loop
#!/bin/sh
while [ "$1" ]; do
optarg=""
opt=""
case "$1" in
-*=*)
opt=`echo "$1" | sed 's/=.*//'`
optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'`
;;
*)
opt=$1
;;
esac
case $opt in
-u)
shift; # shift the '-u'
MYUSER=$1
shift; # shift the val
;;
--user)
MYUSER=$optarg;
shift; # shift the '--user=val'
;;
-h|*)
echo "my help text "
exit 1
;;
esac
done
echo "\$MYUSER = $MYUSER"
echo "\$Q = $Q"
exit 0
Parse in 'select'-loop
select opt in $@; do
if [ "$opt" = "Quit" ]; then
echo done
exit
elif [ "$opt" = "Hello" ]; then
echo Hello World
else
clear
echo bad option
fi
done
If you run this script you'll see that it is a programmer's dream for text based menus. You'll probably notice that it's very similar to the 'for' construction, only rather than looping for each 'word' in $OPTIONS, it prompts the user. but use case construct in the select-loop instead...
