docs:dollarstern
                Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | |||
| docs:dollarstern [2016/03/14 23:49] – DINFQakTLa 109.86.72.137 | docs:dollarstern [2016/03/15 00:12] (current) – old revision restored 91.89.129.106 | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | http://buy-levaquin.science/#2268 levaquin buy, | + | ====== $* und $@ - Shell Uebergabeparameter ====== | 
| + | |||
| + | Um in einem Shell-Script oder einer Shell-Funktion deren Uebergabeparameter | ||
| + | zu erhalten, gibt es die Variablen $* und *@ . | ||
| + | Diese verhalten sich verschieden. Zusaetzlich variiert das Verhalten je nach Quoting. | ||
| + | |||
| + | Oft findet man die Verwendung von $* **obwohl** dies bei Paramtern mit Leerzeichen | ||
| + | Fehler erzeugt. | ||
| + | |||
| + | Tatsaechlich wird man in den allermeisten Faellen " | ||
| + | |||
| + | Samples: | ||
| + | |||
| + | < | ||
| + | for i in "2 3 4" "5 6 7" ; do echo $i ; done | ||
| + | -> | ||
| + | 2 3 4 | ||
| + | 5 6 7 | ||
| + | |||
| + | x () { for i in $* ; do echo $i; done; } | ||
| + | x "2 3 4" "5 6 7" | ||
| + | -> | ||
| + | 2 | ||
| + | 3 | ||
| + | 4 | ||
| + | 5 | ||
| + | 6 | ||
| + | 7 | ||
| + | |||
| + | x () { for i in " | ||
| + | x "2 3 4" "5 6 7" | ||
| + | -> | ||
| + | 2 3 4 5 6 7 | ||
| + | |||
| + | x () { for i in $@ ; do echo $i; done; } | ||
| + | x "2 3 4" "5 6 7" | ||
| + | -> | ||
| + | 2 | ||
| + | 3 | ||
| + | 4 | ||
| + | 5 | ||
| + | 6 | ||
| + | 7 | ||
| + | |||
| + | x () { for i in " | ||
| + | x "2 3 4" "5 6 7" | ||
| + | -> | ||
| + | 2 3 4 | ||
| + | 5 6 7 | ||
| + | </code> | ||
docs/dollarstern.txt · Last modified: 2016/03/15 00:12 by 91.89.129.106