Poldek, pomysł

[Michal Kochanowicz]

On Sun, Sep 10, 2006 at 03:42:03PM +0200, Andrzej Krzysztofowicz wrote:
> x jest przydatny, gdy wartosc ZMIENNA moze zaczynac sie od "-"

Chyba nie (wykonane na pdksh):

#v+
[misiek at wieszak /tmp]$ A="-blah"
[misiek at wieszak /tmp]$ if [ "x$A" != "x" ]; then echo ok; fi
ok
[misiek at wieszak /tmp]$ if [ "$A" != "" ]; then echo ok; fi
ok
[misiek at wieszak /tmp]$ echo $A
-blah
#v-

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