[so] [Linux] Comportament ciudat variabile de mediu
Bogdan Sass
bogdan.sass at catc.ro
Sat Mar 28 23:27:21 EET 2009
ana-maria lepar wrote:
>
> Concluzia mea (nu stiu daca este corecta in totalitate) :
> - deja cand ii dau ca parametru $HOME, el face interpretarea si in
> argv[1] nu imi va stoca $HOME ci chiar valorea variabilei si pe urma
> va face un getenv("/home/so") si nu o va gasi si va intoarce 0
Asa este. Expandarea argumentelor date in linia de comanda este
facuta de shell, iar programul tau vede doar rezultatul.
Poti evita expandarea respectiva dand comanda in forma
$myprogram '$HOME'
--
Bogdan Sass
CCAI,CCSP,JNCIA-ER,CCIE #22221 (RS)
Information Systems Security Professional
"Curiosity was framed - ignorance killed the cat"
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