redirection entree sortie

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# 1  
Old 09-11-2009
redirection entree sortie


J'ai un répertoire /travail qui est vide.

je lance dans une console

cd /travail
rmdir aa 2>&1 > /dev/null
et s'affiche alors " rmdir : aa :Aucun fichier ou répertoire de ce type."

J'essaie de comprendre :
rmdir aa 2>&1 redirige 2 vers 1 donc le message d'erreur vers la sortie
et > /dev/null envoie cette sortie sur rien . Aussi je ne comprends
pas que dans ce cas un message d'erreur apparaisse.

Où est mon erreur de raisonnement.
Merci beaucoup.
# 2  
Old 09-11-2009
Hello quiestu, instead of :
rmdir aa 2>&1 > /dev/null

You should try:
rmdir aa > /dev/null 2>&1

# 3  
Old 09-11-2009
Originally Posted by Scrutinizer
Hello quiestu, instead of :
rmdir aa 2>&1 > /dev/null

You should try:
rmdir aa > /dev/null 2>&1

But why" rmdir aa 2>&1 > /dev/null" print a message
# 4  
Old 09-11-2009
C'est 2>/dev/null que tu dois écrire qui veut dire "envoie les messages d'erreur à la poubelle".
2>&1 redirige les erreurs sur la sortie standard (ecran) donc les affiche ensuite tu dis envoie sortie ecran dans poubelle mais plus rien à afficher....

En espérant avoir été assez clair....

regarde ce lien...très intéressant....Chapitre

---------- Post updated at 08:32 AM ---------- Previous update was at 08:31 AM ----------

Euh dernière chose....on va se faire taper sur les doigts...ce forum est ANGLAIS...
# 5  
Old 09-11-2009

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