Hi all ;-)

Using this line in a shell script...

sed "s/.mp4//g" ls_mp4Temp > ls_mp4

... i get an error "sed: impossible de lire ls_mp4Temp: Aucun fichier ou répertoire de ce type"

which mean "sed: unable to read ls_mp4Temp: no such file or directory"

But the file exists!!! could someone tell me what could be wrong whith that?

maybe put a ' pwd ' in the line just above the sed one to check your current
directory...

Also, I don't know if it matter, but try replace double quotes (") with single ones (')
in your sed expression

Ok i checked with single quotes it does'nt work.

echo `pwd` gives me //root, thats the right place.

And if i dont do the > ls_MP4 but just "sed "s/.mp4//g" ls_mp4Temp" it works well but i want to redirect the result in a file !!!

No idea?

Re-check your script, I am 99% sure that there is a human mistake somewhere
(or at least post your complete script, if it's not too big)

#!/bin/bash
#03/05/05, clement benezech.

#Derniere mise a jour, 09/05/05

#Script de vérification des fichiers et de transcodage.

#Montage des lecteurs, a develloper. (necessaire?)

#Declaration des variables:

#
PATH=$PATH:/usr/local/bin

#
i=1

j=1

oui=0

#

echo "Transcodage en cours, veuillez patienter"

#

#Création des listes de fichiers.

#

rm ls_mpeg
rm ls_mp4Temp
rm ls_mp4
touch ls_mp4
#
ls /usr/local/Mpeg > ls_mpg

ls /usr/local/MP4 > ls_mp4Temp

#

#creation des rapports

#

touch rapport_sup

touch rapport_cre

#

#Suppression des extensions dans la liste

#
echo `pwd`

sed 's/.mp4//g' ls_mp4Temp > ls_mp4



here is the beginning, if you want more i could give it to you but what' is next do not work for the moment... it a really big script, and since it is my first one I am quite lost sometimes.

Try remove " touch ls_mp4 " line, the file will be created with the > redirection

already done, in fact i added it to see if it could change something... but no result... thanks anyway

It seems that it don't work because i replace ".mp4" with nothing... it is not possible?

Is there a best way to do this?

Replacing something with nothing is perfectly valid and usual in sed

You could try editing the file "in place", that mean you do not need
to redirect output as sed work on the file itself (it use in fact a temp
file to do this, but it is hidden)

Try :
So all .mp4 instances will be removed from ls_mp4Temp file directly

off the top of my head:
have you tried sed ... infile | cat > outfile ?
(that is, piping sed through cat (yay, the identity function!) before >'ing?)

just a thought,

Jonas

sed -i 's/.mp4//g' ls_mp4Temp

The dot should be escaped if you want a literal dot removed:
sed 's/\.mp4//g' ls_mp4Temp

Other than that, it should work, because I tested this line myself:
>cat ls_mp4Temp
jschiwal@matrix:~/test> cat ls_mp4Temp
song1.mp4 song2.mp4
song3.mp4
jschiwal@matrix:~/test> sed 's/.mp4//g' ls_mp4Temp > ls_mp4
jschiwal@matrix:~/test> cat ls_mp4
song1 song2
song3