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I understood where was my mistake on the third example.
I did not understand what really happened. Thx.

And I did not realise there were so many actions for a simple pipe (which is not so...

the command line "cat myFile.txt | ..." was only for an example and was present in my both tests, for an equality. ^^

For example, here the test 1 :
cat myFile.txt | grep -o "toto"And here the...

Usually, when you put something between [], that means you're looking for one of the things inside. But if you insert "^" at the begining, that means you're looking something that is not inside.
It...

Yes, the space is useful ^^

So, let's explain what happens : sed -e "s/^<item> *\([^ ]*\) *<\/item>/\1/"

"s/blabla1/blabla2/" means we'll replace blabla1 by blabla2.
"^<item> *" means we want...

Hi,

Once you grepped the right line, you can use this :
... | sed -e "s/^<item> *\([^ ]*\) *<\/item>/\1/"
It will simply select everything between item tags, without spaces. So, it does not...

Hi all,

I would like to use properly an input pipe, like this :
cat myFile.txt | myCommand.shI always find this solution :
while read line; do ...; donebut I have a great lost of performance...