et j'ajoute:
"""
If you are using zsh, they array is called pipestatus (case matters!) and the array indices start at one:

$ false | true
$ echo "${pipestatus[1]} ${pipestatus[2]}"
1 0
"""
source: http://unix.stackexchange.com/questions/14270/get-exit-status-of-process-thats-piped-to-another

via http://shaarli.callmematthi.eu/?4AvXmQ

Ctrl-u Delete everything ⇤ from the cursor back to the line start
Ctrl-k Delete everything ⇥ from the cursor to the end of the line
Alt-d Delete word ⇨ untill before the next word boundary