Gopal Ghosh wrote:
Dear All,
my self gopal ghosh a newbie in Linux world. found myself in love with
Linux as i came to know the power of Linux CLI
if two different commands are separated by || (a method by which two
comands can be executed one after another )
such as
ls || nano
the above command executes both the command with out stops after
executing the first one.
the book says that it will stop executing further after the first command
but it is not the same which i observed
pls help
'||' means 'or'. In a list of commands separated by '||', each of the commands are run until one of them succeeds.
as an example:
echo 1 || echo 2
this echoes '1' to the screen, but '2' is /not/ echoed.
in your command, 'nano' should only run if 'ls' fails.
for example, as a normal user, run this:
ls /root || nano
in that case, nano will run, but in this, it won't:
ls ~ || nano
I hope that helps!
kae
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