Shell Programming and Scripting

hi all,

what mean this command

sed'/^[]*$/d'

thanks

your command would produce a sed syntax error; check your command once again

sed'/^[]*$/ d'

If you really have some command named 'sed/^[]*$/ d' you will run that command without passing any arguments to it. You probably wanted to run the sed command passing an argument to it. You will need a space or tab between the word "sed" and the argument to do this. Then the sed command will see the rest of the line as a sed command and choke on it. The presence or absence of a space before the d does not help. The problem is that the empty braces are illegal.

You know, you could have simply tried it...

Code:

$ sed '/^[]*$/ d'  datafile
sed: 1: "/^[]*$/ d": unbalanced brackets ([])
$

allright

there's a sapce after sed
but i don't understand what that command do ??
i run it but nothing