Difference between @# and @*

UNIX for Advanced & Expert Users
1

hi

Can any one explain me difference between @# and @* with the help of examples?

Thanks

2

not sure what it means, by any chance do you mean a $@ and a $* ??

3

$*, $@ -all positional parameters, but...
Here are examples:
1:

#!/bin/sh
./2 $*
./2 $@
./2 "$*"
./2 "$@"

2:

#!/bin/sh
echo "'$1'" "'$2'"

Test it

$ ./1 'a b' 'c d'
'a' 'b'
'a' 'b'
'a b c d' ''
'a b' 'c d'

The $* variable treats spaces within variables, and spaces between variables the same. The variable $@ retains the spaces

4

If you meant perl see perlvar(1) (there are a lot of variables)