Confusion over a small conditional script

[amit4g]

Hi,

I was going through a file containing hundreds of lines of codes having conditional statement written as:

log()
{
echo $@
}

num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
(( num > 0 )) && log "db info:"

so,if here the return value(stored in variable "num" is greater than 0) then
"db info"will be echoed on the screen.
But if i need to do more commands execution if the return value is > 0 then how can i add more statements here.

In past i've used something like this:
num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
if [ "$num" -gt "0" ]; then
statement 1
statement 2
..................

statement N
fi

but how this can be used here ?

~amit

[vsemaska]

(( num > 0 )) && (log "db info:"; statement; statement)

[cfajohnson]

Hi,

I was going through a file containing hundreds of lines of codes having conditional statement written as:

log()
{
echo $@
}

num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
(( num > 0 )) && log "db info:"

so,if here the return value(stored in variable "num" is greater than 0) then
"db info"will be echoed on the screen.
But if i need to do more commands execution if the return value is > 0 then how can i add more statements here.

In past i've used something like this:
num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
if [ "$num" -gt "0" ]; then
statement 1
statement 2
..................

statement N
fi

but how this can be used here ?

if [ $num -gt 0 ]
then
  statement 1
  statement 2
  ..................
  statement N
else
  statement -1
  statement -2
  ..................
  statement -N
fi

I don't understand what your problem is.