How to capture the return value (no error code) in unix shell command?

i am trying to capture the return value of simple command:

i.e:

pwd

where can i find the relevant return value without stdout it to file?

Than开发者_开发技巧ks koby

you can use `pwd`

for example:

$ setenv MY_PWD `pwd`
$ echo $MY_PWD
/my/current/path

You can try `pwd`

ole@...:~$ echo `pwd`
/home/ole
ole@...:~$

The first question people should be asking is... what shell are you running this in?

$ MY_PWD=$(pwd) will work in sh-like.

I think the `pwd` will call a subshell, but again, depending on the shell, the syntax to set the output value to a variable will depend on your shell.

echo $?

Is that what you are looking for?

http://tldp.org/LDP/abs/html/exit-status.html

use $?