Shell functions usage

Shell Programming and Scripting
1

Hi all,

I have a doubt..

If we create shell functions through a script itself, can we use the same functions in command line also..

for example:

$ cat a.sh
##### Functions

function system_info
{

}

function show_uptime
{

}

function drive_space
{

}

function home_space
{

}
$

then I executed this script and i want to use these functions in command line and as well as in other scripts also..
Can anyone please tell me that is it possible?

Thanks in advance..

Regards,
VRN

2

Source this function collection/library in your other scripts to make them available. For "using on command line" you might want to specify a bit more what you mean by that.

3

Yes,
to achieve this you need to source the script in the current shell using the dot (.) builtin:

. scriptname
4

If sourced properly, you should be able to re-use the code from within other scripts and or the (bash) shell (e.g. by sourcing your code from /etc/bashrc).

5

Thanks to all for valuble points, will give a try now..

Thanks again

Regards,
VRN