Calling multiple functions in parallel

Shell Programming and Scripting
1

Hello,

I have multiple functions within a shell script. eg. function_database_backup, unix_tar_creation, etc.

I would like to run these functions in parallel, as each is independent of the other.

If these were simple commands, I could have probably run each of the commands in background.

My question is, how can I call multiple functions to execute in parallel in ksh?

Appreciate your help.

2

Can you have those two functions in two separate file? If so, then you can run first load them and run them at your prompt as commands.

[user@host ~]# cat add2_3.fn
add2_3 () {
    x=$((2 + 3))
    echo x
    sleep 4
    echo "coming out of add fn"
}
[user@host ~]#
[user@host ~]# cat mul2_3.fn
mul2_3 () {
    x=$((2 * 3))
    echo $x
    sleep 5
    echo "coming out of multiply fn"
}
[user@host ~]#
[user@host ~]# . ./add2_3.fn
[user@host ~]# . ./mul2_3.fn
[user@host ~]#
[user@host ~]# add2_3 &
[user@host ~]# mul2_3 &