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bashgnu-parallel

&& in bash script using GNU "parallel"

I would like to run my bash my_script.sh using GNU parallel:

parallel < my_script.sh

where my_script.sh is:

command1 && command2
command3 
command4

Will command1 and command2 run in parallel or sequentially.
In case I am not clear:
command1
command2
command3
command4

or

command1 -> command2
command3
command4

?

Thank you!

Solution

  • && lets you do something based on whether the previous command completed successfully.

    It will run like this:

    command1 -> command2 (only if the exit status of "command1" is zero)
command3
command4