You can run commands in parallel in the bash shell using the “&” operator to run a command in the background, and the “wait” command to wait for all background jobs to complete.
For example:
# Run command1 in the background
command1 &
# Run command2 in the background
command2 &
# Wait for all background jobs to complete
wait
You can also use the “xargs” command to run multiple commands in parallel, specifying the maximum number of parallel jobs with the “-P” option.
For example:
# Run up to 4 commands in parallel
echo "command1 command2 command3 command4" | xargs -n 1 -P 4 sh -c