Hyperthreading in Bash
Sometimes in bash you need to run two scripts concurrently with one script and wait for them to finish. We can do it like this:
#!/bin/bash
echo Starting A ...
./a.sh && true || tee fail_A &
echo Starting B ...
./b.sh && true || tee fail_B &
wait < <(jobs -p)
test -f fail_A && echo A failed. && exit
test -f fail_B && echo B failed. && exit
echo "End..." Where script A is:
#!/bin/bash
for i in {1..10}
do
echo "A: "$i
sleep 1
donescript B is:
#!/bin/bash
for i in {1..10}
do
echo "B: "$i
sleep 2
doneThe main script will wait until scripts A and B, which are executing concurrently, complete. If either script A or B fails, the main script will not continue.
