Question

I want to do this:

./first.sh
if [ $? -ne 0 ]; then
exit
fi
# pipe output of first.sh to second.sh

So second.sh shouldn’t run unless first.sh succeeds but I don’t really know where to pipe the output of first.sh to in the mean time.

Answer 1

Why not dump it to a file, and then write that into second.sh if first.sh succeeds ?

./first.sh > /tmp/first.pid 
if [ $? -ne 0 ]; then
   exit
fi   
./second.sh < /tmp/first.pid

You may want to scope your file with a pid or similar if concurrency is an issue.