Tagged Questions
2
votes
1answer
110 views
How to wait for a subprocess used for I/O redirection?
Consider the following snippet of Bash script:
exec 3> >(sleep 1; echo "$BASHPID: here")
do-something-interesting
exec 3>&-
wait $!
echo "$BASHPID: there"
When executed, it produces:
...
3
votes
4answers
408 views
Bash Reuse Process Substitution File
I have a big script which takes a file as input and does various stuff with it. Here is a test version:
echo "cat: $1"
cat $1
echo "grep: $1"
grep hello $1
echo "sed: $1"
sed 's/hello/world/g' $1
I ...
14
votes
4answers
1k views
Process substitution and pipe
I was wondering how to understand the following:
Piping the stdout of a command into the stdin of another is a powerful
technique. But, what if you need to pipe the stdout of multiple
...
