Use where a shell is run inside a shell (nested shells)
A sub-shell is a shell run inside another shell, typically the same shell. Sub-shell invocation typically uses some special syntax.
Questions tagged [subshell]
234 questions
2
votes
1 answer
Subshells not working
I want to run several commands in parallel, but I have no idea why the following code piece does not work.
#!/bin/bash
( ping 8.8.8.8 )
( ping 192.168.0.1 )
It completely ignores the second ping command. Why is that so?
Edit: OK, now I know that…
mkdrive2
- 662
0
votes
1 answer
How can I detect if I am in subshell, in bash and ZSH?
This question is different from In Bash, how can I detect if I'm in a subshell? because it's not shell specific.
Let's say I open a terminal, which is zsh. I can go deep into that like this,
$ echo $$
359648
$ zsh
$ echo $$
359706
$ zsh
$ echo…
Evan Carroll
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