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How to assign a variable to a subshell?
You can output the value in the subshell and assign the subshell output to a variable in the caller script: If the subshell has more to output you can separate the variable value and other messages by redirecting them into different output streams:
What happens when you Echo$ Var in Bash?
This means that when shell is doing field splitting (or word splitting) it uses all these characters as word separators. This is what happens when referencing a variable without double quotes to echo it ( $var) and thus expected output is altered.
Is the subshell a child process in Bash?
In bash a subshell is a child process, other shells differ but even then a variable setting in a subshell does not affect the caller.
How to echo a command with a variable?
Echoing a echo command with a variable. echo “creating new script file.” echo “#!/bin/bash” > $servsfile echo “read -p “Please enter a service:… Stack Overflow About Products For Teams Stack OverflowPublic questions & answers Stack Overflow for TeamsWhere developers & technologists share private knowledge with coworkers
Do you need a subshell for a child shell in Bash?
In bash a subshell is a child process, other shells differ but even then a variable setting in a subshell does not affect the caller. By definition. Do you need a subshell? If you just need a group then use braces: gives 4 (be careful of the spaces in that one).
How to change variable in parent script from subshell?
If the problem is related to a while loop, one way to fix this is by using Process Substitution: To change variables in a script called from a parent script, you can call the script preceded with a “.” You can output the value in the subshell and assign the subshell output to a variable in the caller script:
Can a subshell affect the caller in Bash?
In bash a subshell is a child process, other shells differ but even then a variable setting in a subshell does not affect the caller. By definition.