On 11/13/24 4:48 PM, Yuri wrote:
The first 'source' command didn't set variables set or exported in the child.sh script, even though 'source' is executed in the current script's context,
The `source' command isn't "executed in the current script's context." It
is executed in a subshell, which can't affect its parent's variables.
The bash man page says:
"Each command in a multi-command pipeline, where pipes are created, is
executed in a subshell, which is a separate process."
POSIX says:
"Changes made to the subshell environment shall not affect the shell
environment. Command substitution, commands that are grouped with
parentheses, and asynchronous AND-OR lists shall be executed in a subshell
environment. Additionally, each command of a multi-command pipeline is in
a subshell environment;"
Some shells, including bash in some circumstances, will execute the last
pipeline element in the current shell, but no shell executes the first
element in the current shell context.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
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