equivalent command for setlocal in unix




hi all,
is there any command in unix equivalent to setlocal in windows.
setlocal command is really useful in restoring local environment variables in windows.
thanks,

"man setlocale"

looking at the microsoft documentation

setlocal creates a local scope and endlocal terminates the local scope. any changes made within the setlocal and endlocal scope are discarded, thereby leaving the original environment unchanged. you can nest these two commands to a maximum of 32 levels. for more information about the setlocal and endlocal commands, see setlocal and endlocal

i think the closest equivalent effect can be created by spawning a subshell using ( ... ).

code:

$ cat a.sh
a=outer
echo $a
(
a=inner
echo $a
)
echo $a
$ ksh a.sh
outer