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Let’s say I have following command
$> MYENVVAR=myfolder echo $MYENVVAR && MYENVVAR=myfolder ls $MYENVVAR
I mean that MYENVVAR=myfolder repeats
Is it possible to set it once for both “&&” separated commands while keeping the command on one line?
Assuming you actually need it as an environment variable (even though the example code does not really need an environment variable; some shell variables are not environment variables):
If you don’t need it as an environment variable, then:
The parentheses create a sub-shell; environment variables (and plain variables) set in the sub-shell do not affect the parent shell. In both commands shown, the variable is set once and then used twice, once by each of the two commands.