Setting specific variables from a different script

Question

I need to take specific variables from one script and use them in a different script.

Example:

Original script:

VARA=4              # Some description of VARA
VARB=6              # Some description of VARB
SOMEOTHERVAR="Foo"
/call/to/some/program

I want to write a second script that needs VARA and VARB, but not SOMEOTHERVAR or the call to the program.

I can already do:

eval $(grep 'VARA=' origscript.sh)
eval $(grep 'VARB=' origscript.sh)

This seems to work, but when I want to do both, like this, it only sets the first:

eval $(grep 'VAR[AB]=' origscript.sh)

because it seems to concatenate the two lines that grep returns. (Which probably means that the comments save the first assignments.)

Barmar · Accepted Answer · 2018-10-11 00:41:18Z

2

Put quotes around it, so that the newlines in the output of grep will not be turned into spaces.

eval "$(grep 'VAR[AB]=' origscript.sh)"

answered Oct 11, 2018 at 0:41

Barmar

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