Parsing postgres-config.ini using shell script returns nothing, am I missing anything?

Question

I have these parameter in postgres-config.ini file:

PGUSER=usr
PGPASSWORD=pass
PGDATABASE=myDB
PGHOST=localhost
PGPORT=5432

I want to parse it and connect to database using shell script (sh file). I use source and grep command like this:

source <( grep = postgres-config.ini )

However, when I tried to print the values using echo $PGHOST it not printing anything.

Can anyone help me what I am doing wrong?

https://stackoverflow.com/questions/19331497/set-environment-variables-from-file-of-key-value-pairs/19331521 does this answer your question? — Maciej B. Nowak, Feb 25 '20 at 13:38
did you try this idea from the Q/A above: `set -o allexport; source conf-file; set +o allexport` — Romeo Ninov, Feb 25 '20 at 14:08

Jon · Accepted Answer · 2020-02-26T14:49:26.333

Your source from a process substitution works fine for me from the command line:

$ cat foo.sh
PGUSER=usr
PGPASSWORD=pass
PGDATABASE=myDB
PGHOST=localhost
PGPORT=5432
$ source <(grep = foo.sh)
$ echo $PGHOST
localhost

Note that the shell variables aren't exported, so they won't be available in subprocesses. If you need them in subprocesses, try:

source <(sed '/=/!d;s/^/export /' foo.sh)

which uses sed to add an export command to lines which match =.

Also, where are you running the source from? If it is in a script, remember that the variables will disappear when the script ends and are not passed to the parent process.

Parsing postgres-config.ini using shell script returns nothing, am I missing anything?

1 Answers1