↳ In-reply-to » I love shell scripts because they’re so pragmatic and often allow me to get jobs done really quickly.

@falsifian@www.falsifian.org Exactly! 🥳

So this works:

$ bash -c 'set -u; bar=1; foo=$bar; if [[ "foo" -eq "bar" ]]; then echo it matches; fi'
it matches

Without the misleading quotes:

$ bash -c 'set -u; bar=1; foo=$bar; if [[ foo -eq bar ]]; then echo it matches; fi'
it matches

As does this:

$ bash -c 'set -u; bar=1; foo=$bar; if (( foo == bar )); then echo it matches; fi'
it matches

What the person originally meant was what bender said:

$ bash -c 'set -u; foo=bar; if [[ "$foo" = "bar" ]]; then echo it matches; fi'
it matches

It’s all rather easy once you’ve understood it … but the initial error message of the initial version can be quite unexpected.