Once I saw in /bin
a file [
. Since I don’t want to destroy the fabric of my little unixiverse I thought: Maybe some leftover of some command gone wrong or whatever. I did a ¯\_(ツ)_/¯
and moved on.
Today I learned:
When you write a script like this:
if [ a = b ]; then
echo "a equal to b"
fi
You don’t use a language built in expression. You run with the executable /bin/test
. Because /bin/[
is an alias for /bin/test
. The only difference is that [
looks for the closing ]
to even things out.
So the script above could also be :
if test a = b; then
echo "a equal to b"
fi
🤯
source: https://jmmv.dev/2020/03/test-bracket.html via Hacker News