Once you grasp that [
is a command, a whole lot becomes clearer!
[
is another way to spell "test
".
help [
However while they do exactly the same, test
turns out to have a more detailed help page. Check
help test
...for more information.
Furthermore note that I'm using, by intention, help test
and not man test
. That's because test
and [
are shell builtin commands nowadays. Their feature set might differ from /bin/test
and /bin/[
from coreutils which are the commands described in the man
pages.
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