On Wed, Dec 23, 2015 at 11:26:51AM +0100, Bytec GmbH - Helmut Koeberle wrote:
> Here is my simple bash script 'tst' that checks wether the first char of
> an argument is a slash.
It can be written in a much simpler way:
[[ $arg = /* ]]
Or:
case $arg in /*) ...
This part actually does look like a bug, though:
> if [ "true" = "true" -a "${h:0:1}" = "/" ]; then echo slash; fi
I can reproduce it (in 4.4.0-beta):
imadev:~$ h='(nopath)'
imadev:~$ [ true = true -a "${h:0:1}" = / ]
bash: [: `)' expected, found /
That said, one SHOULD NOT use -a in a test or [ command. It's not
supported by POSIX any more. If you want compound tests with test/[
you need to use multiple commands:
imadev:~$ [ true = true ] && [ "${h:0:1}" = / ]
imadev:~$
Support for the legacy -a argument is a bash extension.
