On 8/12/2020 1:54 PM, Morten Kjærulff via Cygwin wrote:
Hi,
This script:
#!/bin/sh
echo hello >hello.txt
ls -l
cat hell*
cat < hell*
gives me:
$ ./t.sh
total 2
-rw-r--r-- 1 vp01mkf Domain Users 6 Aug 12 19:51 hello.txt
-rwxr-xr-x 1 vp01mkf Domain Users 60 Aug 12 19:51 t.sh
hello
./t.sh: line 5: hell*: No such file or directory
But if I change line1 to
#!/bin/bash
I get
hello
hello
Is that correct behaviour. I guess so, but why? And what is the rule?
From https://tiswww.case.edu/php/chet/bash/POSIX:
When invoked as 'sh', Bash enters POSIX mode after reading the startup
files.
The following list is what's changed when 'POSIX mode' is in effect:
1. Bash ensures that the 'POSIXLY_CORRECT' variable is set.
[...]
11. Redirection operators do not perform filename expansion on the
word in the redirection unless the shell is interactive.
[...]
Ken
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