Am 23.12.2018 um 06:59 schrieb Steven Penny:
With Linux, these commands produce expected results:
$ cd /tmp
$ touch alpha.txt
$ test -r alpha.txt; echo "$?"
0
$ chmod -r alpha.txt
$ test -r alpha.txt; echo "$?"
1
$ chmod +r alpha.txt
$ test -r alpha.txt; echo "$?"
0
However with Cygwin, unexpected results are produced:
$ cd /tmp
$ touch alpha.txt
$ test -r alpha.txt; echo "$?"
0
$ chmod -r alpha.txt
$ test -r alpha.txt; echo "$?"
0
It seems Cygwin is not able to produce non-readable files.
you are missing the point that the Windows filesystem
has additional ACL permission as indicated by the "+"
in the ls output.
If you remove those permissions the test case replicate
Linux results.
$ mkdir pippo
$ ls -l | grep pippo
drwx------+ 1 Marco Kein 0 Dec 23 07:03 pippo
^ ACL additional permissions
$ getfacl pippo/
# file: pippo/
# owner: Marco
# group: Kein
user::rwx
group::---
other::---
default:user::rwx
default:group::r-x
default:other::r-x
$ setfacl -k pippo
$ ls -l |grep pippo
drwx------ 1 Marco Kein 0 Dec 23 07:05 pippo
$ getfacl pippo/
# file: pippo/
# owner: Marco
# group: Kein
user::rwx
group::---
other::---
$ cd pippo
$ touch alpha.txt
$ test -r alpha.txt; echo "$?"
0
$ chmod -r alpha.txt
$ test -r alpha.txt; echo "$?"
1
$ chmod +r alpha.txt
$ test -r alpha.txt; echo "$?"
0
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