Public bug reported:
This is on a (relatively) vanilla installation of Ubuntu Server 12.04
LTS 32-bit, with no modifications having been made to /etc/mime.types
other than any changes that might have been performed by packages
installed through synaptic.
$ uname -a
Linux naisu 3.2.0-23-generic-pae #36-Ubuntu SMP Tue Apr 10 22:19:09 UTC 2012
i686 i686 i386 GNU/Linux
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Observe the following behaviour:
$ cat > mime.pl
#!/usr/bin/perl
use strict;
print "mime";
$ file -b mime.pl
a /usr/bin/perl script, ASCII text executable
$ file -b -i mime.pl
Expected output:
text/x-perl; charset=us-ascii
Actual output:
text/plain; charset=us-ascii
Oddly, when the -i flag is omitted, the 'file' utility correctly
identifies the file as a Perl script, but as soon as it's added it seems
to revert back to text/plain. Setting the +x flag on the file makes no
difference. I've checked /etc/mime.types (even though it hasn't been
modified by me directly), and the perl line is present:
$ cat /etc/mime.types | grep x-perl
text/x-perl pl pm
The same commands on a Debian Lenny 5.0.9 system yields the expected output:
$ file -b mime.pl
a /usr/bin/perl script text executable
$ file -b -i mime.pl
text/x-perl
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: file mime perl
** Description changed:
This is on a (relatively) vanilla installation of Ubuntu Server 12.04
LTS 32-bit, with no modifications having been made to /etc/mime.types
other than any changes that might have been performed by packages
installed through synaptic.
$ uname -a
Linux naisu 3.2.0-23-generic-pae #36-Ubuntu SMP Tue Apr 10 22:19:09 UTC 2012
i686 i686 i386 GNU/Linux
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Observe the following behaviour:
$ cat > mime.pl
#!/usr/bin/perl
use strict;
print "mime";
$ file -b mime.pl
a /usr/bin/perl script, ASCII text executable
$ file -b -i mime.pl
Expected output:
text/x-perl; charset=us-ascii
Actual output:
text/plain; charset=us-ascii
Oddly, when the -i flag is omitted, the 'file' utility correctly
identifies the file as a Perl script, but as soon as it's added it seems
to revert back to text/plain. I've checked /etc/mime.types (even though
it hasn't been modified by me directly), and the perl line is present:
$ cat /etc/mime.types | grep x-perl
text/x-perl pl pm
- The same commands on a Debian Lenny 5.0.9 system yield the expected output:
+ The same commands on a Debian Lenny 5.0.9 system yields the expected output:
$ file -b mime.pl
a /usr/bin/perl script text executable
$ file -b -i mime.pl
text/x-perl
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https://bugs.launchpad.net/bugs/1008102
Title:
'file -i' reports wrong MIME type for perl scripts
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