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Hi,
There's a subtle bug in the bootstrap.cgi script [0] for configuring the
GPG keys for the repos.
There's a non-printable character on line 122, which causes the script
to create a new text file '/dev/nullNON_PRINTABLE_CHARS_HERE'
Basically the bug creates a file that looks like /dev/null but again is
hard to spot:
$ ls -1 /dev/null*
/dev/null
/dev/null
'ls -Q' can show the strangeness, or 'stat':
$ ls -1Q /dev/null*
"/dev/null"
"/dev/null "
$ stat /dev/null* | grep File
File: ‘/dev/null’
File: ‘/dev/null ’
You can't view the chars easily:
$ sed -n '122p' dell_bootstrap.cgi
email=$(gpg -v ${GPG_FN} 2>/dev/null | grep -i @dell.com | sed
's/.*<\(.*\)>.*/\1/')
But with 'od -c' you can see them '302' and '240':
$ sed -n '122p' dell_bootstrap.cgi | od -c
0000000 e m a i l = $ ( g p g
0000020 - v $ { G P G _ F N } 2 > /
0000040 d e v / n u l l 302 240 | g r e
0000060 p - i @ d e l l . c o m |
0000100 s e d ' s / . * < \ ( . * \
0000120 ) > . * / \ 1 / ' ) \n
0000133
I'd imagine the bug was the result of a simple text editor snafu.
The "/dev/null " file does no harm, but just in case you want to remove it
you could use something like:
find /dev -type f -name "null*" -exec mv -vi {} /tmp \;
Paddy
[0] https://linux.dell.com/repo/hardware/dsu/bootstrap.cgi
--
Paddy Doyle
Research IT / Trinity Centre for High Performance Computing,
Lloyd Building, Trinity College Dublin, Dublin 2, Ireland.
Phone: +353-1-896-3725
https://www.tchpc.tcd.ie/
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