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Top Forums UNIX for Dummies Questions & Answers perl pack and unpack commands Post 302257387 by max_payne1234 on Wednesday 12th of November 2008 03:43:21 AM
Old 11-12-2008
perl pack and unpack commands

I have a file that contains user id and corresponding password.
Lets say password is "help". The below command will create a hex value for string "help".
perl -e 'print unpack "H*","help"'

So now password is in encoded format.

Then I decoded it in the script where am fetching the password.

perl -e 'print pack "H*","77636462614e3031"'


Now you help is required. In the second step when I am passing the hardcoded value, then it is able to decode it.
But when I am using a variable it is not working.

ex: var="77636462614e3031"
perl -e 'print pack "H*",$var'

This doesn't work. Let me know the syntax so that it will return correct value when I use it in a variable?
I am trying to execute this perl commands in LINUX OS.

Please help.
 

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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME
grub-render-label - generate a .disk_label for Apple Macs. SYNOPSIS
grub-render-label [OPTION...] [OPTIONS] DESCRIPTION
Render Apple .disk_label. -b, --bgcolor=COLOR use COLOR for background -c, --color=COLOR use COLOR for text -f, --font=FILE use FILE as font (PF2). -i, --input=FILE read text from FILE. -o, --output=FILE set output filename. Default is STDOUT -t, --text=STRING set the label to render -v, --verbose print verbose messages. -?, --help give this help list --usage give a short usage message -V, --version print program version Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly installed at your site, the command info grub-render-label should give you access to the complete manual. grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)
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