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How to pass the output of one .py script which I executed in GDB using below command:

(gdb)source myfilename.py

to another .py script myfilename2.py

E.g: On running myfile myfilename.py in GDB I get the below results

(gdb)source myfilename.py
(gdb)print $function("input")
(gdb)$1 = someoutput`

If I want to pass $1 as input to another .py script how do I do it.

Thanks for the help.

Sharath
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2 Answers2

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I'm not sure if you can run other python programs output to another in gdb, but of course you can pass output of a command like this.

   (gdb) run "`python -c 'print "\xff\xff\xff\xff"'`"

May be you can try passing the second .py file instead of the command for its output to be passed into first .py.

PSN
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You cannot use contents of GDB variable $1 for your program input, since program launch is performed by shell, not by gdb.

You can store your script output in file, launch gdb for your executable and use command

(gdb)run <outputfile

Or use a named pipe, as suggested in this answer.

Doctor Strange
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