Expect script and show command capture problem.

t8t6p2m054 · ‎06-28-2010

Hello everyone.

I want to capture the output of 'show interface status' to text files for our +600 switches. Unfortunately, we have many old 2924's and other models running code prior to 12.0(21) that cannot support 'show command | redirect tftp....' My hope was to use this command set and run it in an Expect script to capture this information on a daily basis. Running the 'show interface status' in an Expect script is pretty easy, but I cannot see how to capture the show command output to a file for transfer to a server. Has anyone else faced this problem and found a solution?

Thanks,

John Blakley · ‎06-29-2010

I had the same problem. You may want to look into a perl script to output the information into a text file, and then use the same perl script to then transfer the text file to whereever you need it.

HTH,

John

HTH, John *** Please rate all useful posts ***

t8t6p2m054 · ‎06-29-2010

Thanks John,

I may end up doing that but I've found an Expect script to open a text file and I'm seeing what I can do with it. Let's see how long it will take to run and open +600 files.

masonkevin · ‎07-02-2010

If you can, could you share the script location? It sounds like a handy one to have in the tool box.

yjdabear · ‎07-02-2010

To write the "show" commands output to a text file in Expect/Tcl:

set filename "/path/to/output.file"

exp_send "show running\r"

set var $expect_out(buffer);
set fid [open ${filname} w+]
put $fid $var
close ${fid}

Large "show" output can often exceed the default size of $expect_out(buffer) however. This can be tuned accordingly:

http://wiki.tcl.tk/9407