nas - Create Reusable Session Scripts
$ nas --help nas [options] [hostname or IP] -p, --personality Device <personality> (default: "ios") -t, --transport <transport> method (Serial, Telnet, default: SSH) -u, --username <username> to connect as on device (default: $USER) -R, --record Record session -P, --playback Play back session -s, --script When recording, save playback script to this <filename> -l, --cmdlog NAS <file> to record commands to, or play them back from -e, --exit-last Num. of output lines from last command is program exit status -c, --cloginrc RANCID cloginrc <file> with device credentials -z, --nopasswords Do not ask for device passwords (if not using cloginrc) -o, --echo Echo commands sent, when playing back the recorded script/cmdlog -M, --paging Do not attempt to disable command output paging -B, --nobanner Suppress display of any login banner received from the device -q, --quiet Hide informational messages -v, --verbose NCI log <level> ("debug", "notice", "info", etc) -V, --version Display this program's version number -h, --help Display this help text
Use this program to help write reusable Net::Appliance::Session scripts, play them back, and also to more easily connect to network devices.
Once connected to the device you can enter any command and it will be run.
Please see the
SYNOPSIS section and the command line help for the available options. In the future more documentation will be forthcoming, I promise. Here are some highlights:
exit-last option can be useful for creating a session script which checks for some error condition. Assuming the last command should have no output on success, then the exit status of the script will be non-zero when there's a problem. Use this with
-R to make a reuseable script.
To play a script with no output other than that returned from the device in response to sent commands, use the switch combination
-Bqoz. Note that you will need to be able to login automatically, and RANCID config isn't yet supported.
Oh, yes, in the future the script will read a RANCID
.cloginrc file for the device credentials, but it doesn't do that, yet.
If you don't provide a hostname or IP then the script goes into a loop waiting for the hostname on standard input. This way, you can pipe a list of device names to the script and it will execute the commands on each one.
In case you didn't know, the library has support for connecting to linux boxes using the
-p bash setting to chose the Bash shell personality.
Getting to be a super-user is a little clunky at the moment. I need to work on that a little more. Take care that your scripts don't contain any passwords!
The methods of Net::Appliance::Session are available by using the command
!s <method-name>. The best use of this is to gracefully disconnect, by issuing:
You can also enter the command
!m to see a list of available Macros. If you don't know what a Macro is, don't worry. You run a Macro with the
!m <macro-name> [params] command.
Oliver Gorwits <email@example.com>
This software is copyright (c) 2012 by Oliver Gorwits.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.