Cisco IOS routers, doing a "dir", and I want to grab all file names with ".bin" in the name.
Example string:
Directory of flash0:/
1 -rw- 95890300 May 24 2015 11:27:22 +00:00 c2900-universalk9-mz.SPA.153-3.M5.bin
2 -rw- 68569216 Feb 8 2019 20:15:26 +00:00 c3900e-universalk9-mz.SPA.151-4.M10.bin
3 -rw- 46880 Oct 25 2017 19:08:56 +00:00 pdcamadeusrtra-cfg
4 -rw- 600 Feb 1 2019 19:36:44 +00:00 vlan.dat
260153344 bytes total (95637504 bytes free)
I've figured out how to pull "bin", but I can't figure out how to pull the whole filename (starting with " c", ending in "bin"), because I want to then use the values and delete unwanted files.
I'm new to programming, so the regex examples are a little confusing.
You can use this regex
^[\w\W]+?(?=(c.*\.bin))\1$
^ - Start of string.[\w\W]+? - Match anything one or more time ( Lazy mode ).(?=(c.*\.bin)) - Positive lookahead match c followed by anything followed by \.bin ( Group 1)\1 - Match group 1.$ - End of string.
Demo
To match the filename that start with a c (or at the start of the string) you might use a negative lookbehind (?<!\S) to check what is on the left is not a non-whitespace character.
Then match either 1+ times not a whitespace character \S+ or list in a character class [\w.-]+ what the allowed characters are to match. After that match a dot \. followed by bin.
At the end you might use a word boundary \b to prevent bin being part of a larger word:
(?<!\S)[\w.-]+\.bin\b
regex101 demo
Thank you Code Maniac!
Your code finds one instance, and I needed to find all. Using what you gave me plus messing around with some other examples, I found this to work:
binfiles="{{ dir_response.stdout[0] | regex_findall('\b(?=(c.*.bin))\b') }}"
Now I get this:
TASK [set_fact] ********************************************************************************************************
task path: /export/home/e130885/playbooks/ios-switch-upgrade/ios_clean_flash.yml:16
Tuesday 12 February 2019 08:29:58 -0600 (0:00:00.350) 0:00:03.028 ******
ok: [10.35.91.200] => changed=false
ansible_facts:
binfiles:
- c2900-universalk9-mz.SPA.153-3.M5.bin
- c3900e-universalk9-mz.SPA.151-4.M10.bin
- c2800nm-adventerprisek9-mz.151-4.M12a.bin
Onto the next task of figuring out how to use each element. Thank you!
