1
vote
Accepted
Blocking traffic from specific countries. How to kill existing connection?
Since several years, the Linux kernel has been having an API to forcibly kill existing IP sockets whatever their state. It can be done with the ss command and its filter syntax:
-K, --kill
Attempts ...
- 11.2k
1
vote
Bash parameter substitution (baparmsub?) Isnt working
You have to use shopt -s extglob which is usually on for interactive shell, but off in scripts.
#!/bin/bash
shopt -s extglob
step=_SOME_under_SCORES
a=${step//_+([a-zA-Z])/_}
echo "[$step]=>[...
- 8,465
Only top scored, non community-wiki answers of a minimum length are eligible