A simple script to switch network settings

I use Slackware, in which GUI utilities are minimized. Frankly, I also do not ship X so often. However, at the time when I was sitting on Ubunt, I liked the Network Manager, which was hanging in the tray and indicated the operation of network interfaces. However, another thing was important - it was possible to create “configurations” of network settings in it and switch between them (like “work”, “house”, “cafe”). In Slackware, I only had ncurses-based netconfig on hand, which stupidly copied some files. By repeatedly running it in different places, I didn’t get the effect that I would like - the settings from the previous place were erased. Then I decided to write a simple script that allows you to "switch" settings in the style of Network Manager. I did it roughly, I do not exclude that there is a more subtle solution, but it works and is to some extent universal.

I publish it below, if someone will be useful:

1. #! / bin / bash
3. # Files that the script controls
4. FILES = "/etc/rc.d/rc.inet1.conf /etc/resolv.conf"
6. print_help ( ) {
7. echo To use print
8. echo
9. echo switch_net.sh location
10. echo
11. for file in $ FILES ; do
12. echo file $ file under control
13. done
14. }
16. if [ -z $ 1 ] ;
17. then
18. print_help
19. exit
20. fi
22. for file in $ FILES ; do
23. if [ ! -f $ file . $ 1 ] ; then
24. echo File $ file . $ 1 not exists, please point to existing one
25. exit
26. fi
27. done
29. for file in $ FILES ; do
30. ln -sfv $ file . $ 1 $ file
31. done
33. echo Restarting inet
34. / etc / rc.d / rc.inet1 restart

It is very easy to use. It pushes links to files in which the actual configuration is stored. I only track /etc/rc.d/rc.inet1.conf and /etc/resolv.conf. In this case, they will no longer be files, but links to /etc/rc.d/rc.inet1.conf.location and /etc/resolv.conf.location. I create them manually, then I do switch_net, then netconfig, when I come to a “new place”. To switch from one to another, it is enough to execute switch_net with superuser rights:

bash- 4.1 $ sudo switch_net home
Password:
" / Etc / rc.d / rc.inet1.conf" - > " / etc / rc.d / rc.inet1.conf.home"
" / Etc / resolv.conf" - > " / etc / resolv.conf.home"
Restarting inet