Ch 25 - simple script to list all tunables
While listing tunable values of /proc/sys/vm, i came to idea to write a script to do it (feel free to use it any way you want it).
I also added some other locations of /proc/sys and some log files.
What could be also added? All suggestions are welcome.
Script is here: https://www.dropbox.com/s/q10x5xn4kn9ccu3/listem?dl=1
(Another script, for Ubuntu, to make your terminal look the way you want it - https://www.dropbox.com/s/578c9ozcarb0esk/ttyset?dl=1 - only for tty, not emulator
Enjoy.)
Comments
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That's a collaborative spirit
Regards,
Luis.
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Script is now bigger.
You can also see some information from /proc, make backup of all tunables, and also change them all from script.
I hope you will find it useful.
I'm still taking suggestions...
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What is this function (tput bold) and (tput sgr0)? Could you give an explaination on what it is and what it can do?0
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It's all in here: http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
tput is not related to this course - i use it to highlight important things and make it clearer to user
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Thank you0
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Nice initiative! A couple of comments
1) you probably need to make listem it a little more distribution aware, at least for the files on /var/log go
2) I got confused for a second because the terminal setting program doesn't work in a gnome-terminal, but it does work on a console
3) /var/log/dmesg never changes; it is the value of dmesg > /var/log/dmesg right after boot. You can get a running look at the kernel message buffer by doing: dmesg -w
You could make the scripts more compact by using case .... esac instead of many repetitive ifs, but it would not chnage functioning.
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Thanks a lot on your reply.
Yes i must run deeper into other distributions and notice differencies; i'm doing this as i learn, so i got a lot more to learn... Obviously.
( Right now i think how to implement apparmor and/or selinux properties change. ;; and - i've deleted Fedora and installed CentOs 6 as adviced by you )
I see also that /var/log/lastlog returns some rubbish, and /var/log/messages doesn't exist at all (Ubuntu 14.04) - so this part needs an update.
I also think i should use -f instead of -e option when checking for file existance, then i probably wouldn't get those (5 in total) access denied messages (or am i wrong?).
dmesg -w is returning invalid option error !!
I made a script for kernel removing, but it is croatian only, so i need to translate it first, if i want to include it.
As i learn i will surely add some more monitoring tools; at the end - script like that could really be of some help to administrators.
If not, it's still good practice though.
Have i missed some important tunables to show (or i'm done with that part)?
Thanks a lot for your interest and help.
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These "tput" commands could prove useful for several scripts that i've created for systems admin and diagnostics. They are not as in-depth as your's is but they are simple and easy to customize. Thanks for sharing your work with us.
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