Linux

52213 readers

652 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

nooter692@lemmy.ml

MarcellusDrum@lemmy.ml

cypherpunks@lemmy.ml

cyclohexane@lemmy.ml

root (or sudo) access delay instead of password (feddit.it)

submitted 2 days ago by dontblink@feddit.it to c/linux@lemmy.ml

24 comments fedilink hide all child comments

Is there a way to require a user to wait a certain time instead of asking for a password every time he wants to execute a command as root or access the root / or another user account?

you are viewing a single comment's thread
view the rest of the comments

[–] cypherpunks@lemmy.ml 23 points 2 days ago* (last edited 2 days ago) (1 children)

sure. first, configure sudo to be passwordless, or perhaps just to stay unlocked for longer (it's easy to find instructions for how to do that).

then, put this in your ~/.bashrc:

alias sudo='echo -n "are you sure? "; for i in $(seq 5); do echo -n "$((6 - $i)) "; sleep 1; done && echo && /usr/bin/sudo '

Now "sudo" will give you a 5 second countdown (during which you can hit ctrl-c if you change your mind) before running whatever command you ask it to.

[–] Flyswat@lemmy.ml 12 points 2 days ago (1 children)

In terms of security, an alias can be easily overridden by a user who can even choose yo use another shell which will not read .bashrc.

So this solution cannot force/require the user to comply to the delay requirement.

I was thinking maybe with a PAM module the delay can be achieved but I haven't found one that readily does that. Maybe OP needs to implement one :)

[–] Hawke@lemmy.world 1 points 1 day ago

pam_faildelay almost does it, but it only delays on auth failure. You would want something that delays on success. Might be almost as simple as “if not” on a check on pam_faildelay.