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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.

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Documenting commands # or $ before sudo? (feditown.com)

submitted 1 year ago by exu@feditown.com to c/linux@lemmy.ml

29 comments fedilink hide all child comments

This might be a stupid question, but hear me out.
I regularly document steps to install various software for myself on my wiki
More recently, I managed to use different custom text in the source markdown to prepend # and $ automatically, so commands can be copied more easily while still clarifying if it should be run as a normal user or as root.

Run command as user

$ some cool command

Run command as root/superuser with sudo

# some dangerous command

I usually remove and sudo and use the # prefix. However, in some cases, the sudo actually does something different that needs to be highlighted. For example, I might use it to execute a command as the user www-data

sudo -u www-data cp /var/www/html/html1 /var/www/html/html2

I often use $ as a prefix, but # would also make sense.
How would you prefix that line?

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[–] james@lurk.fun 4 points 1 year ago* (last edited 1 year ago) (1 children)

Edit: looks like this is wrong lol, that's what I get for not verifying. So maybe $ does make more sense!

Original message:

I think I'd go with #.

The non-root user probably doesn't have permission to run the sudo command as www-data user, but root does.

Unless you previously set permissions for the non-root user to sudo as www-data.

[–] bizdelnick@lemmy.ml 2 points 1 year ago (1 children)

The non-root user probably doesn’t have permission to run the sudo command as www-data user, but root does.

You are wrong. E. g. in Debian (and Ubuntu) the default sudoers file contains

%sudo   ALL=(ALL:ALL) ALL

that means that any user in the sudo group is permitted to execute any command as any other user. The same for redhat/fedora, but the group name is wheel there.

[–] james@lurk.fun 1 points 1 year ago

lol thanks for the correction