Linux 101: Introduction to sudo - Linux.com
$ sudo ps -f UID PID PPID C STIME TTY TIME CMD root 8997 8715 0 11:57 pts/17 00:00:00 sudo ps -f root 8998 8997 0 11:57 pts/17 00:00:00 ps -f $ sudo bash -c 'ps -f' UID PID PPID C STIME TTY TIME CMD root 8909 8715 3 11:55 pts/17 00:00:00 sudo bash -c ps -f root 8910 8909 0 11:55 pts/17 00:00:00 ps -f $ sudo bash -c 'echo hi; ps -f' hi UID PID sudo (/ s uː d uː / or / ˈ s uː d oʊ /) is a program for Unix-like computer operating systems that allows users to run programs with the security privileges of another user, by default the superuser. It originally stood for "superuser do" as the older versions of sudo were designed to run commands only as the superuser. However, the later sudo su lauches su directly with super user privileges, while sudo bash lauches the shell first and then executes the command with bash -c. The main difference would be that your .bashrc script will be run before executing the su - root command. The outcome depends on that. Use cases: Lauch bash with elevated privilges, using your own password An example of dangerous-function script that contains some functions which, I am trying to accomplish without specifying sudo #!/bin/bash start-one() { ## do dangerous stuff with sudo systemctl start dangerous.service } start-two() { systemctl start dangerous1.service } start-launchwizard() { systemctl start dangerous2.service } ## Calling If you're also passing a command name along with the -s option (for example: sudo -s whoami), then the actual command that gets executed is: sudo /bin/bash -c whoami. If you aren't trying to execute any other command (meaning, you're just trying to run sudo -s ) then you get an interactive shell with root privileges. Nov 08, 2016 · This command works as if the user is running sudo /bin/bash. Sudo -s is a “non-login” style shell. This means that unlike a command like sudo -i or sudo su, the system will not read any environmental files. This means that when a user tells the shell to run sudo -s, it gains root but will not change the user or the user environment. Your
$ sudo bash Once you get the root shell, you can execute any root command without having to enter sudo in front of it every time. 6. Built in commands won’t work with Sudo – Command not found. sudo invokes an executable as the another user, so bash built in commands won’t work.
ssh myuser@machine.net sudo su - privledged_user cat logs > file.txt Running this with sh -x reveals bash is getting stuck on the 'ssh' line. So I tried revising it to this: ssh myuser@machine.net sudo su - privledged_user cat logs > file.txt This also seems to stall indefinitely. Is there a better solution to … Sudo Command in Linux - Learn Cybers Sep 07, 2019 About Unix sudo and su commands - Knowledge Base
What is the difference between "sudo -i" and "sudo bash -l"
shell - sudo with password in one command line? - Super User "John T"'s comment should also include the "-k" parameter, as if you run "sudo -S" without "-k" and sudo authentication cache already has your credentials (and is still valid, default sudo authentication cache is 5 minutes) then bash will run your password as a command instead, which is bad. How To Add Sudo User and Permissions in Linux - scriptcrunch Feb 23, 2019 Sudo command - nixCraft – Bash Shell Scripting Directory Nov 21, 2017 Linux 101: Introduction to sudo - Linux.com