Which shell does sudo use?
Long answer: sudo does not run a shell. It runs the command you pass it directly, no intermediate shell.
Which configuration file is the first file read when a login bash shell is run?
/etc/profile
When Bash is invoked as an interactive login shell, or as a non-interactive shell with the –login option, it first reads and executes commands from the file /etc/profile , if that file exists. After reading that file, it looks for ~/. bash_profile , ~/.
What is shell startup configuration?
The shell program /bin/bash (hereafter referred to as just “the shell”) uses a collection of startup files to help create an environment. This shell invocation normally reads /etc/profile and its private equivalent ~/. bash_profile (or ~/. profile if called as /bin/sh) upon startup.
Where is the bash configuration file?
You can quickly find and open some of those locations with the following commands (using bash console): cd ~ ← It will take you to your home directory. ls -a ← It will display files and folders, both visible and hidden. explorer .
What is a shell configuration?
Shell configuration files are executed automatically when you log in and. out of a shell. They initialize and configure a shell upon login and. [ Related: Wireless charging from A to Z: What you need to know ] perform cleanup operations upon logout.
Which is an example of a sudo command?
Below is an example of a custom sudo log file: 5. Log Sudo Command Input/Output The log_input and log_output parameters enable sudo to run a command in pseudo-tty and log all user input and all output sent to the screen receptively.
Where can I find the sudo configuration file?
The sudo configuration file sudoers is in most cases located in /etc/sudoers. You can use ls command to locate this file. $ ls -l /etc/sudoers -r–r—– 1 root root 481 2010-04-08 21:43 /etc/sudoers Note the default and “must be” permissions of a /etc/sudoers file.
What do you need to know about Sudo install?
For example, you may want an user john to run a find command or custom bash shell script as an user greg or even as a user root ( superuser ) without password exchange. In this case a sudo utility with its /etc/sudoers configuration file will be your friend.
Can a sudo command be asked for a password?
When a sudo command is executed a user is asked for a password. This default bahaviouv of a sudo command can be changed by editing /etc/sudoers config file. If we do not want to be asked for a password we alter a /etc/sudoers file by changing line: The number of minutes before sudo will ask a user to enter a password again is by default 15.