Search results
Results from the WOW.Com Content Network
The cd command can be used to change into a subdirectory, move back into the parent directory, move all the way back to the root directory or move to any given directory. Consider the following subsection of a Unix filesystem, which shows a user's home directory (represented as ~) with a file, text.txt, and three subdirectories.
The Unix command su, which stands for 'substitute user' [1] [2] (or historically 'superuser' [3] [4]), is used by a computer user to execute commands with the privileges of another user account. When executed it invokes a shell without changing the current working directory or the user environment.
As a security and auditing feature, sudo may be configured to log each command run. When a user attempts to invoke sudo without being listed in the configuration file, an exception indication is presented to the user indicating that the attempt has been recorded. If configured, the root user will be alerted via mail. By default, an entry is ...
The command chown / ˈ tʃ oʊ n /, an abbreviation of change owner, is used on Unix and Unix-like operating systems to change the owner of file system files and directories. Unprivileged (regular) users who wish to change the group membership of a file that they own may use chgrp. The ownership of any file in the system may only be altered by ...
Throughout this section, user refers to the owner of the file, as a reminder that the symbolic form of the command uses "u", to avoid confusion with "other". Note that only the user or the superuser (root) is able to change file permissions. chmod [options] mode[,mode] file1 [file2 ...] [7] Usually implemented options include:
Depending on the system, chsh may or may not prompt the user for a password before changing the shell, or entering interactive mode. On some systems, use of chsh by non-root users is disabled entirely by the sysadmin. [4] On many Linux distributions, the chsh command is a PAM-aware application. As such, its behaviour can be tailored, using PAM ...
This enables users to be treated temporarily as root (or another user). The set group ID, setgid, or SGID permission. When a file with setgid is executed, the resulting process will assume the group ID given to the group class. When setgid is applied to a directory, new files and directories created under that directory will inherit their group ...
chroot is an operation on Unix and Unix-like operating systems that changes the apparent root directory for the current running process and its children.A program that is run in such a modified environment cannot name (and therefore normally cannot access) files outside the designated directory tree.