Table of Contents
What option for the command will display all files including hidden files?
The “ls” command has many options that, when passed, affect the output. For example, the “-a” option will show all files and folders, including hidden ones.
What is the top level directory on a Linux system is represented as?
The top-level directory on a Linux system is represented as: C: /root. /May 9, 2019.
Which command can be used to view hidden files in Linux quizlet?
The command ls-al will give you a long list of the contents of the current working directory that includes hidden files and attributes for each file and directory.
Which character at the beginning of a long listing indicates a directory?
File Permissions A representation of the file’s access permissions. The first character is the type of file. A “-” indicates a regular (ordinary) file. A “d” indicates a directory.
What command is used to display the characteristics of a process?
ps command is used to display the characteristics of a process.
How do you use su command?
The su command lets you switch the current user to any other user. If you need to run a command as a different (non-root) user, use the –l [username] option to specify the user account. Additionally, su can also be used to change to a different shell interpreter on the fly.
Which directory contains configuration files in Linux?
The /etc directory contains the configuration files for the system. All of the files in /etc should be text files.
What does tilde represent in Linux?
The tilde (~) is a Linux “shortcut” to denote a user’s home directory. Thus tilde slash (~/) is the beginning of a path to a file or directory below the user’s home directory. For example, for user01, file /home/user01/test. file can also be denoted by ~/test.
What is the default user for the su command?
The su (short for substitute or switch user) utility allows you to run commands with another user’s privileges, by default the root user.
What character’s is are used to hide a folder?
The +s attribute is the System file attribute and indicates the file is for use by the operating system and is not normally displayed in a directory listing. The +h is the Hidden file attribute and indicates the file will not be displayed in a directory listing by default.
Which command can be used to view hidden files in Linux?
To view hidden files, run the ls command with the -a flag which enables viewing of all files in a directory or -al flag for long listing. From a GUI file manager, go to View and check the option Show Hidden Files to view hidden files or directories.
Which command will show a list of all files including hidden files in your current working directory?
The ls command ls -a will list all files including hidden files (files with names beginning with a dot). ls -F gives a full listing, indicating what type files are by putting a slash after directories and a star after executable files (programs you can run). ls -l gives a long listing of all files.
What does the vertical bar character do in a regular expression?
The vertical bar symbol acts as an OR operator and matches the values to the left and right of the vertical bar. For example, the regular expression Jack|Jill matches “Jack” and “Jill”. The backslash symbol acts as an escape sequence. Use it when you want search for a regular expression symbol.
Which directory represents the root of the filesystem hierarchy?
Filesystem Hierarchy Standard Facts Directory Description / The / character represents the root directory of the Linux system. All directories are below the / (root directory) of the system. /bin The /bin directory contains binary commands that are available to all users.
What is a bash shell?
Bash (Bourne Again Shell ) is the free version of the Bourne shell distributed with Linux and GNU operating systems. Bash is similar to the original, but has added features such as command line editing. Created to improve on the earlier sh shell, Bash includes features from the Korn shell and the C shell.
Which command is used to identify files?
file command is used to determine the type of a file. .file type may be of human-readable(e.g. ‘ASCII text’) or MIME type(e.g. ‘text/plain; charset=us-ascii’). This command tests each argument in an attempt to categorize it.
Which command is used to display the top of the file?
Which command is used to display the top of the file? E. Explanation: The head command displays the first few lines at the top of a file.
Which command can be used to start the process with the required priority?
nice and renice command nice command is used to start a process with specified nice value, which renice command is used to alter priority of running process.
What is sudo and su?
Su switches you to the root user account and requires the root account’s password. Sudo runs a single command with root privileges – it doesn’t switch to the root user or require a separate root user password. Additionally, it is advisable to stick to sudo when performing tasks that require root privileges.
What does sudo command do?
Whenever a user tries to install, remove or change any piece of software, he has to have the root privileges to perform such tasks. The sudo command is used to give such permissions to any particular command that a user wants to execute once the user enters a user password to give system based permissions.
What does sudo stand for?
Sudo (superuser do) is a utility for UNIX- and Linux-based systems that provides an efficient way to give specific users permission to use specific system commands at the root (most powerful) level of the system.
Which file contains configuration files?
The /etc hierarchy contains configuration files. A “configuration file” is a local file used to control the operation of a program; it must be static and cannot be an executable binary.
Which of the following contains application’s configuration files startup?
/etc : Contains Application’s configuration files, startup, shutdown, start, stop script for every individual program.
Which directory contains a file?
Files are organized by storing related files in the same directory. In a hierarchical file system (that is, one in which files and directories are organized in a manner that resembles a tree), a directory contained inside another directory is called a subdirectory.
What does cd stand for in terminal?
cd or change directory The cd command takes an argument, usually the name of the folder you want to move to, so the full command is cd your-directory . In the terminal, type: $ ls.
What does cd mean in Unix?
The cd command, also known as chdir (change directory), is a command-line shell command used to change the current working directory in various operating systems.
What is the difference between cd and cd?
The biggest difference between cd ~- and cd – is that ~- can be used in any command because it is part of the shells tilde expansion. The – shortcut can only be used with the cd command.
