, as shown below: echo 'test' | sudo tee /root/file.txt Conclusion # One solution is to invoke a new shell as root by using sudo sh -c: sudo sh -c 'echo 'test' > /root/file.txt'Īnother option is to pipe the output as a regular user to the tee command The redirection happens before the sudo command is invoked. This happens because the redirection “ >” of the output is performed under the user you are logged in, not the user specified with sudo. sudo echo 'test' > /root/file.txt bash: /root/file.txt: Permission denied If you try to redirect the output of a command to a file that your user has no write permissions, you will get a “Permission denied” error. The whoami command will print the name of the user running the command: richard In the following example, we are using sudo to run the whoami command as a user “richard”: sudo -u richard whoami The -u option allows you to run a command as a specified user. Actually, you can use sudo to run a command as any user. There is a wrong perception that sudo is used only to provide root permissions to a regular user. To allow a specific user to run only certain programs as sudo, instead of adding the user to the sudo group, add the users to the sudoers file.įor example, to allow the user linuxize to run only the mkdirĭefaults:user_name timestamp_timeout = 10 Run a Command as a User Other than Root # The initial user created by the Ubuntu installer is already a member of the sudo group, so if you are running Ubuntu, chances are that the user you are logged in as is already granted with sudo privileges. Is disabled by default for security reasons, and users are encouraged to perform system administrative tasks using sudo. On Debian, Ubuntu, and their derivatives, members of the group sudo are granted with sudo access: usermod -aG sudo username On RedHat based distributions such as CentOS and Fedora, the name of the sudo group is wheel. The name of the group may differ from distribution to distribution. Members of this group will be able to run any command as root. Install Sudo on Ubuntu and Debian # apt install sudo Install Sudo on CentOS and Fedora # yum install sudo Adding User to Sudoers #īy default, on most Linux distributions granting sudo access is as simple as adding the user to the sudo group defined in the sudoers file If sudo is not installed you can easily install it using the package manager of your distro. Otherwise, you will see something like sudo command not found. If you have sudo installed the system, will display a short help message. To check whether the sudo package is installed on your system, open up your console, type sudo, and press Enter. The sudo package is pre-installed on most Linux distributions.

Installing Sudo (sudo command not found) # In this tutorial, we will explain how to use the sudo command.

Using sudo instead of login in as root is more secure because you can grant limited administrative privileges to individual users without them knowing the root password. If you spend a lot of time on the command line, sudo is one of the commands that you will use quite frequently. $ sudo -u mysql - sh -c '/home/mysql/backup.sh /home/mysql/mirror.The sudo command allows you to run programs as another user, by default the root user. Sudo -i - sh -c 'command1 & command2 & command3' Sudo -u userNameHere - sh -c 'command1 command2' This quick tutorial shows you how to use sudo command to run multiple commands via a Linux or Unix shell. The sudo command used to execute a command as another user typically as a root user. How can I two commands in sudo ‘command1 & command2’? How do I run two commands from a bash shell? I need to run apt-get update and apt-get -y upgrade without typing sudo command two times from a command line on Ubuntu Linux AWS cloud server.

Bash sudo