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How to run sudo in background?
3 Answers. The problem is that the sudo command itself is being run in the background. As a result, it will be stopped (SIGSTOP) when it tries to access the standard input to read the password. A simple solution is to create a shell script to run synaptic & and then sudo the script in the foreground (i.e. without & ).
How do I run a Linux file in the background?
How to Start a Linux Process or Command in Background. If a process is already in execution, such as the tar command example below, simply press Ctrl+Z to stop it then enter the command bg to continue with its execution in the background as a job. You can view all your background jobs by typing jobs .
What does sudo do in shell?
The sudo command allows you to run programs with the security privileges of another user (by default, as the superuser). It prompts you for your personal password and confirms your request to execute a command by checking a file, called sudoers , which the system administrator configures.
What is Askpass helper?
If the -A (askpass) option is specified, a (possibly graphical) helper program is executed to read the user’s password and output the password to the standard output. If the SUDO_ASKPASS environment variable is set, it specifies the path to the helper program.
How to start a shell in the background?
As others have pointed out using Ctrl-Z while running a process in the foreground returns control to the shell. However, the process is placed in a stopped state at this point. The bg command will be needed to get the process running again but stay in background.
Is there a way to save password in Sudo?
You have different solutions to achieve this anyway: Run a sudo command before, sudo will save your password. Remove the &, give sudo the password, then send the process to background with CTRL + Z. Can also configure sudo to not ask the password for this specific user and executable couple.
What does Sudo do when no command is specified?
If a command is specified, it is passed to the shell for execution via the shell’s -c option. If no command is specified, an interactive shell is executed. sudo attempts to change to that user’s home directory before running the shell.
How to run Sudo as a user other than root?
The -u ( user) option causes sudo to run the specified command as a user other than root. To specify a uid instead of a user name, use #uid. When running commands as a uid, many shells require that the ‘#’ be escaped with a backslash (”). Security policies may restrict uid s to those listed in the password database.