The nohup utility executes a command line such that the command keeps running after you log out. In other words, nohup causes a process to ignore a SIGHUP signal. Depending on how the local shell is configured, a process started without nohup and running in the background might be killed when you log out. Syntax […]
Archives for February 2019
What’s different between /bin/false and /sbin/nologin as nologin user’s shell
At times, we may need a user account with a password for authentication with a system, but do not require an interactive shell with that username. This helps in preventing the user account being used for logging in to the system with that password. In those scenarios, we can set the user’s shell to /sbin/nologin […]
What are the Types of DNS Servers
Types of DNS Servers DNS servers play a wide variety of roles—a single name server may be a master for some zones, a slave for others, and provide caching or forwarding services for still others. The role of the name server is controlled by its configuration file, which in the case of BIND is called […]
Linux OS Service ‘cups’
Description The Common UNIX Printing System (“CUPS”) is a cross-platform printing solution for all UNIX environments. It is based on the “Internet Printing Protocol” and provides complete printing services to most PostScript and raster printers. CUPS is a replacement for the LPD printing system. It replaces the lpr command with its own and the LPD […]