<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2008) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2008) (Learn how and when to remove this template message) </Td> </Tr> <P> In computing, help is a command in various command line shells such as COMMAND.COM, cmd. exe, Bash, 4DOS / 4NT, Windows PowerShell, Singularity shell, Python and GNU Octave . It provides online information about available commands and the shell environment . The command is also available in the DEC RT - 11 operating system . On Unix, the command is part of the Source Code Control System and prints help information for the SCCS commands . </P> <Ul> <Li> command This command - line argument specifies the name of the command about which information is to be displayed . </Li> </Ul>

Which command is used to get help about a command in linux