Where do I find the command file for CSH?
An instance of csh begins by executing commands from the file /etc/csh.cshrc and, if this is a login shell, /etc/csh.login. It then executes commands from .cshrc in the home directory of the invoker, and, if this is a login shell, the file .login in the same location.
What is the PATH variable in csh / tcsh?
The PATH is an environment variable. It is a colon delimited list of directories that your shell searches through when you enter a command. All executables are kept in different directories on the Linux and Unix like operating systems. A search path is the sequence of directories in which the c shell (CSH/TCSH) looks for commands to execute.
How are commands parsed and executed in csh?
Commands are parsed, but not executed. This is useful for checking the syntax of shell scripts. When used interactively, the shell can be terminated by pressing control-D ( end-of-file character), since exit will not work. Command input is taken from the standard input. A single line of input is read and executed.
How is CSH used as a command language interpreter?
csh is a command language interpreter with many powerful features, including a history mechanism (see History substitutions), job control facilities (see Jobs), interactive file name and username completion (see File Name Completion), and a C-like syntax. It is used both as an interactive login shell and a shell script command processor.
What are the word designators in Linux csh?
The basic word designators are: 0 first (command) word n n th argument ^ first argument; i.e., ‘1’ $ last argument % word matched by (immediately preceding)
Where does the logout command in csh go?
Finally each command in the current line is executed. When a login shell terminates it executes commands from the files .logout in the user’s home directory and /etc/csh.logout.