C-shell

Features available in this shell

("STOP              : to exit from shell")
("HISTORY BRIEF     : to get command list without arguments ")
("HISTORY FULL      : to get history of commands with arguments")
("EXEC <command>    : to execute command");
("EXEC <command-index-number>   :to execute command with given index-number ");
("HISTn             : prints last n commands from history")
("!HISTn            : run last nth command from history")
("<command>&        : to run process in background")
("pid               : to get pid of shell")
("pid current       : to get list of the pids of the processes that are currently active")
("pid all           : prints the list of pids of all commands that were executed so far by the shell (including the currently executing processes)")