Korn Shell: Unix and Linux Programming Manual, Third Edition, The

Commands

:	null command; returns zero exit status
. file	read and execute commands in file
break	exit from current enclosing for, select, until, or while loop
break n	exit from nth enclosing for, select, until, or while loop
cd dir	change directory to dir(default $HOME)
cd dir1 dir2	change to directory where dir1 in current pathname is substituted with dir2
cd –	change directory to previous directory
echo args	display arguments
eval cmds	read and execute commands
exec I/O-redirection-command	perform I/O redirection on file descriptors
exec command	replace current process with command
exit	exit from current program with exit status of the last command. If given at command prompt, terminate the login shell.
exit n	exit from current program with ...