The following table describes some common Unix commands and features of the Korn (ksh) used on bgresearch.
| Command or feature |
ksh (on bgresearch) |
| Commands executed when logging in |
.profile
|
| Commands executed with each process |
.kshrc |
| Display the contents of a file on the screen |
cat |
| Return to the login directory |
cd |
| Change default directory to directory-name |
cd directory-name |
| Clear the terminal screen |
clear |
| Copy file source to dest |
cp source dest |
| Interrupt the execution of the current program |
[Control]-c |
| Log off the system |
exit or [Control]-d |
| List files waiting to be printed |
lpq |
| Send a file to the printer |
cslpr filename |
| Lists the files in the current directory |
ls |
| Lists the files in the current directory, with more info. |
ls -l |
| Create a subdirectory called dir-name |
mkdir dir-name |
| Display information about a unix command |
man command |
| View a file one page at a time |
more filename |
| Rename a file |
mv old-name new-name |
| Change your password |
passwd |
| Save a session in a photo file |
photo log-file-name |
| Create or edit a file |
vi filename or
pico filename |
| Display the current default directory |
pwd |
| Delete (remove) a file |
rm filename |
| Delete (remove) an empty directory |
rmdir dirname |
| Redirect standard output to a file |
command > file |
| Redirect standard output and errors to a file |
command > file 2>&1
|
| Create an alias |
alias m='more'
|
| Remove an alias |
unalias m |
| List command history |
history |
| Reexecute the previous command |
r |
| Reexecute the previous command changing ab to xy |
r ab=xy |
| Reexecute the fifth command in the history list |
r 5 |
| Reexecute the last command that started with vi |
r vi |
| Define a function |
function fun {
commands
}
|
| Execute a function |
fun |
| Delete a function |
unset -f fun |
| Represents home directory of current user |
~ |
| Represents home directory of user jsmith |
~jsmith |
| Represents current working directory |
. (period) or ~+
|
| Represents previous working directory |
~- |
| Compile a C++ program |
g++ prog.cpp |
| Compile a C++ program for use with debugger |
g++ -g prog.cpp |
| Complete a partial filename |
Press [Esc] then \ |
To set your bgunix prompt to be the current working directory, add the following line to $HOME/.profile : export PS1='$PWD>'
