Command Description cd d Change to directory d mkdir d Create new directory d rmdir d Remove directory d mv f1 [f2...] d Move file f to directory d mv d1 d2 Rename directory d1 as d2 passwd Change password alias name1 name2 Create command alias (csh/tcsh) alias name1="name2" Create command alias (ksh/bash) unalias name1[na2...] Remove command alias na ssh nd Login securely to remote node exit End terminal session setenv name v Set env var to value v (csh/tcsh) export name="v" set environment variable to value v (ksh/bash)
Output, Communication, & Help
Command Description lpr -P printer f or lp -d printer f Output file f to line printer script [f] Save terminal session to f exit Stop saving terminal session mailx username Send mail to user man name Unix manual entry for name
Command Description CTRL/c * Interrupt processes CTRL/s * Stop screen scrolling CTRL/q * Resume screen output sleep n Sleep for n seconds jobs Print list of jobs kill % Kill job n ps Print process status stats kill -9 n Remove process n CTRL/z * Suspend current process stop %n Suspend background job n cmmd& Run cmmd in background bg [%n] Resume background job n fg [%n] Resume foreground job n exit Exit from shell
Command Description ls [d] [f...] List files in directory ls -1 [f...] List files in detail alias [name] Display command aliases printenv [name] Print environment values quota Display disk quota date Print date & time who List logged in users whoami Display current user finger [username] Output user information chfn Change finger information pwd Print working directory history Display recent commands ! n Submit recent command n
Command Description vi [f] Vi fullscreen editor emacs [f] Emacs fullscreen editor ed [f] Text editor wc f Line, word, & char count cat f List contents of file more f List file contents by screen cat f1 f2 >f3 Concatenates f1 & f2 into f3 chmod mode f Change protection mode of f cmp f1 f2 Compare two files cp f1 f2 Copy file f1 into f2 sort f Alphabetically sort f split [-n] f Split f into n-line pieces mv f1 f2 Rename file f1 as f2 rm f Delete (remove) file f grep 'ptn' f Outputs lines that match ptn diff f1 f2 Lists file differences head f Output beginning of f tail f Output end of f
Command Description cc [-o f1] f2 C compiler lint f Check C code for errors f77 [-o f1] f2 Fortran77 compiler pc [-o f1] f2 Pascal compiler
Working with NFS files
Files saved on the UITS central Unix computers Steel, the Parallel PC cluster, Solar/Lunar, and the Research SP are stored on the Network File Server (NFS). That means that your files are really on one disk, in directories named for the central Unix hosts on which you have accounts.
No matter which of these computers you are logged into, you can get to your files on any of the others. Here are the commands to use to get to any system directory from any other system:
cd /N/u/username/PPPC/ cd /N/u/username/Cobalt/ cd /N/u/username/Solar/ cd /N/u/username/Steel/ cd /n/u/username/SP/
Be sure you use the capitalization just as you see above, and substitute your own username for "username".
For example, if Jessica Rabbit is logged into her account on Steel, and wants to get a file on her SP account, she would enter:
Now when she lists her files, she'll see her SP files, even though she's actually logged into Steel.
You can use the ordinary Unix commands to move files, copy files, or make symbolic links between files. For example, if Jessica Rabbit wanted to move "file1" from her Steel directory to her SP directory, she would enter:
mv -i /N/u/jrabbit/Steel/file1 /N/u/jrabbit/SP/
This shared file system means that you can access, for example, your SP files even when you are logged into Steel, and vice versa. However, if you are logged into the SP, you can only use the software installed on SP -- only users' directories are linked together, not system directories.
Abbreviations used in this document
CTRL/x hold down control key and press x d directory env environment f filename n number nd computer node prtr printer ptn pattern var variable [y/n] yes or no  optional arg ... list
Terms & Conditions