Unix Commands

script

command creating a file called "typescript"

finger

command displaying a list of user id's with names

more

command displaying large files only one screen at a time; followed by the name of the file

pwd

command displaying where you are currently at in the directory; command to print working directory

cat

command displaying your file on screen; follwed by the name of the file

who

command displays a list of user id's

./

command executing a program; followed by the executable with no space (note NO extension)

whoami

command giving your user id

ls -al

command listing all files including normally hidden files

man

command to bring up help on a certain command (pretty much a manual); followed by the name of the command you would like to understand

cd

command to change directory; followed by name of directory or subdirectory you'd like to go to

clear

command to clear the screen

pico

command to create a new file using pico text editor

ls -l

command to display a long listing

ls

command to display files and subdirectories in a directory; also known as "list command"

date

command to display the date

cd ..

command to go back one directory

exit

command to log off the server and exit putty

cp

command to make a copy of a file; followed first by the file being copied, second by the name of the copy

mkdir

command to make a new directory; followed by what you would like to name that directory

mv

command to rename or move a file; followed first by the file being renamed, second by the name you would like to change it to

gnatmake

command used to compile a program written in a file; followed by the file name. (in our class, the file ends in .adb, meaning it is an Ada program.) this command makes three new files ending in .ali, .o, and one without an extension called the executable.

rm

command used to delete file(s); followed by the name of the file being deleted

a2ps

command used to print a file in 214 Blackington; followed by the file name

CTRL X

keyboard command to save a pico text file and then exit the editor

CTRL O

keyboard command to save a pico text file while staying in the editor

pico +20 program.adb

Consider the command prompt notifies you that there is an error in line 20 of your program called "program.adb"; what command would you use to get there?

username

Application: Given that you are currently in directory cs410 of home/username/private/cs410, if you typed in the command "cd .." twice, what directory would you be in?

private

Application: Given that you are currently in directory cs410 of home/username/private/cs410, if you typed in the command "cd ..", what directory would you be in?

no

Are the commands 1 & 2 any different? (1) cd private cd cs410 (2) cd private/cs410

more sample.txt

If you wanted to display the contents of sample.txt only one page at a time, what command would you type?

cat sample.txt

If you wanted to display the contents of sample.txt, what command would you type?

man more

If you would like to understand the "more" command better, what command would type to find information?

./program

What command would you type to execute the program contained in program.adb, after completing the gnatmake command?

pwd and ls

What commands should you use when you don't know where you are at?

script; cat taxes.adb; gnatmake taxes.adb; ./taxes; exit

What series of command should you use to create a script file and record your session of a program called "taxes.adb"? (separate lines with semicolons.)