Unix Command Summary
(click on command name for demo)
Command
|
Purpose
|
Informational
|
date
|
displays current date and time
|
history
|
displays previous commands you made
|
uname
|
displays system name
|
env
|
shows your environment settings
|
who
|
displays who is on the system
|
cal
|
displays calendar
|
clear
|
sets your Unix window with the prompt at the top and blank space below
|
bc
|
basic calculator (Control/D) to stop
|
quota
|
display your quota and usage
|
man
|
displays Unix manual page on command
|
whatis
|
displays short definition of command
|
Files and Directories
|
mkdir
|
make directory
|
cd
|
change directory
|
pwd
|
display present working directory
|
ls
|
list files in pwd
|
cat
|
display file contents
|
more
|
display file screenful at time
|
diff
|
compare file contents
|
touch
|
touch a file; create it if it doesn't exist
|
cp
|
copy file
|
mv
|
move file
|
rm
|
remove (delete) file
|
rmdir
|
remove (delete) directory
|
chmod
|
change access permissions
|
Text
|
vi
|
visual editor
|
spell
|
spell checker
|
ispell
|
interactive spell checker
|
wc
|
word, line, character count
|
Text Filtering
|
echo
|
echo input
|
grep
|
search for pattern in file
|
egrep
|
search for pattern in file using regular expressions
|
sort
|
display sorted content
|
sed
|
stream editor
|
awk
|
pattern scanning and processing language
|
Communication
|
mail
|
mail session
|
ftp
|
file transfer protocol
|
telnet
|
telnet to computer host
|
passwd
|
change your password
|