Users Guide

UNIX Utility Function
cat
Concatenate and print les.
chmod
Change le modes.
chown
Change le owner and group.
cksum
Display le checksums and block counts.
cut
Select portions of each line of a le.
date
Display or set date and time.
dd
Convert and copy a le.
df
Display free disk space.
env
Set and print environment.
expr
Evaluate expression.
fc
List the history of commands on the computer.
fg
Change the background process to the foreground process.
file
Determine the le type.
find
Walk a le hierarchy.
ftp
Internet le transfer program.
getopts
Called each time you process an argument.
grep
Print lines matching a pattern.
hostname
Set or print the name of the current host system.
ifconfig
Congure network interface parameters.
iostat
Report I/O statistics.
ln
Make links.
ls
List directory contents.
md5
Calculates and veries 128-bit MD5 hashes.
more
Filter for browsing text les.
netstat
Show the network status
nice
Execute a utility with an altered scheduling priority.
nohup
Invoke a command immune to hangups.
paste
Join les horizontally.
ping
Send ICMP ECHO_REQUEST packets to the network hosts.
ps
Process status.
pwd
Return working directory name.
sed
Stream editor.
sleep
Suspend execution for an interval of time.
sort
Sort or merge text les.
ssh
Open the SSH client (remote login program).
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