aspell
Checks a file for spelling errors
bzip2
Compresses or decompresses files
cat
Joins and displays files
cmp
Compares two files
comm
Compares sorted files
cp
Copies files
cpio
Creates an archive or restores files from an archive
cut
Selects characters or fields from input lines
dd
Converts and copies a file
diff
Displays the differences between two files
find
Finds files based on criteria
fmt
Formats text very simply
gawk
Searches for and processes patterns in a file
grep
Searches for a pattern in files
gzip
Compresses or decompresses files
head
Displays the beginning of a file
less
Displays text files, one screen at a time
ln
Makes a link to a file
lpr
Sends files to printers
ls
Displays information about one or more files
ma
Displays documentation for commands
mkdir
Creates a directory
mv
Renames or moves a file
od
Dumps the contents of a file
paste
Joins corresponding lines from files
pr
Paginates files for printing
rm
Removes a file (deletes a link)
rmdir
Removes a directory
sed
Edits a file (not interactively)
sort
Sorts and/or merges files
split
Divides a file into sections
strings
Displays strings of printable characters
tail
Displays the last part (tail) of a file
tar
Stores or retrieves files to/from an archive file
touch
Changes a file's access and/or modification time
uniq
Displays unique lines
wc
Displays the number of lines, words, and bytes
Network Utilities
ftp
Transfers files over a network
rcp
Copies one or more files to or from a remote system
rlogin
Logs in on a remote system
rsh
Executes commands on a remote system
scp
Securely copies one or more files to or from a remote system
ssh
Securely executes commands on a remote system
telnet
Connects to a remote system over a network
Utilities That Display and Alter Status
cd
Changes to another working directory
chgrp
Changes the group associated with a file
chmod
Changes the access mode (permissions) of a file
chown
Changes the owner of a file and/or the group the file is associated with
date
Displays or sets the system time and date
df
Displays disk space usage
du
Displays information on disk usage by file
file
Displays the classification of a file
finger
Displays information about users
kill
Terminates a process by PID
killall
Terminates a process by name
nice
Changes the priority of a command
nohup
Runs a command that keeps running after you log out
ps
Displays process status
sleep
Creates a process that sleeps for a specified interval
stty
Displays or sets terminal parameters
top
Dynamically displays process status
umask
Establishes the file-creation permissions mask
w
Displays information about system users
which
Shows where in PATH a command is located
who
Displays information about logged-in users
Utilities That Are Programming Tools
configure
Configures source code automatically
gcc
Compiles C and C++ programs
make
Keeps a set of programs current
Miscellaneous Utilities
at
Executes commands at a specified time
cal
Displays a calendar
crontab
Maintains crontab files
echo
Displays a message
expr
Evaluates an expression
fsck
Checks and repairs a filesystem
mkfs
Creates a filesystem on a device
Mtools
Uses DOS-style commands on files and directories
tee
Copies standard input to standard output and one or more files
test
Evaluates an expression
TR
Replaces specified characters
tty
Displays the terminal pathname
tune2fs
Changes parameters on an ext2 or ext3 filesystem
xargs
Converts standard input into command lines
I triple checked this for typo's and corrected the ones I found, but please let me know if you find any I missed.
and thank you for flying Penguin Air.
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