alias | allows you to set aliases and view the current aliases |
awk | search for a pattern within a file. |
badblocks | searches a device for bad blocks. |
bg | move a job running in the foreground to the background. |
bzip2 | used to compress and decompress files. Similar to gzip. |
cp | copy |
chattr | changes the attributes of a file or folder. |
chroot | change the root directory for a command. |
chmod | used to change permissions on a directory or file. |
chown | used to change the owner of a file or directory. |
chgrp | used to change the group a file belongs to. |
clear | clears the screen |
cpio | copies file. |
cat | displays the content of a file |
cd | changes directories. |
cron | used to execute commands at a certain time. |
crontab | allows you to view or edit the current cron jobs. |
date | prints current date to the screen |
du | lists disk usage in a directory. |
df | reports disk usage information. df -h |
edquota | sets quotas for specific users. |
env | lists current environment variables. |
fdisk | used to create/edit/delete partitions. |
fsck | checks a file system for consistency. |
fg | used to send jobs to the background. |
fuser | checks to see what processes and users have open files. |
find | searches for a file. |
free | will show total memory, used memory, and free memory. |
gpasswd | used to set a password for a group. |
grep | used to search through a file for a specified pattern. |
gunzip | uncompress files compressed by gzip. |
head | displays the first 10 lines of a file to the screen. |
hdparm | gets disk information. |
history | lists recently executed commands. |
host | used to get DNS info. |
id | display information about yourself or another user. |
jobs | used to show jobs running in the background. |
join | join lines of two sorted. |
kill | used to kill a process. |
killall | kill processes by command name. |
kernelcfg | a graphical application configures Linux. |
klogd | control which kernel messages. |
linuxconf | command line GUI which lets you configure your linux |
ls | displays a directories contents. |
ln | used to create hard and symbolic links. |
less | display the contents of a file |
ldd | shows what shared libraries a program is dependent on. |
ldconfig | used to configure/view shared libraries. |
last | lists logins and reboots. |
lastlog | print the last login times for system accounts. |
lsmod | lists loaded modules. |
lsattr | lists the attributes for a file or folder. |
mount | used by itself, reports the currently mounted files. |
modinfo | give info about the module. |
modprobe | queries modules. |
man | displays the Man page for a given command. |
mkdir | make directory |
mv | move/Rename |
merge | merge multiple files together. |
more | lets you page through text one screen full at a time. |
nice | used to set process priorities. |
nslookup | used to get DNS info from name servers. |
netstat | shows active sockets. |
ps | displays current processes |
ping | used to test connectivity between two hosts. |
pwd | present Working Directory |
rm | remove |
rmdir | remove directory |
rpcinfo | used to see what rpc services are available. |
route | used to view/change routes between you and other hosts. |
smbclient | used to connect to Windows shares or Samba. |
smbadduser | maps linux user names to Windows NT user names. |
smbpasswd | used to update the smbpasswd file with new accounts. |
set | used to read and write variables. |
setquota | used to set disk quotas. |
sort | sorts lines in a file by alphabetical order. |
su | change to Super User (root). |
shutdown | shutdown machine |
showmount | shows mount information for an NFS server. |
swapon | turns on the swapfile. |
swapoff | turns off the swapfile. |
testparm | used to troubleshoot Samba. |
tar | used to compress multiple files. |
tac | view a file from the last line up. |
touch | creates an empty file. |
tail | displays the last 10 lines of a file to the screen. |
tr | converts one set of characters to another. |
traceroute | used to track the path a packet takes to a host. |
top | shows information about the most CPU-intensive Apps. |
umount | removes a device from the filesystem. |
uname | determines OS name, version and machine name. |
vmstat | lists information on memory usage. |
whereis | finds documentation files. |
who | tells you who is logged into your server. |
whoami | tells you your user information. |
wc | print the number of bytes, words, and lines in files |
which | finds the full path for a command. |
zcat | read files that have been compressed with gzip. |