Showing posts with label commands. Show all posts
Showing posts with label commands. Show all posts

Friday, August 28, 2015

some useful linux commands and their full forms

ACL                            Access control list.
awk                             Aho, Weinberger, and Kernighan.
BIOS                          basic input output system.
cd                               change Directory.
chmod                        change mode.
chown                        change owner.
CIFS                          common Internet File System
df                                disk free.
DHCP                        Dynamic Host Configuration Protocol.
DNS                           Domain Name System.
du                              disk usage.
ext2                            second extended file system.
ext3                            third extended file system.
ext4                            fourth extended file system.
fdisk                           fixed disk.
FTP                            File Transfer Protocol.
grep                            Global  regular expression print.
GRUB                        Grand unified Bootloader.
http                            HyperText Transfer Protocol.
ifconfig                       Interface Configuration.
IMAP                         Internet Message Access Protocol.
KVM                          Kernel Virtual Machine.
LVM                          logical volume manager.
MBR                          Master Boot Record.
mkfs                           make filesystem.
NFS                            Network file system
pop                             Post Office Protocol.
ps                                process status.
pwd                            present working directory.
rm                              remove.
RPM                          Redhat package Manger.
scp                              secure copy.
sed                              Stream Editor.
SGID                          set group id.
SMB                           Server Message Block
ssh                              Secure Shell.
su                               substitute user or switch user.
sudo                           substitute user do or super user do .
SUID                          set user id .
tar                              tape archive.
TFTP                         Trivial File Transfer Protocol.
umask                        User's File Creation Mask.
Vim                            Visual Improved
VSFTP                       very secure  File Transfer Protocol.
YUM                          Yellowdog updater modified.

Friday, April 10, 2015

Linux Command That Can Be Used To View System Info



1. arch
This command will show you the architecture of your system.
2. uname -m
This is another command to view the architecture of the system.
3. uname -r
This command is used to check the kernel version that is being used in the system.
4. dmidecode -q
This command give you the hardware components in your system.
5. hdparm-i /dev/hda
This is the command that shows the characteristics of your hard disk.
6. hdparm-tT /dev/sda
This command is used in order to conduct tests readings on hard drives.
7. cat /proc/cpuinfo
These commands can help you in getting CPU information.
8. cat / proc / interrupts
These commands are used to interrupt a process.
9. cat /proc/meminfo
This command verifies the memory usage in your system.
10. cat /proc/swaps
These commands are used in order to swap files.
11. cat /proc/version
These three commands can display the kernel version for your system.
12. cat /proc/net/dev
These four commands are used to view the network adapters and display statistics of the system.
13. cat /proc/mounts
This command shows you the mounted file system.
14. lspci-tv
If you need to view the PCI display devices then this is the command to use.
15. lsusb-tv
This is the command for displaying USB devices.

Friday, April 3, 2015

Linux Network Management


Names

dnsdomainname

Show the systems DNS domain name
domainname

Show or set the systems domain name
hostname

Used to show or set the name of your machine for networking
nisdomainname

Show or set systems NIS/YP domain name
nodename

Show or set the systems DECnet node name
ypdomainname

Show or set the system's NIS/YP domain name
Network setup and commands
arp

This program lets the user read or modify their arp cache.
dig(1)

Send domain name query packets to name servers for debugging or testing.
finger

Display information about the system users.
ftp

File transfer program.
ifconfig

Configure a network interface.
ifdown

Shutdown a network interface.
ifup

Brings a network interface up. Ex: ifup eth0
ipchains

IP firewall administration used to set input, forward, and output rules.
netconf

A GUI interactive program to let you configure a network on Redhat systems.
netconfig

Another GUI step by step network configuration program.
netstat

Displays information about the systems network connections, including port connections, routing tables, and more. The command "netstar -r" will display the routing table.
nslookup

Used to query DNS servers for information about hosts.
pftp

Same as ftp.
ping

Send ICMP ECHO_REQUEST packets to network hosts.
portmap

DARPA port to RPC program number mapper. Must be running to make RPC calls.
rarp

Manipulate the system's RARP table.
rcp

Remote file copy. Copies files between two machines.
rexec

Remote execution client for an exec server. The host uses the rexecd server.
ripquery

Query RIP gateways. Request all routes known by an RIP gateway by sending an RIP request.
rlogin

Starts a terminal session on a remote host.
route

Show or manipulate the IP routing table.
rsh

Executes command on remote host.
rup

Displays summary of current system status of a remote host or all hosts on the network.
ruptime

Show host status of local machines.
rwhod

System status server, maintains database used by rwho and ruptime.
showmount

Show mount information for an NFS server.
tcpd

Access control facility for internet services. Can be set up to monitor requests for Telnet, finger, ftp, exec, rsh, rlogin, tftp, talk, comsat. It filters access for these requests.
tcpdchk

Tcp wrapper configuration checker.
tcpdump

Dump traffic on a network. Prints out headers of packets that match the boolean expression.
tcpdmatch

Predicts how the tcp wrapper will handle a specific request for a service.
Telnet

User interface to the TELNET protocol, setting up a remote console session.
traceroute

Print the route that packets take to the specified network host.
ipx_configure

Tool to setup Netware access.
ncpmount

Netware filesystem mounting program.
nprint

Novell print command.
pqlist

Netware printer list for a given server.
pserver

Netware print server.
slist

Netware server list.


Communications commands (includes mail)
biff

Notifies the system if mail arrives and who it is from.
comsat

Biff server to receive reports of incoming mail.
expire

Used to purge old news articles.
elm

Electronic mail.
ftp

File transfer protocol.
mailx

Berkley mail program.
metasend

Interface for sending non-text mail.
nn

Net news.
pine

Program for internet news and e-mail, Can send documents, graphics, local & remote messages.
sendmail

A popular Unix, Linux mail message transfer agent.
smail

A popular mail message transfer agent which is easier to set up than sendmail.
talk

Lets two parties talk simultaneously.
telnet

Allows a user to have a login session across a network on a remote host.
tin

Net news reader.
write

Allows users to directly interact with other users via terminal number (one way at a time).