Linux-Commands - Revision history

Olimex at 17:53, 31 March 2014

2014-03-31T17:53:44Z

Olimex: /* Directory */

2014-03-31T17:52:35Z

‎Directory

Olimex: /* Disk Usage */

2014-03-31T17:50:48Z

‎Disk Usage

Olimex: /* File transfer */

2014-03-31T17:46:01Z

‎File transfer

Olimex: /* Login (ssh and telnet) */

2014-03-31T17:42:37Z

‎Login (ssh and telnet)

Olimex: /* Search */

2014-03-31T17:36:01Z

‎Search

Olimex: /* Install Package */

2014-03-31T17:33:03Z

‎Install Package

Olimex: /* Compression / Archives */

2014-03-31T17:26:01Z

‎Compression / Archives

Olimex: /* Network */

2014-03-31T17:23:11Z

‎Network

Olimex: /* File Permission Related */

2014-03-31T17:06:19Z

‎File Permission Related

← Older revision		Revision as of 17:53, 31 March 2014
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	'''Alt+PrintScr''' - takes screenshot of windows		'''Alt+PrintScr''' - takes screenshot of windows
	'''Shift+PrintScr''' - takes screenshot of selected window area		'''Shift+PrintScr''' - takes screenshot of selected window area
		+
		+
		+
		+
		+	[[Category:Products]]

← Older revision		Revision as of 17:52, 31 March 2014
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	===Directory===		===Directory===
		+
		+	'''$ cd .'''. - go up one level of the directory tree
		+	'''$ cd''' - go to $HOME directory
		+	'''$ cd /test''' - change to /test directory

	===Keyboard shortcuts===		===Keyboard shortcuts===

← Older revision		Revision as of 17:50, 31 March 2014
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	===Disk Usage===		===Disk Usage===
		+
		+	'''$ df –h''' - show free space on mounted filesystems
		+	'''$ df -i''' - show free inodes on mounted filesystems
		+	'''$ fdisk -l''' - show disks partitions sizes and types
		+	'''$ du -ah''' - display disk usage in human readable form
		+	'''$ findmnt''' - displays target mount point for all filesystem
		+	'''$ mount device-path mount-point''' - mount a device

	===Directory===		===Directory===

← Older revision		Revision as of 17:46, 31 March 2014
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	===File transfer===		===File transfer===
		+
		+	scp
		+	'''$ scp file.txt server2:/tmp''' - secure copy file.txt to remote host /tmp folder
		+	'''$ scp gordon@server2:/www/.html /www/tmp''' - copy .html files from remote host to current system /www/tmp folder
		+	$ '''scp -r gordon@server2:/www /www/tmp''' - copy all files and folders recursively from remote server to the current system /www/tmp folder
		+
		+	rsync
		+	'''$ rsync -a /home/apps /backup/''' - synchronize source to destination
		+	'''$ rsync -avz /home/apps gordon@192.168.10.1:/backup''' - synchronize files/directories between the local and remote system with compression enabled

	===Disk Usage===		===Disk Usage===

← Older revision		Revision as of 17:42, 31 March 2014
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	===Login (ssh and telnet)===		===Login (ssh and telnet)===
		+
		+	'''$ ssh user@host''' - connect to host as user
		+	'''$ ssh -p port user@host''' - connect to host using specific port
		+	'''$ telnet host''' - connect to the system using telnet port

	===File transfer===		===File transfer===

← Older revision		Revision as of 17:36, 31 March 2014
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	===Search===		===Search===
		+
		+	'''$ grep pattern files''' - search for pattern in files
		+	'''$ grep -r pattern dir''' - search recursively for pattern in dir
		+	'''$ locate file''' - find all instances of file
		+	'''$ find /home/tom -name 'index*'''' - find files names that start with "index"
		+	'''$ find /home -size +10000k''' - find files larger than 10000k in /home

	===Login (ssh and telnet)===		===Login (ssh and telnet)===

← Older revision		Revision as of 17:33, 31 March 2014
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	===Install Package===		===Install Package===
		+
		+	'''$ rpm -i pkgname.rpm''' - install rpm based package
		+	'''$ rpm -e pkgname''' - remove package
		+
		+	Install from source
		+	$ ./configure
		+	$ make
		+	$ make install
		+
		+	'''$ apt-get update''' - re-synchronize the package index files from their sources
		+	'''$ apt-get upgrade''' - install the newest versions of all packages currently installed on the system from the sources
		+	'''$ apt-get install package''' - install package
		+	'''$ apt-get remove package''' - remove package
		+	'''$ apt-cache search package''' - search for package

	===Search===		===Search===

← Older revision		Revision as of 17:26, 31 March 2014
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	===Compression / Archives===		===Compression / Archives===
		+
		+	'''$ tar cf test.tar test''' - create tar named test.tar containing test/
		+	'''$ tar xf test.tar''' - extract the files from test.tar
		+	'''$ tar czf test.tar.gz test''' - create a tar with gzip compression
		+	'''$ gzip test''' - compress file and renames it to test.gz

	===Install Package===		===Install Package===

← Older revision		Revision as of 17:23, 31 March 2014
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	===Network===		===Network===
		+
		+	'''$ ifconfig –a''' - display all network ports and ip address
		+	'''$ ifconfig eth1 mtu 9000 up''' - set mtu to 9000
		+	'''$ ifconfig eth0''' - display specific ethernet port ip address and details
		+	'''$ ifconfig -a \| grep HWaddr''' - display MAC address
		+
		+	change MAC address:
		+	# ifconfig eth0 down
		+	# ifconfig eth0 hw ether 00:80:48:BA:d1:30
		+	# ifconfig eth0 up
		+
		+	'''$ ip addr show''' - display all network interfaces and ip address (available in iproute2 package,powerful than ifconfig)
		+	'''$ ip address add 192.168.0.1 dev eth0''' - set ip address
		+	'''$ ethtool eth0''' - linux tool to show ethernet status (set full duplex , pause parameter)
		+	'''$ mii-tool eth0''' - linux tool to show ethernet status (more or like ethtool)
		+	'''$ ping host''' - send echo request to test connection (learn sing enhanced ping tool)
		+	'''$ whois domain''' - get who is information for domain
		+	'''$ dig domain''' - get DNS information for domain (screenshots with other available parameters)
		+	'''$ dig -x host''' - reverse lookup host
		+	'''$ host google.com''' - lookup DNS ip address for the name
		+	'''$ hostname –i''' - lookup local ip address (set hostname too)
		+	'''$ wget file''' - download file (very useful other option)
		+	'''$ netstat -tupl''' - listing all active listening ports(tcp,udp,pid)
		+
		+	WiFi related:
		+	'''$ iwconfig wlan0 essid "mynetworkESSID"''' - specify ESSID for the WLAN
		+	'''$ dhclient wlan0''' - to receive an IP address, netmask, DNS server and default gateway from the Access Point
		+	'''$ iwconfig wlan0 mode managed key [WEP key]''' - 128 bit WEP use 26 hex characters, 64 bit WEP uses 10
		+	'''$ iwconfig wlan0 mode master''' - set the card to act as an access point mode
		+	'''$ iwconfig wlan0 mode managed''' - set card to client mode on a network with an access point
		+	'''$ iwconfig wlan0 mode ad-hoc''' - set card to peer to peer networking or no access point mode
		+	'''$ iwconfig wlan0 mode monitor''' - set card to RFMON mode
		+	'''$ iwconfig wlan0 essid any''' - with some cards you may disable the ESSID checking
		+	'''$ iwconfig wlan0 key 1111-1111-1111-1111''' - set 128 bit WEP key
		+	'''$ iwconfig wlan0 key off''' - disable WEP key
		+	'''$ iwconfig wlan0 key open''' - sets open mode, no authentication is used and card may accept non-encrypted sessions
		+	'''$ iwlist wlan0 scan''' - give the list of Access Points and Ad-Hoc cells in range (ESSID, Quality, Frequency, Mode etc.)
		+	'''$ iwlist wlan0 power''' - list the various Power Management attributes and modes of the device
		+	'''$ iwlist wlan0 txpower''' - list the various Transmit Power available on the device
		+	'''$ iwlist wlan0 retry''' - list the transmit retry limits and retry lifetime on the device

	===Compression / Archives===		===Compression / Archives===

← Older revision		Revision as of 17:06, 31 March 2014
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	===File Permission Related===		===File Permission Related===
		+
		+	'''$ chmod octal file-name''' - change the permissions of file to octal , which can be found separately for user, group and world; octal value 4 -read 2 –write 1 –execute
		+	'''$ chown owner-user file''' - change owner of the file
		+	'''$ chown owner-user:owner-group file-name''' - change owner and group owner of the file
		+	'''$ chown owner-user:owner-group directory''' - change owner and group owner of the directory

	===Network===		===Network===