Shell Commands - Revision history

Paul: /* Networking */

2024-01-09T15:20:14Z

Networking

← Older revision		Revision as of 10:20, 9 January 2024
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	[http://www.cyberciti.biz/howto/question/man/tcpdump-man-page-with-examples.php tcpdump] man page with examples		[http://www.cyberciti.biz/howto/question/man/tcpdump-man-page-with-examples.php tcpdump] man page with examples

			<pre>sudo tcpdump -D (list interfaces)

			(end with Ctrl+C)

			-i (interface, use 'any' for all)

			-n (disable name resolution)
			-nn (disable name resolution and port resolution)

			-T radius
			-T vxlan

			-A (Print each packet (minus its link level header) in ASCII. Handy for capturing web pages.)

			-v (-vv or -vvv, verbose mode)

			udp

			sudo tcpdump -i <interface_name> udp and port <port #> -s0 -vv -X (what is S)

			-s (snaplen) Snarf snaplen bytes of data from each packet rather than the default of 262144 bytes.

			-X When parsing and printing, in addition to printing the headers of each packet, print the data of each packet (minus its link level header) in hex and ASCII. This is very handy for analysing new protocols. In the current implementation this flag may have the same effect as -XX if the packet is truncated.

			-XX When parsing and printing, in addition to printing the headers of each packet, print the data of each packet, including its link level header, in hex and ASCII.</pre>

			[https://www.commandlinefu.com/commands/view/4371/see-entire-packet-payload-using-tcpdump See entire packet payload using tcpdump]

	=== Firewall ===		=== Firewall ===

2018-12-15T05:00:05Z

Tape Archival (tar) & gzip

@@ Line 93: / Line 93: @@
 === un-TAR and decompress simultaneously ===
 <code>tar xvfz fileName.targz</code>
 == Download files ==

2016-07-02T07:22:28Z

Added sed

← Older revision		Revision as of 02:22, 2 July 2016
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	<pre>$ scp username@remote1.com:/remote/host/directory/example.txt \		<pre>$ scp username@remote1.com:/remote/host/directory/example.txt \
	username@remote2.com:/remote/host/directory/</pre>		username@remote2.com:/remote/host/directory/</pre>

			== sed ==

			Print text from line 1024 to line 1034 to console

			<code>sed -n 1024,1034p textFile</code>

			Store same text to file

			<code>sed -n 1024,1034p textFile > newTextFile</code>

2016-02-09T20:00:08Z

← Older revision		Revision as of 15:00, 9 February 2016
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	[http://www.cs.colostate.edu/helpdocs/vi.html vi text editor]		[http://www.cs.colostate.edu/helpdocs/vi.html vi text editor]

			== Secure Copy (SCP) ==

			Copy file "example.txt" from a remote host to local host

			<pre>$ scp username@remotehost.com:example.txt /local/host/directory</pre>

			Example copying remote file to local home directory:
			<pre>$ scp -p username@10.0.0.200:/home/username/pkginfo_160209.txt ~/
			Password:
			pkginfo_160209.txt 100% 101KB 101.0KB/s 00:00</pre>

			Copy file "example.txt" from local host to a remote host

			<pre>$ scp example.txt username@remotehost.com:/remote/host/directory</pre>

			Copy directory "dirLocal" from local host to remote host's directory "dirRemote"

			<pre>$ scp -r dirLocal username@remotehost.com:/remote/host/directory/dirRemote</pre>

			Copy file "example.txt" from remote host "remote1.com" to remote host "remote2.com"

			<pre>$ scp username@remote1.com:/remote/host/directory/example.txt \
			username@remote2.com:/remote/host/directory/</pre>


	== [http://www.gnu.org/software/tar/ Tape Archival (tar)] & [http://www.gzip.org/ gzip] ==		== [http://www.gnu.org/software/tar/ Tape Archival (tar)] & [http://www.gzip.org/ gzip] ==

2016-02-09T19:34:18Z

Useful sites

← Older revision		Revision as of 14:34, 9 February 2016
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	== Useful sites ==		== Useful sites ==

	/http://www.hypexr.org/linux_scp_help.php Linux SCP help]		[http://www.hypexr.org/linux_scp_help.php Linux SCP help]

	[http://www.commandlinefu.com/commands/browse Command Line Fu] as in Kung "Fu"		[http://www.commandlinefu.com/commands/browse Command Line Fu] as in Kung "Fu"

2016-02-09T19:34:01Z

Useful sites

← Older revision		Revision as of 14:34, 9 February 2016
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	== Useful sites ==		== Useful sites ==

			/http://www.hypexr.org/linux_scp_help.php Linux SCP help]

	[http://www.commandlinefu.com/commands/browse Command Line Fu] as in Kung "Fu"		[http://www.commandlinefu.com/commands/browse Command Line Fu] as in Kung "Fu"

2015-11-12T15:13:00Z

Tape Archival (tar) & gzip

← Older revision		Revision as of 10:13, 12 November 2015
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	<code>gzip -d filename</code>		<code>gzip -d filename</code>

	=== TAR and ~~Compress Simultaneously~~ ===		=== TAR and compress simultaneously ===

	<code>tar -cvzf newFileName.tar.gz fileOrDirectorToArchiveAndCompress</code>		<code>tar -cvzf newFileName.tar.gz fileOrDirectorToArchiveAndCompress</code>

	=== un-TAR and ~~Compress Simultaneously~~ ===		=== un-TAR and decompress simultaneously ===
	<code>tar xvfz fileName.targz</code>		<code>tar xvfz fileName.targz</code>

2014-11-06T15:30:04Z

Tar and Compress Simultaneously

← Older revision		Revision as of 10:30, 6 November 2014
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	<code>gzip -d filename</code>		<code>gzip -d filename</code>

	=== ~~Tar~~ and Compress Simultaneously ===		=== TAR and Compress Simultaneously ===

	<code>tar -cvzf newFileName.tar.gz fileOrDirectorToArchiveAndCompress</code>		<code>tar -cvzf newFileName.tar.gz fileOrDirectorToArchiveAndCompress</code>

			=== un-TAR and Compress Simultaneously ===
			<code>tar xvfz fileName.targz</code>

	== Download files ==		== Download files ==

2014-03-05T15:39:31Z

← Older revision		Revision as of 10:39, 5 March 2014
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	[http://www.cs.colostate.edu/helpdocs/vi.html vi text editor]		[http://www.cs.colostate.edu/helpdocs/vi.html vi text editor]

	== [http://www.gnu.org/software/tar/ Tape Archival (tar)] ==		== [http://www.gnu.org/software/tar/ Tape Archival (tar)] & [http://www.gzip.org/ gzip] ==

	=== Create tar ===		=== Create tar ===
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	<code>tar -tvf filename.tar</code>		<code>tar -tvf filename.tar</code>

	~~== [http://www.gzip.org/ gzip] ==~~

	=== Compress file ===		=== Compress file ===
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	<code>gzip -d filename</code>		<code>gzip -d filename</code>

			=== Tar and Compress Simultaneously ===

			<code>tar -cvzf newFileName.tar.gz fileOrDirectorToArchiveAndCompress</code>

	== Download files ==		== Download files ==

2012-03-08T04:29:39Z

Check file integrity

← Older revision		Revision as of 23:29, 7 March 2012
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	=== Check file integrity ===		=== Check file integrity ===

	Check MD5 checksum by using <code>md5sum filename</code> then compare.		Check MD5 checksum by using <code>md5sum filename</code> then compare checksum.

			Check SHA1 checksum by using <code>sha1sum filename</code> then compare checksum.

	== ifconfig ==		== ifconfig ==