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	<title>Linux 101 Hacks &#187; 04. Essential Linux Commands</title>
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	<link>http://linux.101hacks.com</link>
	<description>Free eBook to Build a Strong Foundation in UNIX / Linux</description>
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		<title>Hack 28. Display total connect time of users</title>
		<link>http://linux.101hacks.com/linux-commands/ac-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/ac-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:52:54 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=125</guid>
		<description><![CDATA[Ac command will display the statistics about the user’s connect time. Connect time for the current logged in user With the option –d, it will break down the output for the individual days. In this example, I’ve been logged in to the system for more than 6 hours today. On Dec 1st, I was logged [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 27. Diff Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/diff-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/diff-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:48:40 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=121</guid>
		<description><![CDATA[diff command compares two different files and reports the difference. The output is very cryptic and not straight forward to read. Syntax: diff [options] file1 file2 What was modified in my new file when compare to my old file? The option -w in the diff command will ignore the white space while performing the comparison. [...]]]></description>
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		<slash:comments>1</slash:comments>
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		<title>Hack 26. Stat Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/stat-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/stat-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:46:54 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=118</guid>
		<description><![CDATA[Stat command can be used either to check the status/properties of a single file or the filesystem. Display statistics of a file or directory. $ stat /etc/my.cnf File: `/etc/my.cnf' Size: 346 Blocks: 16 IO Block: 4096 regular file Device: 801h/2049d Inode: 279856 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 25. Cut Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/cut-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/cut-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:45:02 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=115</guid>
		<description><![CDATA[Cut command can be used to display only specific columns from a text file or other command outputs. Following are some of the examples. Display the 1st field (employee name) from a colon delimited file $ cut -d: -f 1 names.txt Emma Thomas Alex Jason Madison Randy Sanjay Gupta Nisha Singh Display 1st and 3rd [...]]]></description>
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		<slash:comments>1</slash:comments>
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		<title>Hack 24. Uniq Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/uniq-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/uniq-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:41:58 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=112</guid>
		<description><![CDATA[Uniq command is mostly used in combination with sort command, as uniq removes duplicates only from a sorted file. i.e In order for uniq to work, all the duplicate entries should be in the adjacent lines. Following are some common examples. 1. Remove Duplicates from a file using uniq command When you have an employee [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 23. Sort Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/sort-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/sort-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:38:27 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=107</guid>
		<description><![CDATA[Sort command sorts the lines of a text file. Following are several practical examples on how to use the sort command based on the following sample text file that has employee information in the format: employee_name:employee_id:department_name. $ cat names.txt Emma Thomas:100:Marketing Alex Jason:200:Sales Madison Randy:300:Product Development Sanjay Gupta:400:Support Nisha Singh:500:Sales Sort a text file in [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 22. Xargs Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/xargs-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/xargs-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:34:40 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=104</guid>
		<description><![CDATA[xargs is a very powerful command that takes output of a command and pass it as argument of another command. Following are some practical examples on how to use xargs effectively. Xargs Example 1: When you are trying to delete too many files using rm, you may get error message: /bin/rm Argument list too long [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 21. Change the Case Using tr Command</title>
		<link>http://linux.101hacks.com/linux-commands/tr-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/tr-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:31:54 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=101</guid>
		<description><![CDATA[Convert a file to all upper-case using tr command as shown below. $ cat employee.txt 100 Jason Smith 200 John Doe 300 Sanjay Gupta 400 Ashok Sharma $ tr a-z A-Z < employee.txt 100 JASON SMITH 200 JOHN DOE 300 SANJAY GUPTA 400 ASHOK SHARMA]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Hack 20. Join Command Examples</title>
		<link>http://linux.101hacks.com/linux-commands/join-command-examples/</link>
		<comments>http://linux.101hacks.com/linux-commands/join-command-examples/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:30:14 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=98</guid>
		<description><![CDATA[Join command combines lines from two files based on a common field. In the example below, we have two files – employee.txt and salary.txt. Both have employee-id as common field. So, we can use join command to combine the data from these two files using employee-id as shown below. $ cat employee.txt 100 Jason Smith [...]]]></description>
		<wfw:commentRss>http://linux.101hacks.com/linux-commands/join-command-examples/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Hack 19. Suppress Standard Output and Error Message</title>
		<link>http://linux.101hacks.com/linux-commands/suppress-standard-output-and-error/</link>
		<comments>http://linux.101hacks.com/linux-commands/suppress-standard-output-and-error/#comments</comments>
		<pubDate>Tue, 29 Dec 2009 01:28:47 +0000</pubDate>
		<dc:creator>Ramesh</dc:creator>
				<category><![CDATA[04. Essential Linux Commands]]></category>

		<guid isPermaLink="false">http://linux.101hacks.com/?p=95</guid>
		<description><![CDATA[Sometime while debugging a shell script, you may not want to see either the standard output or standard error message. Use /dev/null as shown below for suppressing the output. Suppress standard output using > /dev/null This will be very helpful when you are debugging shell scripts, where you don’t want to display the echo statement [...]]]></description>
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