Sed - Revision history

Goldbolt: /* Using sed */

2019-12-18T19:19:05Z

‎Using sed

Goldbolt: /* Using sed */

2019-04-16T19:51:48Z

‎Using sed

Goldbolt: /* Using sed */

2019-04-16T19:46:15Z

‎Using sed

Goldbolt at 19:44, 16 April 2019

2019-04-16T19:44:04Z

Goldbolt at 19:25, 16 April 2019

2019-04-16T19:25:46Z

Goldbolt: Created page with "{{DISPLAYTITLE:''sed''}} sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While i..."

2019-04-16T19:25:14Z

Created page with "{{DISPLAYTITLE:''sed''}} sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While i..."

New page

{{DISPLAYTITLE:''sed''}} sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it from other types of editors.

← Older revision		Revision as of 19:19, 18 December 2019
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	If a line contains baz, substitute foo with bar		If a line contains baz, substitute foo with bar
	sed '/baz/s/foo/bar/g' file.txt		sed '/baz/s/foo/bar/g' file.txt
		+
		+	Remove ":" from end of a line:
		+	sed 's/:$//'

← Older revision		Revision as of 19:51, 16 April 2019
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	This will append "BAR" to the end of every line in testfile3 and output to file testfile4		This will append "BAR" to the end of every line in testfile3 and output to file testfile4
	sed 's/$/"BAR/' testfile3 > testfile4		sed 's/$/"BAR/' testfile3 > testfile4
		+
		+	Show only lines 12-18 of file.txt
		+	sed -n 12,18p file.txt
		+
		+	Show all of file.txt except for lines from 12 to 18
		+	sed 12,18d file.txt
		+
		+	Double-space file.txt
		+	sed G file.txt
		+
		+	Print only lines with three consecutive digits
		+	sed '/[0-9]\{3\}/p' file.txt
		+
		+	Delete all spaces in front of every line of file.txt
		+	sed 's/^[ ^t]*//' file.txt
		+
		+	Delete all spaces at the end of every line of file.txt
		+	sed 's/[ ^t]*$//' file.txt
		+
		+	Delete all spaces in front and at the end of every line of file.txt
		+	sed 's/^[ ^t]//;s/[ ^]$//' file.txt
		+
		+	If a line contains baz, substitute foo with bar
		+	sed '/baz/s/foo/bar/g' file.txt

← Older revision		Revision as of 19:46, 16 April 2019
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	This will remove empty spaces from FILENAME.		This will remove empty spaces from FILENAME.
	cat FILENAME \| sed '/^$/d;s/[[:blank:]]//g'		cat FILENAME \| sed '/^$/d;s/[[:blank:]]//g'
		+
		+	This will append "BAR" to the end of every line in testfile3 and output to file testfile4
		+	sed 's/$/"BAR/' testfile3 > testfile4

← Older revision		Revision as of 19:44, 16 April 2019
Line 1:		Line 1:
	sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it from other types of editors.		sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it from other types of editors.
		+
		+	=Using sed=
		+
		+	Sed can remove all instances of foo with bar with the following.
		+	cat report.txt \| sed 's/foo/bar/g' > report_new.txt
		+
		+	This removed all lines containing "loopback" from FILENAME and outputs into newfile.txt
		+	sed '/loopback/d' ./FILENAME > newfile.txt
		+
		+	This will remove empty spaces from FILENAME.
		+	cat FILENAME \| sed '/^$/d;s/[[:blank:]]//g'

← Older revision		Revision as of 19:25, 16 April 2019
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−	~~{{DISPLAYTITLE:''sed''}}~~ sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it from other types of editors.	+	sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it from other types of editors.