Insert a single quote in front of a line in vi editor Post: 302954176

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Top Forums Shell Programming and Scripting Insert a single quote in front of a line in vi editor Post 302954176 by RavinderSingh13 on Saturday 5th of September 2015 02:59:56 AM

09-05-2015

Moderator

Hello Pokhraj,

Following may help you in same, if you want to change the source file itself.

Code:

awk -vs1="'" '{$5=s1 $5 s1;$NF=s1 $NF s1;} 1' Input_file > temp_Input_file
mv temp_Input_file Input_file

If you don't want to change the source(Input_file) then remove move command from solution.

EDIT: You can do following in vieditor.
The formal syntax for searching is:

:s/string

For example, suppose you want to search some text for the string "cherry." Type the following and press ENTER:

:s/cherry

The first match for "cherry" in your text will then be highlighted. To see if there are additional occurrences of the same string in the text, type n, and the highlight will switch to the next match, if one exists.

The syntax for replacing one string with another string in the current line is

:s/pattern/replace/

Here "pattern" represents the old string and "replace" represents the new string. For example, to replace each occurrence of the word "lemon" in a line with "orange," type:

:s/lemon/orange/

The syntax for replacing every occurrence of a string in the entire text is similar. The only difference is the addition of a "%" in front of the "s":

:%s/pattern/replace/

Thus repeating the previous example for the entire text instead of just for a single line would be:

:%s/lemon/orange/

Thanks,
R. Singh

Last edited by RavinderSingh13; 09-05-2015 at 04:55 AM.. Reason: Added examples for vi editor

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LEARN ABOUT PHP

mb_eregi_replace

MB_EREGI_REPLACE(3)							 1						       MB_EREGI_REPLACE(3)

mb_eregi_replace - Replace regular expression with multibyte support ignoring case

SYNOPSIS

       string mb_eregi_replace (string	$pattern, string  $replace, string  $string, [string  $option = "msri"])

DESCRIPTION

	Scans $string for matches to $pattern, then replaces the matched text with $replacement.

PARAMETERS

	      o $pattern
		- The regular expression pattern. Multibyte characters may be used. The case will be ignored.

	      o $replace
		- The replacement text.

	      o $string
		- The searched string.

	      o $option
		-$option has the same meaning as in mb_ereg_replace(3).

RETURN VALUES

	The resultant string or FALSE on error.

NOTES

       Note

	      The  internal  encoding  or the character encoding specified by mb_regex_encoding(3) will be used as the character encoding for this
	      function.

       Warning

	      Never use the e modifier when working on untrusted input. No automatic escaping will happen (as  known  from  preg_replace(3)).  Not
	      taking care of this will most likely create remote code execution vulnerabilities in your application.

SEE ALSO

       mb_regex_encoding(3), mb_ereg_replace(3).

PHP Documentation Group 												       MB_EREGI_REPLACE(3)

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