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Top Forums Shell Programming and Scripting How to insert a '#' in the first position of all the files? Post 302842801 by anand787 on Saturday 10th of August 2013 11:48:23 AM
Old 08-10-2013
Reference How to insert a '#' in the first position of all the files?

Hi All,

how to insert a '#' in the first position of all the files based on a certain condition.

I tried this:

Code:
cat /bin/user/input_file.txt | while read a 
do
b=`sed 's/.*song=good.*/\#&/g' $a `
echo $b > /bin/user/new/output_file.txt
done

input_file.txt has list of names of 10 files.. the sed condition will check all the files and search for the condition (song=good) and then inserts a # and then redirects the output to a new directory and a new file output_file.txt..

when i ran this,i am not able to get the desired output.

required output:

file 1:
Code:
1.elvis presly 1,5,6,song=bad;
#2.richie,2,6,8,song=good;
3.benaud,3,9,8,song=bad;

output which i am getting:

Code:
1.elvis presly 1,5,6,song=bad; #2.richie,2,6,8,song=good; 3.benaud,3,9,8,song=bad;

please help me on this

Last edited by Don Cragun; 08-10-2013 at 11:22 PM.. Reason: Add CODE and ICODE tags.
 
Test Your Knowledge in Computers #956
Difficulty: Medium
A polymorphic virus infects files with an encrypted copy of itself which is decoded by a decryption module which is modified on each infection.
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DwtScrollBarGetSlider(3Dwt)											       DwtScrollBarGetSlider(3Dwt)

Name
       DwtScrollBarGetSlider - Retrieves the current size and position parameters of the slider in the scroll bar widget.

Syntax
       void DwtScrollBarGetSlider(widget, value_return, shown_return,
				  inc_return, pageinc_return)
	    Widget widget;
	    int *value_return;
	    int *shown_return;
	    int *inc_return;
	    int *pageinc_return;

Arguments
       widget	 Specifies the scroll bar widget ID.

       value_return
		 Returns  the scroll bar's top thumb (slider) position between the DwtNminValue and DwtNmaxValue attributes to the scroll bar wid-
		 get.

       shown_return
		 Returns the size of the slider as a value between zero and the absolute value of DwtNmaxValue minus DwtNminValue.   The  size	of
		 the slider varies, depending on how much of the slider scroll area it represents.

       inc_return
		 Returns the amount of button increment and decrement.

       pageinc_return
		 Returns the amount of page increment and decrement.

Description
       The DwtScrollBarGetSlider function returns the currently displayed size/position values of the slider in the scroll bar widget.	The scroll
       region is overlaid with a slider bar that is adjusted in size and position using the main scroll bar or	set  slider  function  attributes.
       The stepping arrows and the slider are the scroll activator objects providing the user interface syntax ``feel.''

See Also
       DwtScrollBarSetSlider(3Dwt)
       Guide to the XUI Toolkit: C Language Binding
       Guide to the XUI Toolkit Intrinsics: C Language Binding

														       DwtScrollBarGetSlider(3Dwt)

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