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Insert new line in UNIX

 
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# 1  
Old 05-29-2013
Insert new line in UNIX
Hai,

How to insert a new line chracter "\n" in a line if it has more than 72 characters. My requirement is if the line has 72 characters i have to split it into two lines as follows.

I/p line :
this is a test line which is crossing seventy two characters so i have to split it -- this is of 83 length.

O/p should be :
this is a test line which is crossing seventy two characters so i have
to split it.

Any help is appreciated...

Thanks in advance..
# 2  
Old 05-29-2013
Using fold is one option:
Code:
$ echo "this is a test line which is crossing seventy two characters so i have to split it" | fold -w71
this is a test line which is crossing seventy two characters so i have
to split it

# 3  
Old 05-29-2013
Thanks.. i need to use it in my shell script.. I will let you know if it works.
Thanks again Smilie
# 4  
Old 05-29-2013
Although it is not in the standards, many systems also provide a utility named fmt. If your text contains indented portions and you want to maintain the indentation as lines are folded, fmt may work much better for you than fold. For example, if I have a file named long.txt containing:
Code:
This is text that is more than 40 characters wide and the following is a quote from another source:
        This is indented quoted text that is also more than 40 characters wide.
and this is unindented text following the above quote.

The command:
Code:
fmt -w 40 long.txt

would produce the output:
Code:
This is text that is more than 40
characters wide and the following is a
quote from another source:
	This is indented quoted text
	that is also more than 40
	characters wide.
and this is unindented text following
the above quote.

# 5  
Old 05-30-2013
Thank you, fmt is also working fine but the indentation is not necessary in my requirement. But i got to know about this utility i can explore more now.

Thanks again Smilie

---------- Post updated at 01:32 AM ---------- Previous update was at 01:00 AM ----------

This fmt utility works fantastic. I dont need to process each file using this fold. i can do it total file processing using fmt.

Thanks a ton Smilie
 
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