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02-22-2005
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Splitting a single line into multiple lines
I have a case where, I need to look into a file.
Go to each line of the file, find the length of the line, if the length of the line is more than 75 chars, I need to split the line into multiple lines of 75chars max. If the length of the line is less than 75, we need not do anything. So at the end of this operation , maximum length of anyline in the file should be only 75. Ex: file having 3 lines 1st line: 20chars 2nd line: 85chars 3rd line: 160chars after the executing the script, The file should be 1st line:20 chars 2nd line: 75 chars 3rd line: 10 chars 4th line: 75 chars 5th line: 75 chars 6th line: 10 chars Thanks for your help 
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02-22-2005
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Try the following ....
But the code is tested with 5 chars as criterion instead of 75. Change as per your requirement. Code:
awk '{
if ( length($0) > 5 )
{
str=$0 ;
i=0 ;
while(length(str) > 5)
{
printf("%s\n",substr($0,i+1,5) );
i+=5 ;
str=substr($0,i,length($0) );
}
if( length(str) > 1 )
printf("%s\n", substr(str,2,length(str))) ;
}
else
{
print $0
}
}' file1
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