UNIX for Dummies Questions & Answers

This prtal is not allowing me to paste the original data.PLease find attached teh sample data with which i am working with

Hi, that file is in DOS format. It contains 3 records of 991 characters and 4 empty lines with one carriage return character. If I convert it to unix through

Code:

tr -d '\r' < infile.dos > infile

Then each line has 990 characters and 4 empty lines
When I run this:

Code:

awk '/^1000100/ {$0=sprintf("%s%0" w-length "s", $0,x)}1' w=1000 infile

10 zeroes are padded at the end of the 3 records..
If I do the same on the DOS file then 9 zeroes get written after the carriage return character and before the newline, so they get written at the beginning of the wrapped line on the terminal it happens to be displayed on....

Hi Scrutnizer

Since i am new to unix can u let me know how you got to know tht the data file is in DOS format.

And also i will want to retain the the other data also

Source:
1000100............
3000300.........
34323...........
.
.
.

output required :
1000100............( padded with zeros and record size made to 1000)
3000300.........(original data length from source itself)
34323...........(original data length from source itself)
.
.
.
.

Hi you can do this

Code:

if grep -q '^M' file; then
  echo "This is a DOS file"
fi

note: you cannot copy-paste this command. The ^M is one character, entered like this on the command line CTRL-V <ENTER>

Or you could use
use od -c to check if there are CR characters. Then you see \r \n combinations..

Code:

if od -c file | grep -q '\\r *\\n' ; then
  echo "This is a DOS file"
fi

Hey Scrutnizer thnks a lot the script works fine for me