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Top Forums Shell Programming and Scripting Inserting a character in a data file Post 31233 by Vishnu on Monday 4th of November 2002 04:21:20 PM
Old 11-04-2002
try sed with "tagged regular expressions", like this...

sed -e 's/^\(..............\).\(.*\)$/\1\|\2/g' yourfile > newfile

I just tagged the first 14 columns using
^\(..............\)

and from 16th column to last using
\(.*\)$

in between these two I left a single character belonging to the 15th column untagged...

in the replacement string, I reproduced the two tagged portions with a pipe in the middle using...

\1\|\2

in the above code I was replacing the 15th column with a "|", if you want to insert a pipe in the 15th column...

sed -e 's/^\(...............\)\(.*\)$/\1\|\2/g' yourfile > newfile

Cheers!
Vishnu.

Last edited by Vishnu; 11-04-2002 at 05:40 PM..
This User Gave Thanks to Vishnu For This Post:
 
Test Your Knowledge in Computers #580
Difficulty: Easy
A file is a block of data used for storing information.
True or False?

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD

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