I have a bunch of files I need to change a letter to another letter only in the first column of a space delimited file. The problem is that after the first column, there's comments and such that cause problems with awk.
Here's what my data looks like:
Again, this is a space delimited file and this is just the first column. I want to change the a to b and not affect the rest of the data.
I would appreciate it if any one can guide me in using awk perhaps sed in extracting some values from a long string.
here is an example.
.......some lines here........
........ aaaa bbbb cccc ddddd eeeee fffff gggg (time:hhhh)........
......some lines here also..........
How can I extract... (2 Replies)
Hello,
I am new to shell scripting. I want to optimize my one of the script.
I have one file and i want to remove selected zones for domains from that file.In this file i have almost 3500 zones for domains.Sample data for the file....
named.backup... (0 Replies)
Hi guys,
I am tryingto delete or ignore columns in a large dataset using 'sed'. For example, I have the following dataset: -
20060714,X.XX,1,043004,Q,T,24.0000,1,25.5000,4,
20060714,X.XX,1,081209,Q,T,24.0000,1,25.5000,5,
As you can see, there are 10 columns here and the table that I am... (1 Reply)
Hi All,
I have a got a problem ..
I have t files as below:
1.txt contains
-----
-----
-----
column 1, "cat",
column 24, "dog",
column 100, "rat",
-----
-----
-----
2.sh should contain
-----
-----
-----
awk 'BEGIN { printf ("%1s","cat")}' (19 Replies)
Hi,
After looking on different forums, I'm still in trouble to parse a parameters line received in KSH.
$* is equal to "/AAA:111 /BBB:222 /CCC:333 /DDD:444"
I would like to parse it and be able to access anyone from his name in my KSH after.
like
echo myArray => display 111
... (1 Reply)
Hi,
I am able to generate a csv file which has 3 columns. But the header is not coming out exactly i.e it doesnot have a comma in between it but the data is getting produced with the comma.
The first line i.e the header is coming out as:-
Counter Number Counterparty1 Counterparty2
... (10 Replies)
I have file, i am extracting email address from file. but problem is that output is very ugly.
I am using this command
REMOVED "CSS OFFENDING CODE"...
While original filename have no such character. Please suggest. (20 Replies)
Hi All
I am having a file as shown below
File1#
modyle 1 {
test jsj
hhsjh 13e3
jsjjs
}
memP(dbg_trace) {
ajjs
jsjs
jsjs
Test(claer) {
jsjs (7 Replies)
Discussion started by: kshitij
7 Replies
LEARN ABOUT LINUX
colrm
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