Sponsored Content
Top Forums Shell Programming and Scripting How to replace rows from...to in a file? Post 302353477 by smitty11 on Tuesday 15th of September 2009 12:01:06 PM
Old 09-15-2009
Thx for reply.
I have written the code in my script file:

#!C:/perl/bin/perl -w

BEGIN {
undef $/;
open(F1,"f1.txt");
$str = <F1>;
$str =~ s/start...|\n...end//g;
close(F1)
}
s/(start...).*?(...end)/$1$str$2/msg;
print "f2.txt";


I always get the Message:
"Use of uninitialized value in substitution (s///) at C:\Test\doit.pl line 12."

Please help!

Last edited by smitty11; 09-16-2009 at 03:36 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

count numbers of matching rows and replace its value in another file

Hello all, can you help me in this problem, assume We have two txt file (file_1 and file_3) one is file_1 contains the data: a 0 b 1 c 3 a 7 b 4 c 5 b 8 d 6 . . . . and I need to count the lines with the matching data (a,b,..) and print in new file called file_2 such as the... (4 Replies)
Discussion started by: GoldenFalcon10
4 Replies

2. Shell Programming and Scripting

Deleting specific rows in large files having rows greater than 100000

Hi Guys, I need help in modifying a large text file containing more than 1-2 lakh rows of data using unix commands. I am quite new to the unix language the text file contains data in a pipe delimited format sdfsdfs sdfsdfsd START_ROW sdfsd|sdfsdfsd|sdfsdfasdf|sdfsadf|sdfasdf... (9 Replies)
Discussion started by: manish2009
9 Replies

3. Shell Programming and Scripting

delete rows in a file based on the rows of another file

I need to delete rows based on the number of lines in a different file, I have a piece of code with me working but when I merge with my C application, it doesnt work. sed '1,'\"`wc -l < /tmp/fileyyyy`\"'d' /tmp/fileA > /tmp/filexxxx Can anyone give me an alternate solution for the above (2 Replies)
Discussion started by: Muthuraj K
2 Replies

4. Shell Programming and Scripting

Extract rows from file based on row numbers stored in another file

Hi All, I have a file which is like this: rows.dat 1 2 3 4 5 6 3 4 5 6 7 8 7 8 9 0 4 3 2 3 4 5 6 7 1 2 3 4 5 6 I have another file with numbers like these (numbers.txt): 1 3 4 5 I want to read numbers.txt file line by line. The extract the row from rows.dat based on the... (3 Replies)
Discussion started by: shoaibjameel123
3 Replies

5. UNIX for Dummies Questions & Answers

merging rows into new file based on rows and first column

I have 2 files, file01= 7 columns, row unknown (but few) file02= 7 columns, row unknown (but many) now I want to create an output with the first field that is shared in both of them and then subtract the results from the rest of the fields and print there e.g. file 01 James|0|50|25|10|50|30... (1 Reply)
Discussion started by: A-V
1 Replies

6. Shell Programming and Scripting

Moving or copying first rows and last rows into another file

Hi I would like to move the first 1000 rows of my file into an output file and then move the last 1000 rows into another output file. Any help would be great Thanks (6 Replies)
Discussion started by: kylle345
6 Replies

7. Shell Programming and Scripting

Replace a character of specified column(s) of all rows in a file

Hi - I have a file "file1" of below format. Its a comma seperated file. Note that each string is enclosed in double quotes. "abc","-0.15","10,000.00","IJK" "xyz","1,000.01","1,000,000.50","OPR" I want the result as: "abc","-0.15","10000.00","IJK" "xyz","1,000.01","1000000.50","OPR" I... (8 Replies)
Discussion started by: njny
8 Replies

8. Shell Programming and Scripting

Replace rows to column

I have a csv file and i want to convert its rows into columns sample file like this Row1,1,2,3,......,n row2,4,5,6,.......,n . . . . rown,7,8,9,........,n i want it like this row1,row2,....,rown 1,4,.............,7 (4 Replies)
Discussion started by: sagar_1986
4 Replies

9. UNIX for Dummies Questions & Answers

Replace space in column with letter for several rows

I have a pbd file, which has the following format: TITLE Protein X MODEL 1 ATOM 1 N PRO 24 45.220 71.410 43.810 1.00 0.00 ATOM 2 H1 PRO 24 45.800 71.310 42.000 1.00 0.00 TER ENDMDL Column 22 is the chain... (5 Replies)
Discussion started by: Egy
5 Replies

10. Shell Programming and Scripting

Find and replace in different rows

Hello everyone, I'm a beginner in shell scripting and try to solve my issues myself, but now I am at a point where I need your help. Below is an excerpt from an xml file. <Position> <SKU>A/370269/10432/32D</SKU> <Batch>00320160501</Batch> ... (1 Reply)
Discussion started by: Jacko
1 Replies
replace(1)							  MySQL database							replace(1)

NAME
replace - A utility program that is used by msql2mysql, but that has more general applicability as well. replace changes strings in place in files or on the standard input. Uses a finite state machine to match longer strings first. Can be used to swap strings. USAGE
replace [-?svIV] from to from to ... -- [files] or replace [-?svIV] from to from to ... < fromfile > tofile SYNOPSIS
replace [-?|-I] [-s] [-v] DESCRIPTION
replace -?|-I info -s silent -v verbose EXTRA INFO
Special characters in from string: ^ Match start of line. $ Match end of line.  Match space-character, start of line or end of line. For a end  the next replace starts locking at the end space-character. A  alone in a string matches only a space-character. EXAMPLE
this command swaps a and b in the given files: shell> replace a b b a -- file1 file2 ... SEE ALSO
isamchk(1), isamlog(1), mysql(1), mysqlaccess(1), mysqladmin(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysql_fix_privi- lege_tables(1), mysqlshow(1), mysql_zap(1), perror(1), For more information please refer to the MySQL reference manual, which may already be installed locally and which is also available online at http://www.mysql.com/doc/en/ BUGS
Please refer to http://bugs.mysql.com/ to report bugs. AUTHOR
Ver 1.0, distribution 4.0.24 Michael (Monty) Widenius (monty@mysql.com), MySQL AB (http://www.mysql.com/). This software comes with no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mercur- media.com) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+------------------------------------+ |Availability | SUNWmysqlr, SUNWmysqlu, SUNWmysqlt | +--------------------+------------------------------------+ |Interface Stability | External | +--------------------+------------------------------------+ NOTES
Source for mysql is available on http://opensolaris.org. MySQL 4.0 19 December 2000 replace(1)
All times are GMT -4. The time now is 08:07 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy