sed to replace at fixed location Post: 302535996

Sponsored Content

Top Forums Shell Programming and Scripting sed to replace at fixed location Post 302535996 by asutoshch on Sunday 3rd of July 2011 07:03:53 PM

07-03-2011

Registered User

sed to replace at fixed location

I have got a text file- each line of 200 characters length. The file is too large in size. It could be 100 MB. The lines begin with any of 0,1,2,3,4,5. I want to replace from 121-131 characters with spaces irrespective of wehatever it is there (the exisitng charatcers could be spaces). And this I want only for the lines starting with 3. Can someone help me how to proceed ?

Code:

1 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBC  CCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
0 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
3 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCC     CCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
3 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCC 6  CDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
5 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
1 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND

Afrer replacing it will look like

Code:

1 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBC  CCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
0 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
3 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBC          CCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
3 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBC            CDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
5 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND
1 THIS IS TO EXPLAIN WITH AN EXAMPLE HOW WE PROCESS THE STANDARD FLOW OF DATA SET     1 AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFfGGGGGGGHHHHEND

asutoshch

View Public Profile for asutoshch

Find all posts by asutoshch

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed replace with fixed length

$ cat template s.noName $ sed "s/s.no/1/" template > out $ sed "s/s.no/100/" template >>out $ cat out 1Name 100Name 1 Name 100Name

2. Shell Programming and Scripting

Replace fixed strings only

Hi All, I just need to do find and replace in a file.... say for eg I have the input file like below: in.txt ##### oldtextoldtext oldtext oldtext oldtext oldtext123 oldtext- oldtext I need to replace oldtext to newtext... my output file should come like below.. out.txt...

3. Shell Programming and Scripting

Replace spaces at a specific Location

Hello All, I have a comma separated file which needs to be loaded to the database. But, I need to trim the white spaces for a specific column before its loaded. Below is the sample line from the input file: 690,690,0575,"01011940","01011940", , , , , ,36720,36722,V2020,V2999,...

4. Shell Programming and Scripting

Replace Date in a fixed length file

Hello All, I working on ksh. I am using fixed length file. My file is like: ======== IXTTIV110827 NANTH AM IKSHIT ABCDEF 0617 IJAY NAND EENIG ZXYWVU 0912 AP OOK OONG PQRSTU100923 NASA DISH TTY ASDFG 0223 GHU UMA LAM QWERT 0111 ATHE SH THEW ======= From 7th to 12 is a date...

5. Shell Programming and Scripting

Using sed to replace a word at specific location

I'm try to change a the prohibit to aix for the lines starting with ssh and emagent and rest should be the same. Can anyone please suggest me how to do that using a shell script or sed passwd account required /usr/lib/security/pam_prohibit passwd session required ...

6. Shell Programming and Scripting

To replace the value of the column in a fixed width file

I have a fixed with file with header & trailer length having the same length of the detail record file. The details record length of this file is 24, for Header and Trailer the records will be padded with spaces to match the record length of the file Currently I am adding 3 spaces in header...

7. Shell Programming and Scripting

Deleting lines in a fixed length file where there is a word at specific location

I have a big file having 100 K lines. I have to read each line and see at 356 character position whethere there is a word "W" in it. If it is their then don't delete the line otherwise delete it. There are two lines as one Header and one trailer which should remain same. Can somebody...

8. Shell Programming and Scripting

Replace and Increment a value in the fixed length file

Hi Everyone, I need to increment a value in the fixed length file. The file has almost a million rows. Is there any easy way to accomplish this. Ex input file ASDSD ADSD 00000 X AAASD ADSD 00000 X SDDDD ADSD 00000 X Ouput ASDSD ADSD 00001 X AAASD ADSD 00002 X SDDDD ADSD 00003 X ...

9. Shell Programming and Scripting

Replace using awk on fixed width file.

All, I used to use following command to replace specific location in a fixed width file. Recently looks like my command stopped working as intended. We are on AIX unix. awk 'function repl(s,f,t,v) { return substr(s,1,f-1) sprintf("%-*s", t-f+1, v) substr(s,t+1) } NR<=10 {...

10. Shell Programming and Scripting

Replace characters at fixed positions

My objective is to replace the 8th, 9th, 10th characters by 1 space per character (total 3 spaces) in a file. I achieved this using following command: sed 's/$.$/\1@/7;s/@$...$/ /' FileData.txt > FileData_UPDATED.txt Another situation comes when I need to done same but excluding 1st...

LEARN ABOUT OPENSOLARIS

replace

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)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed replace with fixed length

Discussion started by: McLan

2. Shell Programming and Scripting

Replace fixed strings only

Discussion started by: askumarece

3. Shell Programming and Scripting

Replace spaces at a specific Location

Discussion started by: Praveenkulkarni

4. Shell Programming and Scripting

Replace Date in a fixed length file

Discussion started by: AnanthaDikshit