Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Pattern matching problem

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Pattern matching problem
# 1  
Old 07-09-2012
Pattern matching problem
Hi I need a bash script that can search through a text file for all lines starting with 71502FSC1206 on every line it finds starting with this I need to place a letter F at the 127 position on that line.

Thanks

Paul
# 2  
Old 07-09-2012
try this.....
Code:
cat file | grep "^71502FSC1206" | sed 's/127/F/g'

# 3  
Old 07-09-2012
Quote:
Originally Posted by pamu
Code:
cat file | grep "^71502FSC1206" | sed 's/127/F/g'

Thanks for the reply but that did not work, I need it to place a Letter F at the 127th position on every line it finds that starts with 71502FSC1206 Smilie
# 4  
Old 07-09-2012
can you post the sample input file and expected output

---------- Post updated at 08:03 PM ---------- Previous update was at 07:59 PM ----------

try this...

Code:
awk '/71502FSC1206/{$0=substr($0,1,126)"F"substr($0,128,length($0))}1' input.txt

# 5  
Old 07-09-2012
To make that change with sed:
Code:
sed '/^71502FSC1206/s/.\{126\}/&F/' file

With ed:
Code:
ed -s file <<'EOED'
g/^71502FSC1206/s/.\{126\}/&F/
w
q
EOED

Regards,
Alister
Last edited by alister; 07-09-2012 at 04:34 PM.. Reason: Added anchor
# 6  
Old 07-09-2012
sed:
Code:
sed '/^71502FSC1206/s/./F/127'


--
Some awks can do this:
Code:
awk '/^71502FSC1206/{$127="F"}1' FS= OFS= infile

# 7  
Old 07-10-2012
Many thanks everyone! really really appreciate the help, all working now Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Pattern matching problem

if i have to do pattern match for file name with digit alphanumeric value like this File_1234.csv File_12sd45rg.csv i am using this File_*.csv and File_*.csv for digit pattern match. when i am doing pattern match for the digit then both alphanumeric match and digit match is coming. ... (3 Replies)
Discussion started by: ramsavi
3 Replies

2. Shell Programming and Scripting

Pattern matching and format problem

Hi I need a bash script that can search through a text file and when it finds 'FSS1206' I need to put a Letter F 100 spaces after the second instance of FSS1206 The format is the same throughout the file I need to repeat this on every time it finds the second 'FSS1206' in the file I have... (3 Replies)
Discussion started by: firefox2k2
3 Replies

3. Programming

pl sql . pattern matching problem

hi everyone i am facing a strange problem declare v_var number(10); begin if( regexp_like('RCDORMS_MMS_*_DAR','RCDORMS_MMS_*_DAR')) then v_var:=20; dbms_output.put_line(v_var); end if; end; / please tell me what's the wrong thing in this expression.. as i am not able to get... (1 Reply)
Discussion started by: aishsimplesweet
1 Replies

4. Shell Programming and Scripting

pattern matching problem

# cat email.txt | grep -i "To:" To: <test@example.com> # cat email.txt | grep -i "Subject" Subject: Test Subject: How are you. I need to print only test@example.com from To field need to eliminate "< & >" from To field and need to print entire subject after Subject: It should be #... (7 Replies)
Discussion started by: mirfan
7 Replies

5. Shell Programming and Scripting

Problem extracting just a part of a matching pattern

Hello everyone, this is my first post so please give me a hand. I apologize for my English, I'll try to be clear with my request. I need to write a script (Bash) which finds all the variables defined in the file .h of the folder and then writes the name of the files .c where these variables are... (1 Reply)
Discussion started by: paxilpaz
1 Replies

6. Shell Programming and Scripting

problem using sed for pattern matching

if abc.sh is 192.168.1.41 then the output that i get is v5c01 my code is sed 's/192.168.1.4/v5c0/g s/192.168.1.41/acc1/g' abc.sh 2>&1 | tee abc.sh i want to find 192.168.1.4 and replace it with v5c0 and find 192.168.1.41 and replace it with acc1 and i want to do it using sed (5 Replies)
Discussion started by: lassimanji
5 Replies

7. Shell Programming and Scripting

Pattern Matching problem in UNIX

Hello All, I need help I have a problem in searching the pattern in a file let us say the file contains the below lines line 1 USING *'/FILE/FOLDER/RETURN') ................. ................. line 4 USING *'/FILE/FOLDER/6kdat1') line 5 USING... (2 Replies)
Discussion started by: maxmave
2 Replies

8. Shell Programming and Scripting

pattern matching problem

FilesToBackup='*.track* *.xml *.vm* *.gz Trace* TRACE* "*core*" *.out fcif_data_* esi_error_* *.rollback *.sed R.* APStatus_* log* *.output* send_mail* downenv* check_env* intaspurge_db_* sqlnet.log *.rpt *.html *.csv "*TSC*"' and i am using it like this- echo Moving files from $(pwd): ... (2 Replies)
Discussion started by: namishtiwari
2 Replies

9. Shell Programming and Scripting

problem with CASE pattern matching

I am using ksh on a HP Ux. I have a simple script but am having problem with the case statement:- #!/usr/bin/sh Chl=”SM.APPLE_SWIFT_DV” LoConfirm=”” case $chl in ) LoConfirm=”Using channel at Building 1” echo “test conditon1” echo $LoConfirm;; ) LoConfirm=”Using... (2 Replies)
Discussion started by: gummysweets
2 Replies

10. Shell Programming and Scripting

pattern matching problem

I have a file with the following contents; NEW 85174 MP081 /29OCT07 CNL 85986 MP098 /28OCT07 NEW 86014 MP098 /28OCT07 NEW 86051 MP097 /27OCT07 CNL 86084 MP097 /27OCT07 Now I have to retrieve all lines that start with NEW and where the next line starts with CNL and where the MP codes are... (8 Replies)
Discussion started by: rein
8 Replies
Login or Register to Ask a Question