For loop with sed


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting For loop with sed
# 1  
Old 09-10-2009
For loop with sed

Hi there,
I have 1 file with different 144 lines and 144 files that I want to change with a sed.

What I want to do is to go trough the file with the 144 different lines take the line a replace a certain pattern with said in the first file of the folder where the 144 files are. Take the second line of the file and replace with sed the second file of the folder etc etc.

How is this possible to do this?

Thanks!
# 2  
Old 09-10-2009
give an example...replace by what ????
# 3  
Old 09-10-2009
So the file with 144 lines looks like

Code:
010-1234
010-5678
...
...

And the files in the directory look like

Code:
AAAAA
117-4567
BBBBBB

or

Code:
AAAAAAA
AAA/117-4567
BBBBBBBB

so I what I want to do is run through the file with 144 lines take each line an replace the number in the files in the directory. So at the end the 2 above files will look like

Code:
AAAAA
010-1234
BBBBBB

Code:
AAAAAAA
AAA/010-5678
BBBBBBBB

In the directory there are 144 files
# 4  
Old 09-10-2009
Hi Sick,

Can u make your query very clear....sorry m not able to understand.

let me make it simple:
if you want to take one by one file and replace some certain strings then ..hope below one might help you...

[/CODE]
directory structure:
ls -lrt|nawk '{print $9}'
FILE1
FILE2
FILE3
FILE4
[/CODE]

Code:
for f in `ls -lrt|nawk '{print $9}'`
do
sed -i "s/'string'/'replace'/g" $f
done

Thanks
SHa
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Using sed in a for loop

Hi, I have a file called 1.txt, I want to create 2.txt through 100.txt using a for loop. In each instance of the loop, I want to change all "1"'s in the text file to "2"s and so on... I tried the code below to do this: for i in {2..100}; do sed 's/1/$i/g' 1.txt > $i.txt; done but it... (1 Reply)
Discussion started by: evelibertine
1 Replies

2. UNIX for Dummies Questions & Answers

Using sed in a for loop

Hello I have a group of files a1.profile a2.profile a3.profile a4.profile b1.profile b2.profile b3.profile b4.profile These files all have the same first line with a value s1 atop the columns s1_context s1_ref s1_sample s1_% etc I am trying to use sed in a for loop to replace the s1 in the... (2 Replies)
Discussion started by: plumb_r
2 Replies

3. Shell Programming and Scripting

Using variables in a sed loop...

Hi all, I'm trying to search for the first field in a file called vintella.sudoers_1 and then use the result to grep for its match in vintella.sudoers_useralias file but assigning the second field of what it finds to another variable called to_replace. I then want to use that to_replace... (9 Replies)
Discussion started by: Jazmania
9 Replies

4. Shell Programming and Scripting

Need help using sed inside the loop.

Hi, i have written a script. it collects data based on the sql queries executed by it. i have multiple output files. after the output file is made i need to do some cosmetic changes in the files and then store them. i am unable to use sed conditions inside the loop. see below code for... (3 Replies)
Discussion started by: dazdseg
3 Replies

5. Shell Programming and Scripting

Using sed in for loop

I have a file MAT.txt which contains the following data: mat1.txt mat2.txt . . . . mat100.txt I want to remove the '.txt' from every line and have an output file with the following data: mat1 mat2 . . . . mat100 I know this can be done with sed easily for each line, but I do... (8 Replies)
Discussion started by: ursaan
8 Replies

6. UNIX for Dummies Questions & Answers

SED inside while loop

Hi, im having problem creating a loop using my code: aside from the fact that the 1st variable (VAR) does not increment, it loops more than the expected output. for sample purposes, test csv contains 3 lines. #get number of lines in the file lines=$( wc -l < test.csv ) ... (5 Replies)
Discussion started by: paoie
5 Replies

7. Shell Programming and Scripting

Loop with sed command to replace line with sed command in it

Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line. ... (1 Reply)
Discussion started by: cbo0485
1 Replies

8. Shell Programming and Scripting

Using sed with a foreach loop

So I am back again beating my head against the wall with a shell script and getting a headache! I want to change each year in a file (1980, 1981, 1982, 1983, etc.) to the same year followed by a tab. The input is "blah blah (1980) blah blah". I want to get "blah blah (1980 ) blah blah".... (2 Replies)
Discussion started by: Peggy White
2 Replies

9. UNIX for Dummies Questions & Answers

sed in a for loop

dear guys, I want to replace the beginning of some lines in a file by (,) The sequence number of lines is located in a file named numbers so, i used this simple script to do so, but it didn't work. it does'nt recognize the $j in the command sed #! /bin/sh for j in `cat numbers` do sed '$j... (6 Replies)
Discussion started by: marwan
6 Replies

10. Shell Programming and Scripting

Problem with for loop/sed ?

I have a hostnames file which has: $ cat hostnames.txt serverxx1 serverxx2 serverxx3 My script: #!/bin/sh fileA=build.xml for i in ./hostnames.txt ; do sed 's/createConfig machine="Machine"/createConfig machine=" '$i' "/g' "$fileA" > ./tmpfile done FileA has: createConfig... (2 Replies)
Discussion started by: chiru_h
2 Replies
Login or Register to Ask a Question