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Not replacing using sed

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# 1  
Old 05-07-2015
Not replacing using sed
Hi all,

I am trying to change the below word. but the changes is not reflecting in the new file

Code:
 
sed -n 's/apple/orange/'  filename

---------- Post updated at 12:51 AM ---------- Previous update was at 12:41 AM ----------

I tried this it works
Code:
 perl -pi.bak -e 's/apple/orange/'  filename

# 2  
Old 05-07-2015
Quote:
Originally Posted by ramkumar15
Hi all,

I am trying to change the below word. but the changes is not reflecting in the new file

Code:
 
sed -n 's/apple/orange/'  filename

You have used -n switch which is stopping output to be displayed on the screen.

Code:
sed 's/apple/orange/'  filename > newfile

If your version supports -i option then you can save the changes in the same file.

Code:
sed -i 's/apple/orange/'  filename

# 3  
Old 05-07-2015
I have list of 1000 files in a text file, can anyone tell me how to replace a word in all the 1000 files. I have placed all the text files names in the a text file. changes.txt

this is command I am using to replace a single file.
Code:
 perl -pi.bak -e 's/apple/orange/'  filename

Code:
cat changes.txt
file1
file2
files3
..
..
filen

file1 ,file2, file3 contain the word apple I need to replace to orange, I need to do in a single shot. any help please.
# 4  
Old 05-07-2015
You need a loop to read the file. Search for it.
# 5  
Old 05-07-2015
Hello ramkumar15,

Could you please try following command, not tested though.
Code:
while read line
do
     sed -i 's/apple/orange/'  $line
done < "changes.txt"

Thanks,
R. Singh
# 6  
Old 05-07-2015
hi ravi, would like to know does the below command is efficiency to use.


Code:
#!/bin/ksh
for i in `cat 'files/chang1.txt`
do
sed -i 's/apple/orange/'  $line
done

# 7  
Old 05-07-2015
Quote:
Originally Posted by ramkumar15
hi ravi, would like to know does the below command is efficiency to use.


Code:
#!/bin/ksh
for i in `cat 'files/chang1.txt`
do
sed -i 's/apple/orange/'  $line
done

Hello Ramkumar15,

No, above command mentioned by you will not work, you need to remove single quote ' mentioned in RED color in quote section. Also it is always good practice to let people know about their suggestions if it worked for OP or not.


Thanks,
R. Singh
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