Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

sed is not overwriting a file

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sed is not overwriting a file
# 1  
Old 02-16-2015
sed is not overwriting a file
hi

i have a file as in follwoing:

Code:
cat apple.txt
Apple is a fruit
But this fruit is costly

Now I used the sed command and i see output as in following

Code:
[root@2 ~]# sed 's/fruit/healthy &/'  fruit.txt
Apple is a healthy fruit
But this healthy fruit is costly
[root@2 ~]#

sed works fine here. But when I cat "fruit.txt" i dont see the file overwritten by the changes done by sed command. I see only old file which was existing
Code:
[root@2 ~]# sed 's/fruit/healthy &/'  fruit.txt
Apple is a healthy fruit
But this healthy fruit is costly
[root@2 ~]# cat fruit.txt
Apple is a fruit
But this fruit is costly
[root@2 ~]#

Please help Smilie
# 2  
Old 02-16-2015
Hello Priya,

For editing the file in sed you could use following option for same.
Code:
sed -i 's/fruit/healthy &/'  fruit.txt

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
Priya Amaresh
# 3  
Old 02-16-2015
Quote:
Originally Posted by RavinderSingh13
Hello Priya,
For editing the file in sed you could use following option for same.
Code:
sed -i 's/fruit/healthy &/'  fruit.txt

The -i option is only available if you are using GNU sed.

If it is not available on your system, try
Code:
$ sed 's/fruit/healthy &/'  fruit.txt > tmpfile
$ mv tmpfile fruit.txt

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX and Linux Applications

Logrotate with catalina.out "daily compressed file is overwriting the logs"

Hi Everyone, We are trying to do a logrotate for "catalina.out" daily, So have used the "copytruncate" option in the logrotate configuration but ended up seeing there was a 0kb file touched with "catalina.out" and the other file with the current date(compressed) file created and seems the log is... (2 Replies)
Discussion started by: thiyagoo
2 Replies

2. Shell Programming and Scripting

Avoid overwriting backup file when multiple entries need to replace in one file input from another

Hello, I have been working on script in which search and replace the multiple pattern. 1. update_params.sh read the multiple pattern from input file ParamMapping.txt(old_entry|New_entry) and passing this values one by one to change_text.sh 2. change_text.sh read... (0 Replies)
Discussion started by: ketanraut
0 Replies

3. Shell Programming and Scripting

File overwriting

Hi, An application is transferring a file to linux system with same file name. As file is transferring with same name always file will be overwritten. In this case we want to know what times file was overwirtten like below. Modify: 2014-05-12 00:52:01.000000000 Modify: 2014-05-12... (2 Replies)
Discussion started by: Satyak
2 Replies

4. Shell Programming and Scripting

Overwriting file with sftp

I have a script, which runs through cronjob every night 9 PM. It is supposed to do following tasks -- 1- Connect to ftp.testsite.com via user redtest 2- Fetch file red_bill.txt to my local server, where my script is residing. 3- Rename red_bill.txt to red_bill.V01.txt everyday on sftp server.... (4 Replies)
Discussion started by: solaris_1977
4 Replies

5. UNIX Desktop Questions & Answers

overwriting on a file

I have loads of files in different directories which I do miner changed on them and till now I have to create totally new directories for them, specially as I deal with a whole directory at once :wall::wall::wall::wall: it creates such as mess really e.g. FILES="F1/*" for X in $FILES do... (2 Replies)
Discussion started by: A-V
2 Replies

6. Linux

Is it possible to revert a file after overwriting it ?

Long story short, there was some sort of corruption with my ide and the script I was working on has been over written with nothing (the file is blank now). The IDE doesn't store a back up from what I know (I'm using notepadd++ in wine lol I know I know I'm addictted to the nppftp sidebar and geany... (1 Reply)
Discussion started by: noPermissions
1 Replies

7. Programming

Copying and overwriting a file using file descriptor

Hi , i have two basic requirement on linux platform . I am using C language to do this . 1) copying one file to another (assuming i know their file descriptors) 2) Overwriting a file using it file descriptor . Please guide. regards Aki (2 Replies)
Discussion started by: meet123321
2 Replies

8. Shell Programming and Scripting

Overwriting File

How to overwrite every time a particular portion of a file? ---------- Post updated at 02:16 PM ---------- Previous update was at 02:07 PM ---------- I have a file whose contents are something like: Output of "apachectl fullstatus" command: ---------------------------------------------... (3 Replies)
Discussion started by: proactiveaditya
3 Replies

9. Shell Programming and Scripting

successive file renaming & overwriting

Hi all, In our webserver customer wants to see the latest 10 files arrived. So the names are hardcoded in webpage like : filename_01.txt filename_02.txt .... .... filename_10.txt where the filename_01.txt is the latest one (typically the output of ls -1t) in the /../webpage directory.... (2 Replies)
Discussion started by: sabyasm
2 Replies

10. UNIX for Dummies Questions & Answers

Does "gzip" have a no prompt option on it for overwriting if file exists?

So I dont enounter things like: gzip: /sometimename.gz already exists; do you wish to overwrite (y or n)? Want to add it into a script and if there is a file aready there to just overwrite it, otherwise the script will hang unless there is manual intervention. (1 Reply)
Discussion started by: LordJezo
1 Replies
Login or Register to Ask a Question