How to substitute a word in multiple file?

Shell Programming and Scripting
1

Team,

I want to change below parameter in all the files in a directory,

Check for HOSTNAME=`hostname`
Change to HOSTNAME=localhost

And I tried below but, its not working

find /tmp -type f -exec sed 's/"HOSTNAME\=\`hostname\`"/"HOSTNAME\=localhost/g'"

Help me if I am missing something ...

2

Wildly guessing what might be "not working" I came up with

find /tmp -type f -exec sed 's/HOSTNAME=`hostname`/HOSTNAME=localhost/g' {} \;

Does this do what you want? But - this will output all modified files to stdout; correct redirections may not be that easy to find.

3

Use -i option for sed (if supported). No need to escape the " = " (or maybe for some versions of sed ).

4

My bad, still its not get substituting, I used below one

find /tmp -type f -exec sed 's/HOSTNAME=`hostname`/HOSTNAME=localhost/g' {} \;
5

Sorry: no info - no help.

6

I mean after executing the command the pattern is not getting changed/substituted with the new one. .. It remains the same old one...

---------- Post updated at 12:31 PM ---------- Previous update was at 12:24 PM ----------

It is working if the dirctory have only one file, but in my condition I have around 40 files in the direcyiry and in that 40 files around 7 files will have my search pattern and that has to be changed with new pattern.

7

I mean it worked perfectly on my linux system, and so there's no reason to believe it doesn't on yours unless you show us

  • your OS, shell, find , and sed versions
  • input data (file names, directory contents, files' contents)
  • DETAILED error description
  • system and / or error messages

What do you expect people in here to work upon?