Shell Programming and Scripting

Hi All,

I am new to shell scripting, please help!

On regular basic we get file in different directory which contains either \M in the file at the starting of the line or at the end. I have to replace the same with blank.
I have tried writing the script however it's not working, can some one please help.

Thanks

is it the content of the File will have \M or the file name ?..

In the First case :

Ex : cat file.txt

end \M
sample text \M bet ween
\M Start

TEST>sed -e 's/^\\M//g' -e 's/\\M$//g' file
end
sample text \M bet ween
Start

Will remove \M only if is at the begining or end of the line.

Thanks

\M is in the content of file

check this out for searching \M at the starting of all statement and replace it with blank space.
cat ref | sed 's/^\\M/ /'

check this out for searching \M at the end of all statement and replace it with blank space.

cat ref | sed 's/\\M$/ /'


Input file is "ref" and contents of it as below
\MMdelhi
new\M
unix\Mtechnologies\M
tech\Mdiscuss\M

OUTPUT as replace \M at starting is as below
Mdelhi
new\M
unix\Mtechnologies\M
tech\Mdiscuss\M


OUTPUT to replace at end of statement is as below
\MMdelhi
new
unix\Mtechnologies
tech\Mdiscuss

Thanks Pradeep !!

How about “ du -k |awk '{print $2}'>file0 “? Is this correct as I am trying to find the files which are at the given file system, mean if there is four different directory having different file which content \M . eg
/app/log/dir1/file1
/app/log/dir2/file1
/app/log/dir3/file2
/app/log/dir4/file1

i am taking the last columns of du –k and writing to file file0 which I am passing for \m Check.

Also, can you guys direct me towards some good sed tutorials ?

hello kumarmani,
You can check out this link
Sed - An Introduction and Tutorial

If you want to go through other tutorials . You can search for "sed tutorial" in google.