How to get rid of the insane "^M"

[hefeweizen]

Hi,

I got some files that I need to process and they contain some lines like this:

READ_CHARACTER^M_DONE

I checked and this "^M" thing makes me problem when I try to input this file to some program. If edit manually with vi and remove the "^M", then no problem.

But this file (and following) contains thousand of random appearances of this "^M". I thought about how to remove this. Perhaps sed -e "s/^M//g" could work, but I don't know how to use it.

Any suggestion ?

Thanks

[devils casper]

Use Backslash ( \ ) before ^ to override its default behavior :

sed -e "s/\^M//g" <file_name>

[wje_lf]

There's a way to delete those guys without leaving vi:

:%s/<control-V><control-M>//g

[Franklin52]

Use Backslash ( \ ) before ^ to override its default behavior :

sed -e "s/\^M//g" <file_name>

It isn't necessary to use a backslash and the g option is redundant because every line has one ^M character at the end of the line, this is suffice:

sed 's/^M//' file > newfile

however.... the ^M you must type as <Ctrl-v> and <Ctrl-m>.

Regards

[wje_lf]

It isn't necessary to use a backslash and the g option is redundant because every line has one ^M character at the end of the line

I think hefeweizen's example shows otherwise:

READ_CHARACTER^M_DONE

If there can be one ^M embedded in the middle of the line, there can be more than one.

[devils casper]

Hi Friends !

I know a little about Scripting and try my hands sometimes.
Learning a lot from you all. Thanx...

[Franklin52]

If there can be one ^M embedded in the middle of the line, there can be more than one.

You're right! There can be more in the middle of a line, the g flag is needed so my line should be:

sed 's/^M//g' file > newfile

Hi Friends !

I know a little about Scripting and try my hands sometimes.
Learning a lot from you all. Thanx...

Don't worry about that, we all learn from each other!


Regards

[anomie]

Here's yet another way to paint that bike shed:

$ dos2unix file_here

Default mode converts the file and writes output to it.

[scm]

The perl way:

perl -pi -e 's/^M//' filename

[wje_lf]

The perl way:

perl -pi -e 's/^M//' filename

Of course, in that the ^M means "control vee, control em", as it did in the previous uses of it in this thread.

The more conventional way in Perl is this, and in it you actually type all the characters as shown here. I've added back in the g, as noted in previous posts in this thread.

perl -pi -e 's/\r//g' filename