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Having a hard time with the sed/echo commands?

 
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# 1  
Old 03-12-2011
Having a hard time with the sed/echo commands?
Hello,

well what I'm trying to do is to remove underscores from filenames and leaving empty spaces instead:
Code:
arturas@Universe:/windows/Center/training$ ls
big_file  failas su shudu
arturas@Universe:/windows/Center/training$ a=big_file
arturas@Universe:/windows/Center/training$ mv $a `echo $a | sed 's/_/\\ /g'`
mv: target `file' is not a directory
arturas@Universe:/windows/Center/training$

I've tried a few more variations, but still, I think this one's the most accurate, others do the same though.

So, can anybody help me here? Thanks.
Last edited by fpmurphy; 03-12-2011 at 09:58 PM..
# 2  
Old 03-12-2011
I have modified your post to remove a number of inappropriate words.

Please read the rules, which you agreed to when you registered, if you have not already done so.

Thank You.

The UNIX and Linux Forums.
# 3  
Old 03-12-2011
Make sure 'file' doesn't already exist.
# 4  
Old 03-13-2011
No, "file" doesn't exist, I've shown the contents of my folder in my first post by using the command "ls".

I want to perform the same action, no matter what way, maybe without sed, does anyone know a way???
# 5  
Old 03-13-2011
Code:
mv $a "`echo $a | sed 's/_/\\ /g'`"

there is a white space after you replace the "_",the shell will expand that into two strings.
# 6  
Old 03-13-2011
Quote:
Originally Posted by homeboy
Code:
mv $a "`echo $a | sed 's/_/\\ /g'`"

there is a white space after you replace the "_",the shell will expand that into two strings.
Oooooh, thanks man, I got it now, it works!!! Thanks a lot, it took me a little to understand what you did here and in case some people will be reading this and have problems too, what he did was wrap this sentence with these " ": `echo $a | sed 's/_/\\ /g'`
Thanks again man!
# 7  
Old 03-13-2011
you should quota the second parameter of mv,you see,if you have a file named "name with blanks",the shell will expand the blanks within variables without double quotas or single quotas or backslash.
you should change your code into:
Code:
mv "$a" "`echo "$a" | sed 's/_/\ /g'`"

This User Gave Thanks to homeboy For This Post:
arcelivez
 
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