[ale] SOLUTION Re: Keep space separated values sane in a bash "for" loop?

[Christopher Bergeron]

Aha!  
James, I think you've _mostly_ solved my problem.   I used your cmdline 
(which works), however, it didn't work the way I was applying it:  as an 
alias!

For example:
find . -maxdepth 1 -mindepth 1 -type d | sed 's/\ /\\ /g'|sed 
's/.\///'|xargs du -sh     == works perfectly

however...

alias diskpie="find . -maxdepth 1 -mindepth 1 -type d | sed 's/\ /\\ 
/g'|sed 's/.\///'|xargs du -sh"    == does not work

I have it feeling it has something to do with escaping the quotes, but 
I'm surprised that alias mungs the string it runs (actually, I'm not 
really surprised)...

Kind regards,
CB






James P. Kinney III wrote:
> On Mon, 2007-04-09 at 18:11 -0400, Christopher Bergeron wrote:
>   
>> This solution doesn't work with "du" for some reason.
>>
>> #!/bin/bash
>> oldifs=$IFS
>> export IFS=","
>> for i in `ls -m|sed 's/, /,/g'`
>> do
>> du -sH \"$i\"
>> done
>> export IFS=$oldifs
>>
>> It appears its turning all of the elements $i into a single variable.
>>
>> This code demonstrates:
>>
>> #!/bin/bash
>> oldifs=$IFS
>> export IFS=","
>> for i in `ls -m|sed 's/, /,/g'`
>> do
>> echo du -sh \"$i\"
>> done
>> export IFS=$oldifs
>>
>>
>> What I'm trying to do is create a script that will do "du -sh" on each 
>> directory listed in the current directory. This is what I have so far:
>>
>> alias diskpie='for i in `\ls -l | grep drwx | tr -s " " | cut -f9 -d " 
>> "`; do du -sh $i; done'
>>
>> It works great unless it encounters a directory with a space in the name.
>>
>> Anyone have any other ideas?
>>
>>     
>
> find . -maxdepth 1 -mindepth 1 -type d | sed 's/\ /\\ /g'|sed 's/.\///'|
> xargs du -sh
>
>   
>> Kind regards,
>> Chris
>>
>>
>>
>>
>>
>>
>>
>>
>> Robert Story wrote:
>>     
>>> On Fri, 6 Apr 2007 12:18:08 -0400 Robert wrote:
>>> RS> On Thu, 5 Apr 2007 20:13:06 -0400 aaron wrote:
>>> RS> A> Here's technique that might help. I whipped this up for dealing with
>>> RS> A> spaced names common to audio file that I wanted to batch convert
>>> RS> A> to mp3.  Works with bash on Mac -- should work with Linux bash as
>>> RS> A> well. The trick was to pipe the file listing to READ from STDIN instead
>>> RS> A> of letting a FOR loop parse the input:
>>> RS> 
>>> RS> This works great for embedded spaces, but not so much for spaces at the
>>> RS> beginning or end of a file name...
>>>
>>>
>>> I've had this same problem for a while, and have always done manual clean-up.
>>> After trying these solutions and reading the ls man page, I now have a working
>>> solution that handles spaces anywhere in the name.
>>>
>>> #!/bin/bash
>>> oldifs=$IFS
>>> export IFS=","
>>> for i in `ls -m|sed 's/, /,/g'`
>>> do
>>>    echo \"$i\"
>>> done
>>> export IFS=$oldifs
>>>
>>>
>>> Of course, the above will break for files with a ',' in them, but I can live
>>> with that... the paranoid could add an initial ls|grep to check and warn for
>>> that case...
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>>> http://www.ale.org/mailman/listinfo/ale
>>>
>>>   
>>>       
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