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Shuffling a text file

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Operating Systems Linux Fedora Shuffling a text file
# 1  
Old 09-14-2012
Shuffling a text file
Hi,

I have a text file that is a single column. How do I write code to shuffle it? Thanks!

Sample input:
Code:
NANP
DLGAP5
BUB1
C4orf46
BID

# 2  
Old 09-14-2012
You could use the shuf command...
# 3  
Old 09-14-2012
I get the following error message when I try to use shuf:


-bash: shuf: command not found
# 4  
Old 09-14-2012
Well, what's your system?
# 5  
Old 09-14-2012
x86_64 GNU/Linux
# 6  
Old 09-14-2012
Great, you've told me what your kernel is. Now, linux what? Ubuntu? Centos? Fedora? RHEL? SuSe? Gentoo? Angstrom? That will tell me what software you actually have.

If you don't have shuf, try sort -R, 'sort on hash of random keys'.
# 7  
Old 09-20-2012
Try if this works
Code:
awk 'BEGIN{srand() }
{ lines[++d]=$0 }
END{
    while (1){
    if (e==d) {break}
        random = int(1 + rand() * d)
        if ( random in lines  ){
            print lines[random]
            delete lines[random]
            ++e
        }
    }
}' file

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