Steve Youngs wrote at 10/29/99 03:18 CET:
>
> Okay, I'm trying to get a script to do one of the following:
>
> if [ sizeof(file1) < sizeof(file2)]; then
> cp file2 file3
> fi
>
> or
>
> if [ sizeof(file1) < 1024 ]; then
> cp file2 file3
> fi
>
<snip>
Suggestions received were:
"Baskette, John" wrote:
>
> Something like this should work:
>
> sizeof () {
> ls -l $1 | sed 's/ */ /g' | cut -f5 -d' '
> }
>
<snip>
(where the sed command should really read "tr -s ' '" :-)
Marc Mutz wrote:
>
> #!/bin/bash
>
> size1=$(ls -l file1|(read perms num_hd_links user group size rest; \
> echo $size) )
> size2=$(ls -l file2|(read perms num_hd_links user group size rest; \
> echo $size) )
>
> if [ $size1 -gt $size2 ];then
> # sizeof(file1) > sizeof(file2)
> else
> # sizeof(file1) <= sizeof(file2)
> fi
>
<snip>
[EMAIL PROTECTED] wrote:
>
> sizeof() { local lies; lies=$(ls -l $1 2>/dev/null); if test -f $1
> then (echo $lies|cut -d' ' -f 5);
> else echo NAN;
> fi
> }
>
<snip>
All of these focused on providing something like a sizeof function,
which is of course the most useful version. But if you just wanted to
know what file in a given set was the biggest (the samllest), you'd use
biggest_in () {
ls -S1 "$@" | head -n1
}
or
smallest_in () {
ls -S1r "$@" | head -n1
}
where -S is an abbreviation for --sort=size
-1 is an abbreviation for --format=single-column
and -r is an abbreviation for --reverse
Just found it might be interesting to someone ...
Marc
--
Marc Mutz <[EMAIL PROTECTED]> http://marc.mutz.com/Encryption-HOWTO/
University of Bielefeld, Dep. of Mathematics / Dep. of Physics
PGP-keyID's: 0xd46ce9ab (RSA), 0x7ae55b9e (DSS/DH)
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