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Biggest files on FS /

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Operating Systems HP-UX Biggest files on FS /
# 1  
Old 03-11-2010
Biggest files on FS /
Hi!

I'm using Unix HP

I'm looking for a command which find the 20 (less or more) biggest files on / but which exclude every other files system

ThanksSmilie
# 2  
Old 03-11-2010
You'll have to find all files on the root device, telling find to exclude other mounted filesystems, and have it report the size in a common format (eg. in kilobytes). Then you can sort that output in reverse, and have head display the first 20 lines. Or, in code:
Code:
find / -xdev -type f -exec du -ks {} \; | sort -nr | head -20

# 3  
Old 03-11-2010
A faster approach, without executing an external program over and over, would be
Code:
find / -xdev -type f -ls | sort +6nr -7 | head -20

# 4  
Old 03-11-2010
Quote:
Originally Posted by hergp
A faster approach, without executing an external program over and over, would be
Code:
find / -xdev -type f -ls | sort +6nr -7 | head -20

On Linux, yes. On HP-UX (as the OP stated) it won't work as that find doesn't understand the -ls switch.
# 5  
Old 03-11-2010
Quote:
Originally Posted by pludi
On Linux, yes. On HP-UX (as the OP stated) it won't work as that find doesn't understand the -ls switch.
You're right.
Thanks hergp and pludi for your help Smilie
# 6  
Old 03-11-2010
The -ls switch is not only available on Linux but also on Solaris. If HP-UX doesn't understand it then you still can reduce the number of executions of du (in my testdrive on Solaris by factor 40) using
Code:
find / -xdev -type f | xargs du -k | sort +0rn -1 | head -20

# 7  
Old 03-11-2010
The hergp looks ok but fails on HP-UX when filenames contains spaces.

This visually inefficient method gives the correct answer very quickly.

Code:
find // -xdev -type f -size +1000000c -exec ls -lad {} \;| \
             awk '{print $5,$9}'|sort -n -r|head -20

If you have less than 20 files larger than 1,000,000 bytes then reduce the constant!
Last edited by methyl; 03-11-2010 at 06:22 PM.. Reason: typos
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