How to find no. of core files in /home?

[david_252]

Team:

I need to find out the number of core files in /home (Note only files and not directories) and also would like to know the space they occupy together. Please let me know how to do it. We have in /home lot of core directories too(for Appln. purposes and i do not need them). I just need the core files sizes and i need to know if i clear them how much space i would get.

Thanks

David.

[Ross Zubritski]

cd /home
find . -name core

Regards,

RZ

[Patrick Wallek]

# cd /home
# find . -type f -name core -exec ls -ld {} \;

[Ross Zubritski]

whoops, forgot the wc.
Whoops, forgot the wc

cd /home
find . -name core | wc

[James R. Ferguson · Accepted solution]

Hi David:

# find /home -type f -name .profile -exec ls -l {} \;|awk 'END{print SZ};{SZ=SZ+$5}'

Regards!

...JRF...

[david_252]

Team:

I used JRF's method for core and it gave back the following when i run the script. could anyone tell me what this means??

3.82385e+06

I just substituted .profile with core in his script.

Thanks

David.

[James R. Ferguson]

Hi David:

That's standard scientific notation for 3.82385 multiplied by ten to the sixth power, or 3,823,850.

If you prefer, we can format your output. Change the 'awk' protion to read:

# ... awk 'END{printf "%10d\n",SZ}; {SZ=SZ+$5}'

...this will right justify a 10-digit decimal number.

Regards!

...JRF...

[Jeff Schussele]

Hi David,

Try this:

find /home -type f -name core -exec ls -ld {} \; | awk '{ print $5, $9 }'

HTH,
Jeff

[Adam J Markiewicz]

Hi

As you are curious how much space you will gain after deleting core files I have to add, that 'ls' command returns the _length_ of the file.

core files are so-called sparse files, in other words the have a lot of empty 'holes'. With i-node philosophy these holes are mostly not written and do not occupy any space on disk. It is possible that the long file does not occupy so much space on disk.

To check how much disk space is really used I would suggest 'du' command instead of 'ls -ld'. This command gives you the number of half-kB blocks occupied by the file instead of simple bytes.

Good luck
Adam