Adding totals in a file

[steven Burgess_2]

Hi all

I've got an issue with a disk array - I have attempted to backthe data up in vg02 from the array. fbackup appeared to hang, i killed the processes, checked the tape index and appear to have a whole load of data on the tape - how much is the question. The usage of vg02 is 3.5 gig - if I grep a file from the index i can see the file and it's size. I have printed column 1 from the index ( file sizes ) and output to another file.

How can I add the total of all the lines in the file to get a calculation of how much data if have managed to back up, ie

12345
12345
12345

= 37035

Regards

Steve

[harry d brown jr · Accepted solution]

Steven,

use awk

awk 'BEGIN {total=0;} {total=total+$1;} END {print total,"\n";}'

live free or die
harry

[steven Burgess_2]

Hi Harry

As in

cat file | awk 'BEGIN {total=0;} {total=total+$1;} END {print total,"\n";}'

This gives

3.83543e+09

Excuse me if the above is correct - could you explain the output

Thanks

Steve

[James R. Ferguson]

Hi Steven:

The sum is in scientific notation. Hence, "e+09" means multiply by 10^9 ( or shift the decimal place 9-times to the right). In your example:

3.83543e+09 = 3,835,430,000

Regards!

...JRF...

[steven Burgess_2]

Hi

Thanks guys

Looks like I have all the data on the tape

Regards

Steve

[Bill Hassell]

Actually, you can test this a lot quicker. The table of contents is written *before* the files are written. Therefore, the last file in the index is the last file on tape. By restoring the last file on the tape, you'll know whether the previous tape is valid.

Use this:

cd /var/tmp

frecover -I /var/tmp/fbfiles -f /dev/rmt/
tail /var/tmp/fbfiles(find the last file on the backup)

frecover -xmF -f /dev/rmt/ -i /whatever_the_last_file_is

If it restores OK, then all the previous files are likely OK.