gawk/awk/tcsh - how to convert large number to human readable (Mb,Gb, etc)?

BrianK · 11-07-2007, 09:28 PM

in a script, I run through a file system finding certain files and accumulating their size.

At the end of the script, it generates a report, but the accumulated sizes are HUGE.

I'm woefully ignorant when it comes to [g]awk. Is there a simple way to convert the large number into something more human redable?

angrybanana · 11-07-2007, 10:48 PM

example code:

Code:

awk 'BEGIN{sum=456456;
hum[1024**3]="Gb";hum[1024**2]="Mb";hum[1024]="Kb"; 
for (x=1024**3; x>=1024; x/=1024){ 
        if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x];break }
}}'

output:

Code:

445.76 Kb

bigearsbilly · 11-08-2007, 05:28 AM

Code:

du -sh *
94M     HOME.tgz
32K     noughts.zip
146M    solaris_home_20070814.tgz

linux only

BrianK · 11-08-2007, 01:29 PM

Quote:

Originally Posted by angrybanana

example code:

Code:

awk 'BEGIN{sum=456456;
hum[1024**3]="Gb";hum[1024**2]="Mb";hum[1024]="Kb"; 
for (x=1024**3; x>=1024; x/=1024){ 
        if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x];break }
}}'

output:

Code:

445.76 Kb

Factastic, thanks!

I had to remove the "BEGIN" in order to be able to access data passed in through $1, otherise, this works great.

Thanks again.

angrybanana · 11-08-2007, 02:22 PM

Quote:

Originally Posted by BrianK

Factastic, thanks!

I had to remove the "BEGIN" in order to be able to access data passed in through $1, otherise, this works great.

Thanks again.

Oh yea, used "BEGIN" for demonstration sake (no input). You'll probably use it in "END". Also, I forgot to add in 'bytes', but that should be trivial.