UNIX for Beginners Questions & Answers

Hello everybody,


I'm a new user in forum,



In a script, i would like that the result sort :

Code:

/usr - 665 Go (free: 631 Go / 6% used)

but i obtain :

Code:

/usr - 665G Go (free: 631G Go / 6% used)

My command line is :

Code:

RES_DF=`df -BG /usr/ | tail -n1 | awk -vOFS='' '{print $5, " - ", $1, " Go (free: ", $3, " Go / ",$4, " used)"}'`

Cause :
DF sort size in GO with the "G" character.

Question :
Do you have an idea for me to get what I want...?


Thank's a lot

Moderator's Comments:

Please use CODE tags as required by forum rules!

Welcome to the forum.


Please stick to the rules (e.g. use code tags), and be careful and consistent when presentig your problem (e.g. df -h in the title while df -BG in the post).


For your problem, none of the two, be it df -h or df -BG, is the option of choice, as the results displayed may suffer from improper rounding effects, and you always ask yourself are those units for 2^30 or 1E9 multipliers. Use blocks or bytes instead, and calculate to taste.


To remove the G character, use awk's sub() function for every field that it applies to, e.g. sub (/G/, "", $3).
If using df -B1, try int($3/2^30+.5)

Hi,



Ok, thanks for your help and sorry for incoherence of my title...


I almost got what i want with :

Code:

RES_DF=`df "/usr/" | grep "/usr/" | awk -vOFS='' '{print $5, " - ", $1/1024/1024, " Go (free: ", $3/1024/1024, " Go / ",$4, " used)"}'`


Reslult :  /usr/ - 4.80615 Go (free: 3.05335 Go / 34% used)

Except now I want to round to one number after the comma

Try setting the output format string: -vOFMT="%.1f".

Very good Rudic, it works!



Thank a lot and have a nice weekend!

I think you struggle with the GNU df output over two lines even if it's not a terminal.
A good fix is df -kP

Code:

df -kP /usr | awk '/^\// { printf "%s - %.1f Go (free: %.1f Go / %s used)\n", $6, $2/1024/1024, $4/1024/1024, $5 }'