Shell Programming and Scripting

attachments          100G
shared                  1T
archive                 300M
documents             300G
remotedocs            150M

awk ' BEGIN { total_gb=0; } {
 if ($2 ~ /M/) { gsub("M","",$2); total_gb+=($2/1024); }
 if ($2 ~ /G/) { gsub("G","",$2); total_gb+=$2; }
 if ($2 ~ /T/) { gsub("T","",$2); total_gb+=($2*1024); }
 } END { printf "%0.2fG\n", total_gb;
} ' infile

du -sk *

 
cat input.txt | awk '{ if ( $2 ~ /T$/ ) Total+=substr($2,1,length($2)-1)*1000000; else if ( $2 ~/G$/ ) Total+=substr($2,1,length($2)-1)*1000; else Total+=substr($2,1,length($2)-1) } END { print Total "MB"}'

awk '/M$/{tot+=$2/1024}/G$/{tot+=($2/1)}/T$/{tot+=$2*1024}END{printf "%.2f",tot}'ile