memory: Improved my awk skills in 12 years - scripts - various script and utils
  HTML git clone git://z3bra.org/scripts
   DIR Log
   DIR Files
   DIR Refs
       ---
   DIR commit 5aac3f8aa0167d0add765c21b26d69aab27f672e
   DIR parent bda57d820711f01e0d45e5a707fbf45c60305fb6
  HTML Author: Willy Goiffon <dev@z3bra.org>
       Date:   Thu, 20 Aug 2026 23:59:00 +0000
       
       memory: Improved my awk skills in 12 years
       
       Diffstat:
         M memory                              |      22 ++++++++--------------
       
       1 file changed, 8 insertions(+), 14 deletions(-)
       ---
   DIR diff --git a/memory b/memory
       @@ -14,28 +14,22 @@ EOF
        
        # display the total of available memory in human readable format
        memtotal () {
       -    grep MemTotal /proc/meminfo | awk '{print $2}'
       +    awk '/MemTotal/{print $2*1000}' /proc/meminfo
        }
        
        # display the memory used
        memused () {
       -    t=$(grep MemTotal /proc/meminfo | awk '{print $2}')
       -    f=$(grep MemFree  /proc/meminfo | awk '{print $2}')
       -    b=$(grep ^Buffers /proc/meminfo | awk '{print $2}')
       -    c=$(grep ^Cached  /proc/meminfo | awk '{print $2}')
       -
       -    echo "($t - $f - $c - $b) * 1000" | bc
       +    awk '
       +      /MemTotal/ {t = $2}
       +      /MemFree/  {f = $2}
       +      /^Buffers/ {b = $2}
       +      /^Cached/  {c = $2}
       +      END {print (t-f-c-b)*1000}' /proc/meminfo
        }
        
        # display the memory used in percentage
        memperc () {
       -    t=$(grep MemTotal /proc/meminfo | awk '{print $2}')
       -    f=$(grep MemFree  /proc/meminfo | awk '{print $2}')
       -    b=$(grep ^Buffers /proc/meminfo | awk '{print $2}')
       -    c=$(grep ^Cached  /proc/meminfo | awk '{print $2}')
       -
       -    mem=`echo "100 * ($t - $f - $c - $b) / $t" | bc`
       -    echo "${mem}%"
       +    printf "%s%%\n" `echo "scale=1;100 * $(memused) / $(memtotal)" | bc`
        }