Memory tools for Linux

checkRamUsageByProgramName.sh

#!/bin/sh
ps -eo rss,pid,user,command | sort -rn | head -10 | awk '{ hr[1024**2]="GB"; hr[1024]="MB";
 for (x=1024**3; x>=1024; x/=1024) {
 if ($1>=x) { printf ("%-6.2f %s ", $1/x, hr[x]); break }
 } } { printf ("%-6s %-10s ", $2, $3) }
 { for ( x=4 ; x<=NF ; x++ ) { printf ("%s ",$x) } print ("\n") }
 '

clearRAM_Dentries_Inodes.sh

#!/bin/bash
echo "echo 2 > /proc/sys/vm/drop_caches"

# Give permission to this file before execution using "chmod 755 clearRAM_**.sh"
# what is page cache, dentries and inodes ?: https://stackoverflow.com/questions/29870068/what-are-pagecache-dentries-inodes

clearRAM_PageCache.sh

#!/bin/bash
echo "echo 1 > /proc/sys/vm/drop_caches"

# Give permission to this file before execution using "chmod 755 clearRAM_**.sh"
# what is page cache, dentries and inodes ?: https://stackoverflow.com/questions/29870068/what-are-pagecache-dentries-inodes

clearRAM_PageCache_Dentries_Inodes.sh

#!/bin/bash
echo "echo 3 > /proc/sys/vm/drop_caches"

# Give permission to this file before execution using "chmod 755 clearRAM_**.sh"
# what is page cache, dentries and inodes ?: https://stackoverflow.com/questions/29870068/what-are-pagecache-dentries-inodes

clearRAM_SwapSpace.sh

#!/bin/bash
echo "swapoff -a && swapon -a"

# Give permission to this file before execution using "chmod 755 clearcache.sh"
# what is Swap Space in linux? : https://www.centos.org/docs/5/html/5.2/Deployment_Guide/s1-swap-what-is.html