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whkernel
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whkernel
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#!/usr/bin/bash
red=$'\e[1;31m' # red colour
green=$'\e[1;32m' # green colour
blue=$'\e[1;34m' # blue colour
orange=$'\e[1;33m' # orange colour
printf "Enter Kernel Parameter name:"
read parameter
# Shared Memory
if [ "$parameter" == sem ];then
echo "sem = > Semaphore values:is yet another mechanism for support of thread or process synchronization."
printf "Do you want to change value of sem paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/sem | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.sem=$value
echo "$green Kernel.sem paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == msgmnb ];then
echo "msgmnb = > Maximum message queue in bytes"
printf "Do you want to change value of sem paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/sem | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.msgmnb=$value
echo "$green Kernel.sem paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == msgmni ];then
echo "msgmni = > Maximum allowed message queue identifiers"
printf "Do you want to change value of msgmni paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/msgmni | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.msgmni=$value
echo "$green Kernel.msgmni paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == msgmax ];then
echo "msgmax = > Maximum message size in bytes"
printf "Do you want to change value of msgmax paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/msgmax | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.msgmax=$value
echo "$green Kernel.msgmax paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == shmmni ];then
echo "shmmni = > Number of shared segments system-wide"
printf "Do you want to change value of shmmni paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/shmmni | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.shmmni=$value
echo "$green Kernel.shmmni paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == shmall ];then
echo "shmall = > Shared memory system-wide in pages"
printf "Do you want to change value of shmall paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/shmall | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.shmall=$value
echo "$green Kernel.shmall paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == shmmax ];then
echo "shmmax = > Shared segment size in bytes"
printf "Do you want to change value of shmmax paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/shmmax | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.shmmax=$value
echo "$green Kernel.shmmax paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
# Processes
if [ "$parameter" == threads-max ];then
echo "threads-max = > Maximum threads allowed in the system"
printf "Do you want to change value of threads-max paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/threads-max | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.threads-max=$value
echo "$green Kernel.threads-max paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
# Signals
if [ "$parameter" == rtsig-max ];then
echo "rtsig-max = > Maximum real-time signals"
printf "Do you want to change value of rtsig-max paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/rtsig-max | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.rtsig-max=$value
echo "$green Kernel.rtsig-max paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == rtsig-nr ];then
echo "rtsig-nr = > Number of currently queued real-time signals"
printf "Do you want to change value of rtsig-nr paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/rtsig-nr | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.rtsig-nr=$value
echo "$green Kernel.rtsig-nr paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
# Profiling/Debugging
if [ "$parameter" == sysrq ];then
echo "sysrq = > System trace request"
printf "Do you want to change value of sysrq paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/sysrq | awk '{print $1}'`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.sysrq=$value
echo "$green Kernel.sysrq paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == printk ];then
echo "printk = > Printk values [For More Info Press i ]"
printf "Do you want to change value of printk paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/printk`
echo "$blue current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.printk=$value
echo "$green Kernel.printk paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
elif [ "$response" == i ];then
echo "$orange printk parameter has four fields: console_loglevel, default_message_ loglevel,
minimum_console_level, and default_console_level. Messages with a higher priority than
console_loglevel are printed to the console. Messages without an explicit priority are
printed with default_message_loglevel priority. The minimum (highest) value to which
console_loglevel can be set is determined by the minimum_console_level parameter. The
default_console_loglevel is the default value for console_loglevel."
else
echo "$red Please Enter valid Value!!!"
fi
fi
# System
if [ "$parameter" == domainname ];then
echo "domainname = > Domain name"
printf "Do you want to change value of domainname paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/domainname`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.domainname=$value
echo "$green Kernel.domainname paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == hostname ];then
echo "hostname => Host name"
printf "Do you want to change value of hostname paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/hostname`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.hostname=$value
echo "$green Kernel.hostname paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == ostype ];then
echo "ostype = > Operating system type"
printf "Do you want to change value of ostype paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/ostype`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.ostype=$value
echo "$green Kernel.ostype paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == osrelease ];then
echo "osrelease = > Operating system release"
printf "Do you want to change value of osrelease paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/osrelease`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.osrelease=$value
echo "$green Kernel.osrelease paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == real-root-dev ];then
echo "real-root-dev = > Real root device partition"
printf "Do you want to change value of real-root-dev paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/real-root-dev`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.real-root-dev=$value
echo "$green Kernel.real-root-dev paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == version ];then
echo "version = > Kernel version"
printf "Do you want to change value of version paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/kernel/version`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w kernel.version=$value
echo "$green Kernel.version paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
# Virtual Memory
# Sysctl Prefix: vm
# /proc Prefix: /proc/sys/vm/
if [ "$parameter" == max_map_count ];then
echo "max_map_count = > Maximum number of memory map areas per process"
printf "Do you want to change value of max_map_count paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/max_map_count`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.max_map_count=$value
echo "$green Kernel.max_map_count paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == min-readahead ];then
echo "min-readahead = > Maximum I/O read-ahead size"
printf "Do you want to change value of min-readahead paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/min-readahead`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.min-readahead=$value
echo "$green Kernel.min-readahead paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == max-readahead ];then
echo "max-readahead = > Minimum I/O read-ahead size"
printf "Do you want to change value of max-readahead paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/max-readahead`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.max-readahead=$value
echo "$green Kernel.max-readahead paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
if [ "$parameter" == vm.heap-stack-gap ];then
echo "vm.heap-stack-gap = > Enforces a gap between heap and stack [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange parameter allows a gap to be enforced between the heap and the stack.
Any access to memory in the gap area causes a segmentation fault.
This action avoids silent corruption that could occur when allocating on stack runs over
the heap. The gap enforced is in number of pages."""
else
printf "Do you want to change value of vm.heap-stack-gap paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm.heap-stack-gap`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.vm.heap-stack-gap=$value
echo "$green Kernel.vm.heap-stack-gap paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == pagetable_cache ];then
echo "pagetable_cache = > Cache size per processor for page tables [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange The pagetable_cache parameter specifies low and high cache size per processor to be
used for page tables. On SMP systems, this parameter allows the system to do fast
pagetable allocations without having to acquire the vm memory lock. On a
single-CPU system, these values can be set to 0 to avoid wasting memory."""
else
printf "Do you want to change value of pagetable_cache paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/pagetable_cache`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.pagetable_cache=$value
echo "$green Kernel.pagetable_cache paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == page_cluster ];then
echo "page_cluster = > Pages to read on a page fault [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange The page_cluster parameter is used to determine the number of pages the vm can
read at once on a page fault. The number of pages is 2 ^ page_cluster. This VM
subsystem tries to reduce excessive seeks by reading multiple pages on a page
fault."""
else
printf "Do you want to change value of page_cluster paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/page_cluster`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.page_cluster=$value
echo "$green Kernel.page_cluster paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == kswapd ];then
echo "kswapd = > Swaps out memory pages to disk [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange The vm swapout daemon, kswapd, swaps out pages to disk when memory gets
fragmented or full. This is a three-field value that corresponds to tries_base, tries_min,
and swap_cluster.
The maximum number of pages kswapd tries to free at once is determined by the
tries_base field. This number is divided by 4 or 8 to determine the number of pages
(mm/vmscan.c).
The tries_min field specifies the minimum number of pages kswapd tries to free each
time it is called.
The swap_cluster field is the number of pages kswapd writes in one turn. Keeping this
value large ensures that kswapd does its I/O in large chunks and that the disk
doesn't have to seek often. If it is too large, it may cause request queue flooding."""
else
printf "Do you want to change value of kswapd paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/kswapd`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.kswapd=$value
echo "$green Kernel.kswapd paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == bdflush ];then
echo "bdflush = > Dirty page handling [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
1 - The first field, nfract, determines the percentage of dirty buffer cache to activate
bdflush. A higher value can delay disk writes for a longer time but will have to do alot of I/O when memory becomes short.
A lower value spreads I/O more evenly at the cost of frequent I/O operations. The default value is 50%.
2 - The second field, ndirty, is the maximum number of dirty blocks that bdflush can
write to disk at once. A higher value can delay I/O and can lead to I/O burst,
whereas a lower value can lead to a memory shortage as bdflush isn't awakened frequently enough.
3 - The third field, nrefill, is the number of buffers that to the list of free buffers when refill is called.
The fourth field,nref_dirt,bdflushTRies to obtain and add is the dirty buffer threshold for activating bdflush.
The sixth field, age_buffer, is the maximum time before writing out a dirty normal buffer to disk. The value is in jiffies.
The seventh field, age_super, is the maximum time before writing out a dirty super block buffer to disk."""
else
printf "Do you want to change value of bdflush paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/bdflush`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.bdflush=$value
echo "$green Kernel.bdflush paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_passes ];then
echo "vm_passes = > Memory balancing [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The vm_passes parameter is the number of vm passes before failing the memory balancing."""
else
printf "Do you want to change value of vm_passes paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_passes`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.vm_passes=$value
echo "$green Kernel.vm_passes paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_mapped_ratio ];then
echo "vm_mapped_ratio = > Pageout rate [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The vm_mapped_ratio parameter determines the pageout rate. A smaller value indicates
an early start to pageout."""
else
printf "Do you want to change value of vm_mapped_ratio paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_mapped_ratio`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.vm_mapped_ratio=$value
echo "$green Kernel.vm_mapped_ratio paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_lru_balance_ratio ];then
echo "vm_lru_balance_ratio = > Active and inactive cache ratio [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The vm_lru_balance_ratio parameter determines the balance between active and
inactive cache. A bigger value means active cache grows as active cache is rotated
slowly."""
else
printf "Do you want to change value of vm_lru_balance_ratio paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_lru_balance_ratio`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.vm_lru_balance_ratio=$value
echo "$green Kernel.vm_lru_balance_ratio paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_cache_scan_ratio ];then
echo "vm_cache_scan_ratio = > LRU queue to scan in one go [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The vm_cache_scan_ratio parameter specifies how much of inactive LRU queue is
scanned in one go. A value of 6 implies that a scan of 1/6 of the inactive list is done."""
else
printf "Do you want to change value of vm_cache_scan_ratio paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_cache_scan_ratio`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm.vm_cache_scan_ratio=$value
echo "$green Kernel.vm_cache_scan_ratio paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_vfs_scan_ratio ];then
echo "vm_vfs_scan_ratio = > VFS queues to scan in one go [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The vm_vfs_scan_ratio parameter specifies how much of VFS queues is scanned in one
go. A value of 6 implies that 1/6 of the unused inode, dentry, and dquot caches will
be freed."""
else
printf "Do you want to change value of vm_vfs_scan_ratio paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_vfs_scan_ratio`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm_vfs_scan_ratio=$value
echo "$green Kernel.vm_vfs_scan_ratio paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
fi
if [ "$parameter" == vm_gfp_debug ];then
echo "$vm_gfp_debug = > Enable to send debug messages to log"
printf "Do you want to change value of vm_gfp_debug paramater?(y/n)"
read response
if [ "$response" == y ];then
current_parameter=`cat /proc/sys/vm/vm_gfp_debug`
echo "current value is $current_parameter"
printf "Enter value you want:"
read value
if [ "$value" ];then
sudo sysctl -w vm_gfp_debug=$value
echo "$green Kernel.vm_gfp_debug paramater changed [ OK ]"
else
echo "$orange Please Enter Valid Number"
fi
elif [ "$response" == n ];then
echo "$blue You Dont want to change The value"
else
echo "$red Please Enter valid Value!!!"
fi
fi
# File system
# Sysctl Prefix: fs
# /proc Prefix: /proc/sys/fs/
if [ "$parameter" == file-max ];then
echo "file-max = > Maximum number of file descriptors [For More Info press i ]"
read info
if [ "$info" == i ];then
echo """$orange
The system file_descriptor limit is set using file-max. The descriptor limit is the
maximum number of file descriptors that any one process may open at once."""
else