Merge pull request #212 from ImanJowkar/master

add script for easily managing our Linux system.

Author: Tikam02

LINUX/bash-scripts-manage-system/README.md

@@ -0,0 +1,7 @@
+#  How to Run
+
+```
+chmod +x system-management.sh
+./system-management.sh
+
+```

LINUX/bash-scripts-manage-system/system-management.sh

@@ -0,0 +1,183 @@
+#!/bin/bash
+clear
+print_style () {
+
+    if [ "$2" == "info" ] ; then
+        COLOR="96m";
+    elif [ "$2" == "success" ] ; then
+        COLOR="92m";
+    elif [ "$2" == "warning" ] ; then
+        COLOR="93m";
+    elif [ "$2" == "danger" ] ; then
+        COLOR="91m";
+    else #default color
+        COLOR="0m";
+    fi
+
+    STARTCOLOR="\e[$COLOR";
+    ENDCOLOR="\e[0m";
+
+    printf "$STARTCOLOR%b$ENDCOLOR" "$1";
+    echo ""
+}
+
+
+
+ManageProc() {
+clear
+print_style "This menu facilitates process management, making it easy for you to monitor and control processes." "info"
+sleep 1
+PS3="Choose an item: If you don’t see anything, please press Enter."
+select CHOICE in "Top 10 CPU% Usage" "Process More Than X CPU Usage(in %)" "Top 10 Memory% Usage" "Process More X Memory Usage(in %)" "Zombie Process" "Kill Process" "Exit";do
+	case $REPLY in
+		1)
+			clear
+			print_style "Below are the top 10 applications that utilize the most CPU resources." "info"
+			sleep 0.5
+			print_style "`ps -ax --sort=-%cpu --format pid,ppid,cmd,%cpu,%mem | head -n 10`"  "warning"; 
+			;;
+		2)
+			clear
+			read -p "Please input your CPU% Usage percentage like 10.0: " threshold 
+			sleep 0.5
+			print_style "`ps -ax --format pid,ppid,%cpu,%mem,cmd,user | awk -v threshold=$threshold '{ if ($3 > threshold ) print $0}'`" "warning";
+			;;
+		3)
+			clear
+			print_style "`ps ax --sort=-%mem --format pid,ppid,%cpu,%mem,cmd,user | head -n 10`" "warning"
+			;;
+
+		4)
+			clear
+			read -p "Please input your Memory% Usage percentage like: 10.0:  " threshold
+			sleep 0.5
+			print_style "`ps -ax --sort=-%mem --format pid,ppid,%cpu,%mem,cmd,user | awk -v threshold=$threshold '{if ($4 > threshold ) print $0}'`" "warning";
+			;;
+
+		5)
+			clear
+			echo This is Zombie Process, please kill them.
+			sleep 0.5
+			print_style "`ps -ax  --format pid,ppid,%cpu,%mem,cmd,stat | awk  '$6 == "Z" { print $0 }'`" "danger";
+			;;
+
+		6)
+			read -p "Enter the PID of the process which you want to delete it: " ProcessID
+			echo "here is the process-id of this PID:"
+			print_style "`ps -ax --sort=-%mem --format pid,ppid,%cpu,%mem,cmd,user | awk -v pid=$ProcessID '{if ($1== pid ) print $0}'`"  "info";
+			sleep 0.4
+			read -p "Enter the signal which you want to send it to the process: " signal
+			sleep 0.2
+			read -p "Are you sure you want to send this signal to this PID? Y|N " answer
+			case "$answer" in 
+				Y|y)
+					print_style "sending signal ($signal) to the PID ($ProcessID) in 5 second, you can press Ctrl+C to cancel it." "danger";
+					sleep 5
+					kill -$signal $ProcessID
+					if [[ $? -eq 0 ]]
+					then
+						echo "the pid: $PID is successfully killed."
+					fi
+					;;
+				N|n)
+					echo "Nothing to do "
+				;;
+
+				*)
+					print_style "Bad Input" "danger";
+				;;
+			esac
+			;;
+		7)
+			clear
+			print_style "Back to the main Menu..." "info"
+			sleep 1
+			print_style "Please press the Enter command"
+			break
+			;;
+
+			
+
+	esac
+done
+
+}
+
+
+
+ManagefileSys() {
+
+#!/bin/bash
+
+PS3="Choose an item: If you don’t see anything, please press Enter. "
+select CHOICE in "List Hard disk" "fine a file with size" "find a file" "find a pattern in files in your system"  "Quit"
+do
+	case $REPLY in
+		1)
+			lsblk -f
+			;;
+		2)
+
+			read -p "Enter the size in M-Byte: " fileSize
+			find / -type f -size +${fileSize}M -exec ls -lah {} \;
+			;;
+		3)
+			read -p "What is the name of the file you are Looking for: " fileName
+			find / -name $fileName
+			;;
+		4)
+			read -p "Enter the pattern: " pattern
+			find / -type f -name "*" -exec grep -i $pattern {} \;
+			;;
+		5)
+			clear
+			print_style "Back to the main Menu..." "info"
+			sleep 1
+			print_style "Please press the Enter command "
+			break
+			;;
+		*)
+			echo "bad input!!!"
+			;;
+	esac
+done 
+
+
+}
+
+
+
+
+
+
+PS3="What do you Want to do: "
+select fruit in "Manage your Process." "Adding a iptables rule." "Managing your filesystem." "Quit"
+do
+
+	case $REPLY in
+		1)
+			echo "Manage your Process. "
+			ManageProc
+			;;
+		2)
+			echo "Adding a iptables rule. "
+			;;
+		3)
+			echo "Managing your filesystem. "
+			ManagefileSys
+			;;
+
+		4)
+			echo "Quitting "
+			sleep 1
+			break
+			;;
+		*)
+			echo "bad input!!!"
+			;;
+	esac
+done 
+
+
+
+