add new scripts

Author: ruanyf

README.md

@@ -6,7 +6,9 @@ A collection of simple Bash scripts.
 1. [Process.sh](scripts/Process.sh): execute more than one command in a script
 1. [Interactive.sh](scripts/Interactive.sh): a simple but very much interactive script
 1. [Special_Pattern.sh](scripts/Special_Pattern.sh): draw a diamond pattern with dots(.)
+1. [While-Read.sh](scripts/while-read.sh): read lines from a file using while loop
 1. [Read-Menu.sh](scripts/read-menu.sh): display a menu for system information
+1. [While-Menu.sh](scripts/while-menu.sh): a repeated menu for system information
 1. [Colorfull.sh](scripts/Colorfull.sh): provide you with the output of several colours
 1. [Convertlowercase.sh](scripts/convertlowercase.sh): convert data either from the file or standard input to lowercase
 1. [Encrypt.sh](scripts/Encrypt.sh): encrypt a file/folder with password

scripts/while-menu.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+# while-menu: a menu driven system information program
+DELAY=1 # Number of seconds to display results
+while [[ $REPLY != 0 ]]; do
+    clear
+    cat <<_EOF_
+        Please Select:
+        1. Display System Information
+        2. Display Disk Space
+        3. Display Home Space Utilization
+        0. Quit
+_EOF_
+    read -p "Enter selection [0-3] > "
+    if [[ $REPLY =~ ^[0-3]$ ]]; then
+        if [[ $REPLY == 1 ]]; then
+        echo "Hostname: $HOSTNAME"
+        uptime
+        sleep $DELAY
+        fi
+    if [[ $REPLY == 2 ]]; then
+        df -h
+        sleep $DELAY
+    fi
+    if [[ $REPLY == 3 ]]; then
+        if [[ $(id -u) -eq 0 ]]; then
+            echo "Home Space Utilization (All Users)"
+            du -sh /home/*
+        else
+            echo "Home Space Utilization ($USER)"
+            du -sh $HOME
+        fi
+    sleep $DELAY
+    fi
+    else
+        echo "Invalid entry."
+        sleep $DELAY
+    fi
+done
+echo "Program terminated."

scripts/while-read.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+# while-read: read lines from a file
+while read ; do
+    printf "%s\n" $REPLY
+done < /etc/passwd