Cleaned up and merge other Linux snippit repo

Meged https://git.bprieshof.nl/brammp/linux into ./Linux

Linux/Script-examples/CLI_Selector.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+# Purpose: Demonstrate usage of select and case with toggleable flags to indicate choices
+# 2013-05-10 - Dennis Williamson
+
+choice () {
+    local choice=$1
+    if [[ ${opts[choice]} ]] # toggle
+    then
+        opts[choice]=
+    else
+        opts[choice]=+
+    fi
+}
+
+PS3='Please enter your choice: '
+while :
+do
+    clear
+    options=("Option 1 ${opts[1]}" "Option 2 ${opts[2]}" "Option 3 ${opts[3]}" "Done")
+    select opt in "${options[@]}"
+    do
+        case $opt in
+            "Option 1 ${opts[1]}")
+                choice 1
+                break
+                ;;
+            "Option 2 ${opts[2]}")
+                choice 2
+                break
+                ;;
+            "Option 3 ${opts[3]}")
+                choice 3
+                break
+                ;;
+            "Option 4 ${opts[4]}")
+                choice 4
+                break
+                ;;
+            "Done")
+                break 2
+                ;;
+            *) printf '%s\n' 'invalid option';;
+        esac
+    done
+done
+
+printf '%s\n' 'Options chosen:'
+for opt in "${!opts[@]}"
+do
+    if [[ ${opts[opt]} ]]
+    then
+        printf '%s\n' "Option $opt"
+    fi
+done

Linux/Script-examples/DBUG-output.sh

@@ -0,0 +1,15 @@
+# Set debug flag as desired
+DEBUG=1
+# DEBUG=0
+
+if [ "$DEBUG" -eq "1" ]; then
+  OUT='/dev/tty'
+else
+  OUT='/dev/null'
+fi
+
+# actual script use commands like this
+command > $OUT 2>&1
+
+# or like this if you need
+command 2> $OUT

Linux/Script-examples/Options-AsVar_whiptail.sh

@@ -0,0 +1,4 @@
+args=("Option 1:" "Option 1 Desription" OFF)
+args+=("Option 2: " "Option 2 Desription" OFF)
+args+=("Option 3: " "Option 3 Desription" OFF)
+option=$(whiptail --nocancel --title "Title" --checklist "Features" 11 110 5  "${args[@]}" 3>&1 1>&2 2>&3)

Linux/Script-examples/PasswordQuest.sh

@@ -0,0 +1,72 @@
+function PasswordQuest {
+passdiaone=$(whiptail --nocancel --passwordbox "Please enter your password (Requires 8 chars, uper & lower case, special and numerical)" 11 91 --title "Config" 3>&1 1>&2 2>&3)
+if [ -z $passdiaone ]; then PasswordQuest; fi
+if [[ ${#passdiaone} -ge 8 && "$passdiaone" == *[[:lower:]]* && "$passdiaone" == *[[:upper:]]* && "$passdiaone" == *[0-9]* && "$passdiaone" == *['!'@#%^\&*()_+]* ]]; then
+    PasswordCheck
+else
+    whiptail --ok-button Done --msgbox "   Password is invalid!" 10 30
+    unset passdiaone
+    PasswordQuest
+fi
+}
+
+function PasswordCheck {
+#Checking password
+passdiatwo=$(whiptail --nocancel --passwordbox "                         Please re-enter your password" 11 82 --title "Config" 3>&1 1>&2 2>&3)
+if [ -z $passdiatwo ]; then
+    PasswordCheck
+    else
+    if [ $passdiaone != $passdiatwo ]; then
+        whiptail --ok-button Done --msgbox " Password does not match!" 10 30
+        PasswordQuest
+    else
+        echo "Pass okay" 
+        password="$passdiaone"
+        unset passdiaone passdiatwo
+    fi
+fi
+}
+
+
+
+function LegacyPasswordQuest {
+echo "Enter password (Requires: 8 chars, 1 capital and 1 num)"
+read -s passdiaone
+if [ -z $passdiaone ]; then LegacyPasswordQuest; fi
+if [[ ${#passdiaone} -ge 8 && "$passdiaone" == *[[:lower:]]* && "$passdiaone" == *[[:upper:]]* && "$passdiaone" == *[0-9]* && "$passdiaone" == *['!'@#%^\&*()_+]* ]]; then
+    LegacyPasswordCheck
+else
+    echo "   Password is invalid!"
+    unset passdiaone
+    LegacyPasswordQuest
+fi
+}
+
+function LegacyPasswordCheck {
+#Checking password
+echo "Please re-enter your password"
+read -s passdiatwo
+if [ -z $passdiatwo ]; then
+    LegacyPasswordCheck
+else
+    if [ $passdiaone != $passdiatwo ]; then
+        echo "Password does not match!"
+        LegacyPasswordQuest
+    else
+        echo "Pass okay" 
+        password="$passdiaone"
+        unset passdiaone passdiatwo
+    fi
+fi
+}
+
+
+##Uncomment for Legacy
+#LegacyPasswordQuest
+
+##Uncomment for Whiptail
+#PasswordQuest
+
+
+#Retrun
+echo "$password" 

Linux/Script-examples/VarModifiers.sh

@@ -0,0 +1,6 @@
+option="${option// /}"	 #Removes Spaces
+option="${option/:/ }"   #First : to Space
+option="${option//:/ }"  #All : to Space
+option="${option//:}"    #Removes :
+option="${option,,}"	 #Removes LowerCase
+option="${option//'"'}"  #Removes "

Linux/Script-examples/bash-script-Flag.sh

@@ -0,0 +1,17 @@
+if [ "$1" != "-l" ]; then
+  echo "Normal mode"
+  IMODE=n
+  fi
+
+if [ "$1" = "-l" ]; then
+  echo "Legacy mode";
+  IMODE=l
+fi
+
+
+
+if [ $IMODE = n ]; then
+ echo "New Menu"
+elif [ $IMODE = l ]; then
+ echo "Legacy Menu"
+fi

Linux/Script-examples/curl-Functions-authchecker.md

@@ -0,0 +1,73 @@
+# Authchecker functions for curl
+## curl keeps asking for password until correct, and downloads file
+
+```
+function getcurlsec { 
+
+local curlurl="$1"
+local curluser="$2"
+local curloutput="$3"
+
+while true; do
+    curl --fail  --user "$curluser" "$curlurl" -o "$curloutput"
+    local EC=$?
+    if [ $EC -eq 0 ]; then
+        break
+    fi
+done
+
+}
+```
+
+Syntax: `getcurlsec <url to download> <username> <output file>`
+
+
+## curl downloads file using given credentials
+
+```
+function getcurlsecwpassword { 
+
+local curlurl="$1"
+local curluser="$2"
+local curlpassword="$3"
+local curloutput="$4"
+    curl --fail  --user "$curluser":"$curlpassword" "$curlurl" -o "$curloutput"
+    local EC=$?
+    if [ $EC -eq 0 ]; then
+        echo "Password correct" 
+    else
+     echo "Password incorrect"
+    fi
+}
+```
+
+Syntax: `getcurlsecwpassword <url to download> <username> <password> <output file>`
+
+
+## curl keeps asking for password until correct, and stores username and password as var
+
+```
+function checkusercurl { 
+
+local curlurl="$1"
+curluser="$2"
+
+while true; do
+	read -s -p "Enter password for user $curluser: " curlpassword
+	echo "";
+    curl -s --fail  --user "$curluser":"$curlpassword" "$curlurl" -o /dev/null
+    local EC=$?
+    if [ $EC -eq 0 ]; then
+        echo "Password correct" 
+		break
+    fi
+	echo "Incorrect password" 
+	unset curlpassword
+done
+
+}
+```
+
+Syntax:  `checkusercurl <url to authenticate against> <username>`  
+username wil become var: curluser  
+password wil become var: $curlpassword