use trap to delete tempfiles on exit

as discussed in #2498

home.admin/98repairMenu.sh

@@ -96,13 +96,13 @@ case $CHOICE in
     result=""
     while [ ${#result} -eq 0 ]
     do
+        trap 'rm -f "$_temp"' EXIT
         _temp=$(mktemp -p /dev/shm/)
         l1="Please enter the new name of your LND node:\n"
         l2="different name is better for a fresh identity\n"
         l3="one word, keep characters basic & not too long"
         dialog --backtitle "RaspiBlitz - Setup (${network}/${chain})" --inputbox "$l1$l2$l3" 13 52 2>$_temp
         result=$( cat $_temp | tr -dc '[:alnum:]-.' | tr -d ' ' )
-        shred -u $_temp
         echo "processing ..."
         sleep 3
     done

home.admin/BBcashoutWallet.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+trap 'rm -f "$_temp"' EXIT
+trap 'rm -f "$_error"' EXIT
 _temp=$(mktemp -p /dev/shm/)
 _error=$(mktemp -p /dev/shm/)
 

home.admin/BBconnectPeer.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+trap 'rm -f "$_temp"' EXIT
+trap 'rm -f "$_error"' EXIT
 _temp=$(mktemp -p /dev/shm/)
 _error=$(mktemp -p /dev/shm/)
 

home.admin/BBcreateInvoice.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 clear
+trap 'rm -f "$_temp"' EXIT
+trap 'rm -f "$_error"' EXIT
 _temp=$(mktemp -p /dev/shm/)
 _error=$(mktemp -p /dev/shm/)
 sudo chmod 7777 ${_error} 2>/dev/null

home.admin/BBopenChannel.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+trap 'rm -f "$_temp"' EXIT
+trap 'rm -f "$_error"' EXIT
 _temp=$(mktemp -p /dev/shm/)
 _error=$(mktemp -p /dev/shm/)
 

home.admin/BBpayInvoice.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 clear
+trap 'rm -f "$_temp"' EXIT
+trap 'rm -f "$_error"' EXIT
 _temp=$(mktemp -p /dev/shm/)
 _error=$(mktemp -p /dev/shm/)
 sudo chmod 7777 ${_error} 2>/dev/null

home.admin/config.scripts/blitz.setconf.sh

@@ -11,12 +11,12 @@ else
   echo "Opening $EDITFILE"
 fi
 
+# trap to delete on any exit
+trap 'rm -f $conf' EXIT
+
 # temp conf
 conf=$(mktemp -p /dev/shm/)
 
-# trap it
-trap 'rm -f $conf' 0 1 2 5 15
-
 dialog \
 --title "Editing the $EDITFILE" \
 --editbox "$EDITFILE" 200 200 2> "$conf"

home.admin/config.scripts/blitz.setpassword.sh

@@ -17,6 +17,9 @@ if [ "$EUID" -ne 0 ]
   exit
 fi
 
+# trap to delete on any exit
+trap 'rm -f $_temp' EXIT
+
 # tempfile 
 _temp=$(mktemp -p /dev/shm/)
 

home.admin/config.scripts/cln.hsmtool.sh

@@ -64,10 +64,11 @@ function passwordToFile() {
     text="Type or paste the decryption password for the $CHAIN C-lightning wallet"
   fi
   # write password into a file in memory
+  # trap to delete on any exit
+  trap 'rm -f $data' EXIT
   # get password
   data=$(mktemp -p /dev/shm/)
-  # trap it
+
-  trap 'rm -f $data' 0 1 2 5 15
   dialog --clear \
    --backtitle "Enter password" \
    --title "Enter password" \

home.admin/config.scripts/lnd.fwdreport.sh

@@ -4,6 +4,8 @@ network=mainnet
 chain=bitcoin
 
 if [ "$1" = "-menu" ]; then
+  trap 'rm -f "$_temp"' EXIT
+  trap 'rm -f "$_error"' EXIT
   _temp=$(mktemp -p /dev/shm/)
   _error=$(mktemp -p /dev/shm/)