updater: Replace wget to curl and other fixes

zapret/script-exec.sh

@@ -1,12 +1,16 @@
 #!/bin/sh
 # Copyright (c) 2024 remittor
-LOG_FILE=$1
-PID_FILE=$2
-shift 2
+PID_FILE=/tmp/$1.pid
+LOG_FILE=/tmp/$1.log
+ERR_FILE=/tmp/$1.err
+shift 1
 : > $LOG_FILE
+: > $ERR_FILE
 (
 	exec </dev/null >/dev/null 2>&1
 	"$@" >> $LOG_FILE 2>&1
+	echo $? > "$ERR_FILE"
+	sleep 1
 ) &
 echo $! > $PID_FILE
 exit 0