Fix: Unique fifo per session

Use rpid in the daemon and the scheduler to append the PID of their
common login process to the named pipe so daemons and schedulers in
other sessions won't conflict with one another.

avdd

@@ -44,9 +44,16 @@ DEFAULT_SEP_L='| '
 DEFAULT_SEP_R=' '
 DEFAULT_SUF=' '
 MOD_DIR="$(dirname "$0")"/mod
-FIFO=/tmp/avdd-fifo
+FIFO=/tmp/avdd-fifo-"$("$(dirname "$0")"/rpid $$)"
 
 mod_list="${1-${DEFAULT_MOD_LIST}}"
+
+# Check if the user needs help
+if [[ "${mod_list}" =~ ^(-h|-(-)?help)$ ]]; then
+  printf '%s' "${USAGE}" 1>&2
+  exit 0
+fi
+
 pre="${2-${DEFAULT_PRE}}"
 sep_l="${3-${DEFAULT_SEP_L}}"
 sep_r="${4-${DEFAULT_SEP_R}}"
@@ -57,12 +64,6 @@ mod_to_fn() {
   printf 'mod_%s' "${1//-/_}"
 }
 
-# Check if the user needs help
-if [[ "${mod_list}" =~ ^(-h|-(-)?help)$ ]]; then
-  printf '%s' "${USAGE}" 1>&2
-  exit 0
-fi
-
 # For each module in the list, if the module file exists then source it,
 # add its name to the ordered array, and call its function and cache the value
 declare -A stat_cache
@@ -111,6 +112,7 @@ process_cmd () {
 
 # Setup the named pipe to receive commands
 if [[ ! -p "${FIFO}" ]]; then mkfifo "${FIFO}"; fi
+# shellcheck disable=SC2064
 trap "rm -f ${FIFO}" EXIT
 
 # Each time the pipe is emptied out, the inner while loop will finish, so

avds

@@ -44,7 +44,7 @@ EXAMPLES:
                 avds 'bat,dt' m true
 "
 DAEMON=avdd
-FIFO=/tmp/"${DAEMON}"-fifo
+FIFO=/tmp/"${DAEMON}"-fifo-"$("$(dirname "$0")"/rpid $$)"
 
 # Convert integer milliseconds to floating point seconds
 ms_to_s () {