posix compatibility

- use awk instead of date for generating a random id for remsh
- use -f instead of -e for testing the existence of a file

1 files changed, 10 insertions, 5 deletions

diff --git a/priv/templates/extended_bin.dtl b/priv/templates/extended_bin.dtl
index 59cf692..26c18b6 100644
--- a/priv/templates/extended_bin.dtl
+++ b/priv/templates/extended_bin.dtl
@@ -29,13 +29,18 @@ find_erts_dir() {
 relx_rem_sh() {
     # Generate a unique id used to allow multiple remsh to the same node
     # transparently
-    id="remsh$(date +%s`@`echo "$NAME" | awk -F@ '{print $2}')"
+    id="remsh$(relx_gen_id)-${NAME}"
 
     # Setup remote shell command to control node
     exec "$BINDIR/erl" "$NAME_TYPE" "$id" -remsh "$NAME" -boot start_clean \
          -setcookie "$COOKIE"
 }
 
+# Generate a random id
+relx_gen_id() {
+    od -X /dev/urandom | head -n1 | cut -d ' ' -f2
+}
+
 # Control a node
 relx_nodetool() {
     command="$1"; shift
@@ -51,12 +56,12 @@ relx_start_command() {
 
 # Use $CWD/vm.args if exists, otherwise releases/APP_VSN/vm.args, or else etc/vm.args
 if [ -z "$VMARGS_PATH" ]; then
-    if [ -e "$RELEASE_ROOT_DIR/vm.args" ]; then
+    if [ -f "$RELEASE_ROOT_DIR/vm.args" ]; then
         VMARGS_PATH="$RELEASE_ROOT_DIR/vm.args"
         USE_DIR="$RELEASE_ROOT_DIR"
     else
         USE_DIR="$REL_DIR"
-        if [ -e "$REL_DIR/vm.args" ]; then
+        if [ -f "$REL_DIR/vm.args" ]; then
             VMARGS_PATH="$REL_DIR/vm.args"
         else
             VMARGS_PATH="$REL_DIR/vm.args"
@@ -69,10 +74,10 @@ mkdir -p "$RUNNER_LOG_DIR"
 
 # Use releases/VSN/sys.config if it exists otherwise use etc/app.config
 if [ -z "$CONFIG_PATH" ]; then
-    if [ -e "$USE_DIR/sys.config" ]; then
+    if [ -f "$USE_DIR/sys.config" ]; then
         CONFIG_PATH="$USE_DIR/sys.config"
     else
-        if [ -e "$REL_DIR/sys.config" ]; then
+        if [ -f "$REL_DIR/sys.config" ]; then
             CONFIG_PATH="$REL_DIR/sys.config"
         else
             CONFIG_PATH="$REL_DIR/app.config"