more portable conditon

2026-07-03 12:00:02 +01:00
parent 8519d854fb
commit 52f4ab3157
1 changed files with 1 additions and 1 deletions
@@ -87,7 +87,7 @@ do
      continue
    fi

-    if [ -z "${!var_name}" ]
+    if [ -z "$(expr "$(env | grep "^${var_name}=")" : "^${var_name}=\(.*\)\$")" ]
    then
      default_value="$(expr "${line}" : "^[[:alnum:]_]\+=\(.*\)\$")"
      read -sp "${var_name}: " ${var_name}