(fix: Core/CMDLINUX) 修正在没有 xxd 时 asenv 不生效的 bug

source/core/cmdlinux/template/command.js

@@ -4,7 +4,15 @@
 
 module.exports = (arg1, arg2, arg3) => ({
   exec: {
-    _: `ENVSTR=$(echo #{buffer::env}|xxd -r -p);
+    _: `command_exists() { command -v "$@" > /dev/null 2>&1; };
+    AENVSTR="#{buffer::env}";
+    if command_exists xxd; then 
+      ENVSTR=$(echo -n $AENVSTR|xxd -r -p); 
+    elif command_exists python3; then 
+      ENVSTR=$(echo -n $AENVSTR|python3 -c "import sys, binascii; sys.stdout.buffer.write(binascii.unhexlify(input().strip()))"); 
+    else 
+      ENVSTR=$(echo -n $AENVSTR|sed 's/\\([0-9A-F]\\{2\\}\\)/\\\\\\\\\\\\x\\1/gI'|xargs printf); 
+    fi;
     while [ $ENVSTR ]; do 
       ASLINE=\${ENVSTR%%"|||asline|||"*};
       ENVSTR=\${ENVSTR#*"|||asline|||"};