Hide Password Entry in UNIX script:

We can use 'stty' to hide the password entry in UNIX command prompt, which is like entering password when you login to the UNIX.
stty:
'stty' sets options for your terminal
Ex :

• stty erase \^h --- set the backspace as erase key
• stty sane
• stty

Example Script:
#!/bin/ksh
echo "Please enter the pwd:"
stty -echo
read pwd
stty echo
if [ "$pwd" == "secret" ]; then
echo "u have access"
else
  echo "access denied"
fi

Sort Utility in Datastage

The type of sort the stage will carryout:

• Datastage: This used built-in DataStage sorter.do not require any additional software.
• UNIX : unix sort command is used to perform sort.

Stable Sort :

• Applies to sort utility type of Datastage,the default is true.It is set to True to guarantee that this sort operation will not rearrange records that are already in sorted dataset.
• If it is set to False no prior ordering of records is guaranteed.