How to write an alias in csh/tcsh that can write one file with shebang?

Question

I want to write one script with my alias but not able to add bang line in my script with echo command. I tried these ways:

alias wnc 'echo "#\!/bin/csh " > cshCMD.csh; echo "ncl" >> cshCMD.csh; chmod +x cshCMD.csh; '

alias wnc "echo '#\!/bin/csh ' > cshCMD.csh; echo 'ncl' >> cshCMD.csh; chmod +x cshCMD.csh;"  

If I run these lines without alias then they work for me.

echo "#\!/bin/csh " > cshCMD.csh; echo "ncl" >> cshCMD.csh; chmod +x cshCMD.csh; 

With direct typing and using command I'll get data in file cshCMD.csh as:

• #!/bin/csh
• ncl

while when I use alias on command line as

wnc 

I got this message :

/bin/csh: Event not found

Answer 1

You need a \! in the expansion of your alias, so you must use \\! when defining it. The first backslash disappears during processing of the alias-defining command and the second one protects the ! when the alias runs.