Shell Programming and Scripting

Hello, i need to make a linux command but i dont know how..
my proposal is to make a command same as pico but with comments..
for example if i enter picoc, it will run like pico but with this comments..
#==================================
#Script Name:
#By:
#Date:
#Purpose:
#:Command Line:
#====================================

help me thanks

Well, you can write a wrapper shell script for it named pico, and the wrapper can compose the header. Rename pico to something like pico.original or put the wrapper in a up-$PATH directory from the current pico. I am assuming pic does not have an attitude about its name, examining argv[0].

I'd avoid renaming pico or anything. If you really want to override pico itself, you could make it an alias like alias pico=/usr/local/sbin/picoc.sh But it sounds like he wants to just type it as picoc.

Code:

#!/bin/sh

# picoc.sh

for FILE in "$@"
do
        # Don't mangle files that already exist
        [ -e "$FILE" ] && continue

        cat <<EOF > "$FILE"
#==================================
#Script Name:
#By:
#Date:
#Purpose:
#:Command Line:
#==================================== 
EOF
done

exec pico "$@"

It goes through the list of arguments "$@", and for each file that doesn't exist, dumps the header into it.

This will cause some difference from normal pico behavior: It will create brand new files whether the pico user saves them or not. And it won't support commandline switches properly. To do that you'd have to brute-force parse each parameter one by one and decide what it means and whether it's a file the hard way -- by exacting the same as pico.