Write a function that prints all filenames in a specified directory hierarchy without using either ls or find. Its output should be similar to the output of the find command:

Question

$ myfind /users/pat
/users/pat
/users/pat/bin
/users/pat/bin/ksh
/users/pat/bin/lf
/users/pat/bin/pic
/users/pat/chapt1
/users/pat/chapt1/intro
/users/pat/rje
/users/pat/rje/filel
(Hint: Bash and Korn shell functions can be recursive.)

Answer 1

#!/bin/sh

# myfind - recursively list all files and directories
# from the specified starting point


function listfiles
{
for name in $(echo $1/*)
do
echo $name
if [ -d "$name" ] ; then
listfiles "$name"
fi
done
}

if [ -z "$1" ] ; then
listfiles $(pwd)
else
listfiles "$1"
fi

exit 0