shell script in unix(in bash shell) for copying a file from one location(i.e a directory), to other, without using cp command at all

Question

Can anyone help me with a shell script in unix(in bash shell) for copying a file from one location(ie a directory), to other, without using cp command at all(not using it in the script also.Any other command /utility can be used in the script).Can it be really done ? I could'nt find a way out.Any help would be appreciated...

Answer 1

Presumably you can cat and redirect the output. Since this sounds like homework, I'll leave it to you to work out the exact syntax.

Answer 2

How many options do you want?

• rcp
• scp
• dd
• perl
• python
• cat
• while / read / echo

That is nowhere near exhaustive. You can be creative...have fun!

You could use:

1. cat to create a C source file, copy.c
2. make or cc to compile it
3. And then run it to do the copying.

You could use:

1. cat /usr/bin/cp > x
2. chmod +xx
3. ./x old new

But that is probably cheating.

Answer 3

Erghm. Why?! Anyway...

cat file1 > some/other/dir/file2

Answer 4

install是一个很好的。