Unix Shell

Ruby
1

I’m new to RUBY, but am familar with other scripting languages, PHP,
Perl, Wscript, etc. I’d like to be able to run items from the shell
such as ls -l > dirlisting.txt. Just an example. Can I do this?

I would have just used the search on these forums, but unfortuantely
when I click Search I get “The page cannot be found”. Hope they can
get this fixed so I won’t have to ask every little question.

Thanks in advance.
-Greg

2

Greg Johnson wrote:

I’d like to be able to run items from the shell
such as ls -l > dirlisting.txt. Just an example. Can I do this?

Try the Pickaxe book, the first edition is available on-line in pdf
format. You can pass commands to the shell directly using back ticks s -l > dirlisting.txt or the %x expansion %x{echo “me, me, me…”}

Regards,
Jim

3

On Fri, Mar 03, 2006 at 12:23:08AM +0900, Greg Johnson wrote:
} I’m new to RUBY, but am familar with other scripting languages, PHP,
} Perl, Wscript, etc. I’d like to be able to run items from the shell
} such as ls -l > dirlisting.txt. Just an example. Can I do this?
}
} I would have just used the search on these forums, but unfortuantely
} when I click Search I get “The page cannot be found”. Hope they can
} get this fixed so I won’t have to ask every little question.

There are two ways. One way:

file_list = ls -l.scan(/^.*$/)[1…-1]
file_list.each { |line|
puts “permissions for #{line[49…-1]} are #{line[1…9]}”
}

The other way:

system(‘ls -l > dirlisting.txt’)

} Thanks in advance.
} -Greg
–Greg

4

Greg Johnson wrote:

Thanks for the tips, they work like a charm. Does anyone know why the
search functionality doesn’t work?

Not sure, but this search does:
http://dir.gmane.org/gmane.comp.lang.ruby.general

5

Thanks for the tips, they work like a charm. Does anyone know why the
search functionality doesn’t work?

6

Gregory S. wrote:

file_list = ls -l.scan(/^.*$/)[1…-1]
file_list.each { |line|
puts “permissions for #{line[49…-1]} are #{line[1…9]}”
}

The other way:

system(‘ls -l > dirlisting.txt’)

There are plenty of other ways.

system “ls”, “-l”
system “bash”, “-c”, “ls -l > dirlisting.txt”
…
Dir["*"].each {|f| File.symlink? f and puts f}
…

Cheers

robert