[#306796] Hash#select returns an array but Hash#reject returns a hash... — "Srijayanth Sridhar" <srijayanth@...>

Hello,

21 messages 2008/07/01
[#306820] Re: Hash#select returns an array but Hash#reject returns a hash... — Dave Bass <davebass@...> 2008/07/01

Srijayanth Sridhar wrote:

[#306822] Re: Hash#select returns an array but Hash#reject returns a hash... — "Srijayanth Sridhar" <srijayanth@...> 2008/07/01

irb(main):001:0> a=Hash.new

[#306825] Re: Hash#select returns an array but Hash#reject returns a hash... — Pe, Botp <botp@...> 2008/07/01

From: Srijayanth Sridhar [mailto:srijayanth@gmail.com]

[#306835] Re: Hash#select returns an array but Hash#reject returns a hash... — "Srijayanth Sridhar" <srijayanth@...> 2008/07/01

>

[#306838] Re: Hash#select returns an array but Hash#reject returns a hash... — "David A. Black" <dblack@...> 2008/07/01

Hi --

[#306849] Re: Hash#select returns an array but Hash#reject returns a hash... — "Rick DeNatale" <rick.denatale@...> 2008/07/01

On Tue, Jul 1, 2008 at 8:48 AM, David A. Black <dblack@rubypal.com> wrote:

[#306809] Dynamic Variables — Marc Heiler <shevegen@...>

Is there any way in ruby to create dynamic variables?

13 messages 2008/07/01

[#306908] threadify-0.0.1 — ara howard <ara.t.howard@...>

19 messages 2008/07/01

[#306924] workarounds for ruby 1.8.6 segmentations faults — liquid_rails <cheri.anaclerio@...>

Hi,

12 messages 2008/07/01

[#307014] Ranges and Enumerable problems — "Glen Holcomb" <damnbigman@...>

Okay so when I play with "!".."~" wrong things happen.

24 messages 2008/07/02
[#307018] Re: Ranges and Enumerable problems — "Robert Klemme" <shortcutter@...> 2008/07/02

2008/7/2 Glen Holcomb <damnbigman@gmail.com>:

[#307021] Re: Ranges and Enumerable problems — "Glen Holcomb" <damnbigman@...> 2008/07/02

On Wed, Jul 2, 2008 at 9:12 AM, Robert Klemme <shortcutter@googlemail.com>

[#307030] Re: Ranges and Enumerable problems — "Adam Shelly" <adam.shelly@...> 2008/07/02

On 7/2/08, Glen Holcomb <damnbigman@gmail.com> wrote:

[#307035] Re: Ranges and Enumerable problems — "Robert Dober" <robert.dober@...> 2008/07/02

On Wed, Jul 2, 2008 at 7:13 PM, Adam Shelly <adam.shelly@gmail.com> wrote:

[#307037] Re: Ranges and Enumerable problems — "Adam Shelly" <adam.shelly@...> 2008/07/02

On 7/2/08, Robert Dober <robert.dober@gmail.com> wrote:

[#307042] Re: Ranges and Enumerable problems — Robert Klemme <shortcutter@...> 2008/07/02

On 02.07.2008 19:48, Adam Shelly wrote:

[#307050] Re: Ranges and Enumerable problems — "Rick DeNatale" <rick.denatale@...> 2008/07/02

On Wed, Jul 2, 2008 at 2:27 PM, Robert Klemme <shortcutter@googlemail.com>

[#307053] Re: Ranges and Enumerable problems — "Todd Benson" <caduceass@...> 2008/07/02

On Wed, Jul 2, 2008 at 3:50 PM, Rick DeNatale <rick.denatale@gmail.com> wrote:

[#307070] Install/Enable openssl for ruby 1.8.6? — Jason Bornhoft <jbornhoft@...>

I was trying to install Redmine on rails 2.0.2 (this is not a rails

12 messages 2008/07/03

[#307080] thoughts on a more generic Array#partition function — "Rudi Cilibrasi" <cilibrar@...>

An experiment in a more generic partition function. The current

16 messages 2008/07/03
[#307083] Re: thoughts on a more generic Array#partition function — Pe, Botp <botp@...> 2008/07/03

From: Rudi Cilibrasi [mailto:cilibrar@gmail.com]

[#307088] Re: thoughts on a more generic Array#partition function — "Rudi Cilibrasi" <cilibrar@...> 2008/07/03

Hi Botp,

[#307095] Re: thoughts on a more generic Array#partition function — Pe, Botp <botp@...> 2008/07/03

From: Rudi Cilibrasi [mailto:cilibrar@gmail.com]

[#307136] Re: thoughts on a more generic Array#partition function — "Rick DeNatale" <rick.denatale@...> 2008/07/03

On Thu, Jul 3, 2008 at 12:53 AM, Pe, Botp <botp@delmonte-phil.com> wrote:

[#307101] Slide Show (S9) Gem Now Includes S5 Support (Including Built-In Gradient Themes) — "Gerald Bauer" <geraldbauer2007@...>

Hello,

21 messages 2008/07/03

[#307153] pseudo-randomize an array in a consistent order — Max Williams <toastkid.williams@...>

Does anyone know how to pseudo-randomize an array (eg with a seed) so

24 messages 2008/07/03

[#307246] Getting Folder Size — Clement Ow <clement.ow@...>

When I use File.size("C:/ruby"), all it returns is 0.

15 messages 2008/07/04

[#307284] from ruby/RoR to Java (framework unknown) :( — S2 <x@...>

My company today decided to ditch ruby development and to develop new web

35 messages 2008/07/04

[#307302] Does Ruby have any advantage over Python to create semantic applications? — Costan <CMValma@...>

Hi all,

10 messages 2008/07/04

[#307414] implementing a simple and efficient index system — Janus Bor <janus@...>

Hello everyone,

18 messages 2008/07/06
[#307415] Re: implementing a simple and efficient index system — phlip <phlip2005@...> 2008/07/06

Janus Bor wrote:

[#307585] Threads: Different behavior under Linux and Windows — Armin Armbruster <aarmbruster@...>

Hi,

13 messages 2008/07/08

[#307654] How to delete a file in Win XP — MAwiniarski <MAwiniarski@...>

Greetings,

18 messages 2008/07/09

[#307667] Thread-safe priority queue? — "Sean O'Halpin" <sean.ohalpin@...>

Hi,

13 messages 2008/07/09

[#307804] Why Ruby interpreter is writed in c (not in c++)? — "Ranieri Teixeira" <ranieri.tx@...>

Hi,

27 messages 2008/07/11
[#307807] Re: Why Ruby interpreter is writed in c (not in c++)? — phlip <phlip2005@...> 2008/07/11

Ranieri Teixeira wrote:

[#307853] Symbolify (#169) — "Matthew Moss" <matthew.moss@...>

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

78 messages 2008/07/11
[#307863] Re: [QUIZ] Symbolify (#169) — "ara.t.howard" <ara.t.howard@...> 2008/07/11

[#307870] Re: [QUIZ] Symbolify (#169) — "Alex LeDonne" <aledonne.listmail@...> 2008/07/11

On Fri, Jul 11, 2008 at 12:12 PM, ara.t.howard <ara.t.howard@gmail.com> wrote:

[#307874] Re: [QUIZ] Symbolify (#169) — "ara.t.howard" <ara.t.howard@...> 2008/07/11

[#307879] Re: [QUIZ] Symbolify (#169) — Dana Merrick <dmerrick@...> 2008/07/11

ara.t.howard wrote:

[#307882] Re: [QUIZ] Symbolify (#169) — "ara.t.howard" <ara.t.howard@...> 2008/07/11

[#307883] Re: [QUIZ] Symbolify (#169) — James Gray <james@...> 2008/07/11

On Jul 11, 2008, at 12:16 PM, ara.t.howard wrote:

[#307933] can ruby replace bash scripts for linux script — "Greg Hauptmann" <greg.hauptmann.ruby@...>

hi,

14 messages 2008/07/12

[#307962] Can't install gems after a new ubuntu install — Max Williams <toastkid.williams@...>

Sorry if this is the wrong forum...

15 messages 2008/07/12

[#307973] regular expressions help — Vivek <krishna.vivek@...>

Hi,

17 messages 2008/07/12

[#308154] Text Editor — Jacob Grover <jacob.grover@...>

Hello, I've been wondering for a long time if there's an Internet text

14 messages 2008/07/14

[#308240] Is it possible to dynamically extend Test::Unit test cases? — "David Mitchell" <monch1962@...>

Hello list,

10 messages 2008/07/15

[#308264] Array.drop doesn't work — Li Chen <chen_li3@...>

Hi all,

14 messages 2008/07/15
[#308265] Re: Array.drop doesn't work — Frederick Cheung <frederick.cheung@...> 2008/07/15

[#308370] The next number that is not in an array — Tim Conner <crofty_james@...>

I want to increment the current value of a variable to the next number

28 messages 2008/07/16
[#308381] Re: The next number that is not in an array — "David A. Black" <dblack@...> 2008/07/16

Hi --

[#308409] So who's coming to RubyFringe? — Oliver Saunders <oliver.saunders@...>

...I am! Hope you meet some of you guys over here.

11 messages 2008/07/17

[#308509] Records and Arrays (#170) — "Matthew Moss" <matthew.moss@...>

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

13 messages 2008/07/18

[#308525] Multiple GEM repositories — Rob Mauchel <rmauchel@...>

I have a Ruby script which runs fine on my own machine that I'd like to

14 messages 2008/07/18

[#308642] Does "rescue" wihtour argument handle any kind of Exception or not? — Iñaki Baz Castillo <ibc@...>

Hi, I read in this article:

17 messages 2008/07/20
[#308643] Re: Does "rescue" wihtour argument handle any kind of Exception or not? — Stefano Crocco <stefano.crocco@...> 2008/07/20

On Sunday 20 July 2008, I単aki Baz Castillo wrote:

[#308645] Re: Does "rescue" wihtour argument handle any kind of Exception or not? — Phlip <phlip2005@...> 2008/07/20

Stefano Crocco wrote:

[#308698] rdoc 2.1.0 Released — Eric Hodel <drbrain@...7.net>

rdoc version 2.1.0 has been released!

25 messages 2008/07/21
[#308723] Re: [ANN] rdoc 2.1.0 Released — Joel VanderWerf <vjoel@...> 2008/07/21

Eric Hodel wrote:

[#308750] Re: [ANN] rdoc 2.1.0 Released — Marcin Raczkowski <mailing.mr@...> 2008/07/21

I started playing with new release and frameless template doesn't work.

[#308759] Re: [ANN] rdoc 2.1.0 Released — Eric Hodel <drbrain@...7.net> 2008/07/22

On Jul 21, 2008, at 14:05 PM, Marcin Raczkowski wrote:

[#308790] Re: [ANN] rdoc 2.1.0 Released — Marcin Raczkowski <mailing.mr@...> 2008/07/22

Eric Hodel wrote:

[#308853] Re: [ANN] rdoc 2.1.0 Released — Eric Hodel <drbrain@...7.net> 2008/07/22

[#308699] protected members or explicit abstract classes? — aidy <aidy.lewis@...>

Hi,

12 messages 2008/07/21

[#308736] read CSV file using csv library — Li Chen <chen_li3@...>

Hi all,

19 messages 2008/07/21
[#308774] Re: read CSV file using csv library — "kranthi reddy" <kranthicu@...> 2008/07/22

Hey you can use faster csv instead using the standard csv ruby library.

[#308817] Re: read CSV file using csv library — Li Chen <chen_li3@...> 2008/07/22

kranthi reddy wrote:

[#308821] Re: read CSV file using csv library — "kranthi reddy" <kranthicu@...> 2008/07/22

Hi,

[#347910] Re: read CSV file using csv library — Frank Guerino <frank.guerino@...> 2009/10/07

kranthi reddy wrote:

[#347914] Re: read CSV file using csv library — Marvin Gülker <sutniuq@...> 2009/10/07

Frank Guerino wrote:

[#308761] bj and rails 2.1 - can't get bj to run jobs — dusty <dusty.doris@...>

I have been trying to setup bj with rails 2.1.0 and am having some

13 messages 2008/07/22

[#308831] simple module for "count my instances" behaviour — Julien Thewys <jt@...>

I want to make a simple module that makes its including classes

11 messages 2008/07/22

[#308847] how to capitalize a number of characters in a word — Cheyne Li <happy.go.lucky.clr@...>

Hi, there

13 messages 2008/07/22

[#308884] Is there a simple way to find a method definition? — Ruby Freak <twscannell@...>

Hi,

12 messages 2008/07/23

[#308909] circular 'require' — Shadowfirebird <shadowfirebird@...>

Hi,

29 messages 2008/07/23
[#308911] Re: circular 'require' — Stefano Crocco <stefano.crocco@...> 2008/07/23

On Wednesday 23 July 2008, Shadowfirebird wrote:

[#308919] Re: circular 'require' — Calamitas <calamitates@...> 2008/07/23

On Wed, Jul 23, 2008 at 12:18 PM, Stefano Crocco

[#308935] Re: circular 'require' — "Michael T. Richter" <ttmrichter@...> 2008/07/23

On Wed, 2008-07-23 at 20:39 +0900, Calamitas wrote:

[#308940] Re: circular 'require' — Shadowfirebird <shadowfirebird@...> 2008/07/23

I found a very easy way around it. This is what bothers me. If it's

[#308943] Re: circular 'require' — "Michael T. Richter" <ttmrichter@...> 2008/07/23

On Wed, 2008-07-23 at 22:48 +0900, Shadowfirebird wrote:

[#308944] Re: circular 'require' — Shadowfirebird <shadowfirebird@...> 2008/07/23

Yes, I can see now that in your example no order of loading will allow

[#308951] Of GUIs threads and scheduling woes — "Glen Holcomb" <damnbigman@...>

I have a small GUI app that I have written the purposes for it's creation

12 messages 2008/07/23

[#309006] differnce between .nil? , .empty?, .blank? — Sijo Kg <sijo@...>

Hi

11 messages 2008/07/24

[#309074] Simultaneously URL call, is it possible? — Toki Toki <toki84@...>

Hi to all!

22 messages 2008/07/24
[#309080] Re: Simultaneously URL call, is it possible? — matu <m@...> 2008/07/24

Toki Toki wrote:

[#309083] Re: Simultaneously URL call, is it possible? — Toki Toki <toki84@...> 2008/07/24

matu wrote:

[#309089] inline comments in future release? — Mike Schwab <mike.schwab@...>

Are inline comments a potential feature of Ruby 2.0?

25 messages 2008/07/24
[#309101] Re: inline comments in future release? — Tim Hunter <TimHunter@...> 2008/07/24

Mike Schwab wrote:

[#309111] Re: inline comments in future release? — Mike Schwab <mike.schwab@...> 2008/07/25

> If you have so much code on one line that you feel the need for inline

[#309112] Re: inline comments in future release? — "Michael W. Ryder" <_mwryder@...> 2008/07/25

Mike Schwab wrote:

[#309165] weird backsplash behaviour inside single quotes — "Michal Suchanek" <hramrach@...>

Hello

13 messages 2008/07/25
[#309170] Re: weird backsplash behaviour inside single quotes — "Todd Benson" <caduceass@...> 2008/07/25

On Fri, Jul 25, 2008 at 8:34 AM, Michal Suchanek <hramrach@centrum.cz> wrote:

[#309171] Re: weird backsplash behaviour inside single quotes — "Todd Benson" <caduceass@...> 2008/07/25

On Fri, Jul 25, 2008 at 9:33 AM, Todd Benson <caduceass@gmail.com> wrote:

[#309173] Interesting Array Initialization Typo — Maciej Tomaka <lunatyq@...>

When initializing for example : [ [1, 2], [2, 3], [3, 2] ]

12 messages 2008/07/25

[#309194] hexdump (#171) — "Matthew Moss" <matthew.moss@...>

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

13 messages 2008/07/25

[#309273] Faster Marshaling? — Greg Willits <lists@...>

Exploring options... wondering if there's anything that can replace

13 messages 2008/07/27

[#309278] deaf grandma. — Houston Barnett-gearhart <americanpragmatic@...>

i picked up ruby 2 days ago & have been bustlin' chris pine's "learn to

25 messages 2008/07/27
[#309282] Re: deaf grandma. — "Martin DeMello" <martindemello@...> 2008/07/27

On Sat, Jul 26, 2008 at 8:31 PM, Houston Barnett-gearhart

[#309322] Re: deaf grandma. — houston barnett-gearhart <americanpragmatic@...> 2008/07/27

thank you, martin, for your reply. i took your advice & wrote an

[#309341] Re: deaf grandma. — "Martin DeMello" <martindemello@...> 2008/07/28

On Sun, Jul 27, 2008 at 2:32 PM, houston barnett-gearhart

[#309343] Re: deaf grandma. — houston barnett-gearhart <americanpragmatic@...> 2008/07/28

Martin, is there any way I can get in touch with you outside of the

[#309391] Re: deaf grandma. — "Martin DeMello" <martindemello@...> 2008/07/28

On Sun, Jul 27, 2008 at 11:51 PM, houston barnett-gearhart

[#309407] Re: deaf grandma. — houston barnett-gearhart <americanpragmatic@...> 2008/07/28

I don't know why this is so hard for me to get my head around, but

[#309387] Win32ole equivalent for Mac OS X — Nathan Loyer <4namlet@...>

Is there an equivalent library for the Win32ole library on the PC? I

12 messages 2008/07/28

[#309441] Concurrent Ruby? — Kyle Murphy <kmurph79@...>

Apologies if this is a really stupid question, I am new to programming,

14 messages 2008/07/29

[#309472] libxml: is it possible not to use doctype declaration? — "ruud grosmann" <r.grosmann@...>

hi all,

17 messages 2008/07/29
[#309477] Re: libxml: is it possible not to use doctype declaration? — Phlip <phlip2005@...> 2008/07/29

ruud grosmann wrote:

[#309478] Re: libxml: is it possible not to use doctype declaration? — "ruud grosmann" <r.grosmann@...> 2008/07/29

hi Phlip,

[#309488] Re: libxml: is it possible not to use doctype declaration? — Phlip <phlip2005@...> 2008/07/29

ruud grosmann wrote:

[#309572] Re: How to do methodsoverloading in — Jeff Moore <jcmoore@...>

Sunny Bogawat wrote:

12 messages 2008/07/30

[#309589] Suggestions for improving a trivial tag parser — "Gregory Brown" <gregory.t.brown@...>

Hi folks,

11 messages 2008/07/30
[#309593] Re: Suggestions for improving a trivial tag parser — "Robert Dober" <robert.dober@...> 2008/07/30

What about

[#309627] gc doesn't collect? — Roger Pack <rogerpack2005@...>

Any ideas why:

13 messages 2008/07/31

[#309646] super with block — Lou Zell <lzell11@...>

Hi all,

17 messages 2008/07/31
[#309647] Re: super with block — "Jes俍 Gabriel y Gal疣" <jgabrielygalan@...> 2008/07/31

On Thu, Jul 31, 2008 at 11:06 AM, Lou Zell <lzell11@gmail.com> wrote:

[#309692] Re: super with block — Lou Zell <lzell11@...> 2008/07/31

> Hi,

[#309650] Help me with this Numerology code please... — Web Reservoir <webreservoir@...>

Hi,

18 messages 2008/07/31

[#309653] Cool Projects — Alasdair Bell <alasdair@...>

So, anyone working on something awesome?

31 messages 2008/07/31

[#309676] How to get special directories? — Niklas Baumstark <niklas.baumstark@...>

hi all,

18 messages 2008/07/31

[#309739] RubyGems - update made a mess - help needed with Windows — Becca Girl <cschall@...>

I just did a system update of RubyGems and it just broke my rake test. I

16 messages 2008/07/31

Re: can ruby replace bash scripts for linux script

From: Xeno Campanoli <xcampanoli@...>
Date: 2008-07-12 05:14:29 UTC
List: ruby-talk #307936
Greg Hauptmann wrote:
> hi,
> 
> I need to develop some backup scripts for my linux box. I'm ok with
> Ruby but havn't done bash scripts before.

Bash is a different kind of language, both because it's more devoted to 
handling native unix executables, but also because it's a more primitive 
and older language devoted to doing things in ways they needed to be 
done before the present price/cost of resources.

There are a lot of things you can do much more efficiently in Bash, and 
in far fewer lines.  Also, in Sysadmin land, you may find more of the 
people managing your production boxes will know Bash than Ruby. 
Probably far more.  In my shop, practically everyone is still refusing 
to use Ruby and they want me to write anything I can in Bash, when it's 
at all practical.  To a certain extent I think this kind of request has 
reasonable roots and should be taken into account.

That all being said, and despite the fact that Ruby programs can be 
longer, Ruby programs can be much more readable, IMHO, than Bash 
scripts, especially when the complexity of the program increases beyond 
a few hundred lines of code.  Now I have several Bash scripts that 
include libraries of Bash functions and the entire things are well over 
a thousand lines, and these are still reasonable pieces of software. 
Most things that size make me think of Ruby as the best long term, 
maintainable way to program.  The reasons, again IMHO, include:

	1.  A lot of general facilities which allow for clean solutions
	that would be ugly in Bash.  For instance, I recently ran into a
	Bash script that had sequences of over 10 sed commands to decode
	%nn embedded strings from an HTTP query string.  Ruby has native
	methods for this that you can depend upon.  When you write your
	own, thats gonna be delicate code subject to getting trashed in
	some quick vi edit.

	2.  Class organization, which I like to do when the programmed
	activity is best illustrated with that kind of organization, is
	nicely formalized in Ruby, and requires thought and jury-rigging
	in Bash.

	3.  Loops are very flexible in Ruby.  On the other hand, in Bash
	they may sometimes be more concise.

	4.  Structures in Ruby are generally clearer and more readable:

		if [[ x != 'y' ]]; then
			somefunction $arg1 $arg2
		else
			echo "ERROR:  blek $myevidence"
			exit 1
		fi

		vs Ruby

		if x != 'y' then
			somemethod(arg1,arg2)
		else
			raise Exception, "ERROR:  blek #{myevidence}"
		end

	The difference may not send you, but the extra little tick marks
	 and such can be a big time cost when it comes to debugging and
	maintenance.  Interpolation, as evidenced above, actually uses
	more, but is more clear and flexible, and is always the same.


> 
> Is ruby up to replacing bash shell scripts for this?  (eg calling
> commands, eg rsynch, getting responses etc?

	Yes,  but it's up to you whether you want to spend the time.  I have a 
class I call FlatAccess which has methods like:

	MYUSER=myusername
	SUDOPART = "sudo -u #{MYUSER}"

	def FlatAccess.sudo(shellcmd)
		`#{SUDOPART} #{shellcmd}`
	end

But of course you can just state the command directly like:
result = `sudo -u myusername #{shellcmd}`
---snip---

Now all that being said, there's also something called capistrano that 
does this kind of thing in Ruby for you, so if you're doing that a lot, 
it is worth looking into capistrano.  Perhaps I'll do that myself some 
time soon....

There are a lot of other facilities in native Ruby to do system stuff, 
so the more encompassing answer is:  yes.

One thing I did recently which was interesting was to use pipes and 
threads to collect output from stderr and stdout at the same time from a 
shell execution of curl.

xc

	

> 
> Thanks
> 
> 


In This Thread