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Top Forums Shell Programming and Scripting Echo displays strange output when '?' is used Post 303046005 by bedtime on Tuesday 21st of April 2020 01:23:13 PM
Old 04-21-2020
Echo displays strange output when '?' is used

In bash or sh terminal I get this strange response when using echo.


It's really best just to give you the code:

Code:
user@localhost:~$ text="?"; echo $text
P T V
user@localhost:~$ text='?'; echo $text
P T V
user@localhost:~$ text='?'; printf "$text\n"
?

So, printf works nicely but is there a way to get printf to take the escape sequences of variables?


I think it might have happened after messing around with Gnome-Shell extensions but not sure.


Any idea why it's happening or how to get rid of it?
 

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Jifty::Manual::TutorialRest(3pm)			User Contributed Perl Documentation			  Jifty::Manual::TutorialRest(3pm)

NAME
Jifty::Manual::TutorialRest - Web Services DESCRIPTION
This builds on Jifty::Manual::Tutorial, so make sure you have a running jifty that roughly resembles the step-by-step from there. SETUP
You must add this to your site_config.yml framework: Plugins: - REST: {} See Jifty::Plugin::REST. The commands assume that you have LWP installed with the GET alias. If not, you'll need to use the longhand lwp-request -m GET, or curl, or your browser. help Make sure it is working: $ GET http://localhost:8888/=/help Accessing resources: ... You should see some text describing the services, not html (that's longhand for 404.) Check the config and restart the server. GET
Just list the models. $ GET http://localhost:8888/=/model.yml --- - MyWeblog.Model.Post List the Post schema. $ GET http://localhost:8888/=/model/Post.yml --- body: label: Content name: body readable: 1 sort_order: 1 type: text writable: 1 id: mandatory: 1 name: id readable: 1 type: serial writable: 0 title: default: Untitled post label: Title name: title readable: 1 sort_order: 0 type: text writable: 1 You did make some posts, right? $ GET http://localhost:8888/=/model/Post/id.yml --- - 1 - 2 Dump the data: $ GET http://localhost:8888/=/model/Post/id/1.yml --- body: 'This is my post, the content of which is this, which is mine.' id: 1 title: my first post $ GET http://localhost:8888/=/model/Post/id/2.yml --- body: "Content of another post. Got to go, the cat's on fire." id: 2 title: post deux POST
TODO not working Actually, it looks like it is not supposed to work this way. Why not? $ echo '--- body: "A post via web services" id: 3 title: "posting from the command-line" ' | lwp-request -m POST http://localhost:8888/=/model/Post.yml POST http://localhost:8888/=/model/Post/id/3.yml --> 404 Not Found PUT
TODO not working $ echo '--- title: "posting from the cli" ' | lwp-request -m PUT http://localhost:8888/=/model/Post/3.yml 500 Can't read entity body: Connection reset by peer DELETE
$ lwp-request -m DELETE http://localhost:8888/=/model/Post/id/3.yml --- content: {} error: ~ field_errors: {} field_warnings: {} message: Deleted success: 1 perl v5.14.2 2010-09-25 Jifty::Manual::TutorialRest(3pm)
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