Win a copy of Testing JavaScript Applications this week in the HTML Pages with CSS and JavaScript forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Bear Bibeault
  • Ron McLeod
  • Jeanne Boyarsky
  • Paul Clapham
Sheriffs:
  • Tim Cooke
  • Liutauras Vilda
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • fred rosenberger
  • salvin francis
Bartenders:
  • Piet Souris
  • Frits Walraven
  • Carey Brown

Passing wilcard * in Runtime.exec() command

 
Ranch Hand
Posts: 36
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hey all,
I need to delete all the files that starts with ABC. For this now i'm using Runtime.exec and passing the parameter "rm -r /usr/tmp/ABC*". But amazingly it does not delete the directories. Infact if i try to delete a directory in one attempt then it seems its ok like if i pass "rm -r /usr/tmp/ABC-123".
Why the Runtime.exec() is not recognizing/allowing to pass wildcard characters? Or is there any other way to do so.

Thanks in advance.
 
Srikanth Kumar
Ranch Hand
Posts: 36
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I am using Linux/Unix machine(s)
 
author and iconoclast
Posts: 24203
43
Mac OS X Eclipse IDE Chrome
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
When you type a wildcard at a UNIX command prompt, it's the shell program (i.e., bash) that interprets it. When you use Runtime.exec() to execute rm, there's no shell involved. rm gets the asterisk character itself, and doesn't treat it as a special character.

Run a shell, and use the shell to run rm; i.e., like

Runtime.exec(new String[] { "sh", "-c", "rm /tmp/ABC*" });
 
Greenhorn
Posts: 25
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
On linux you should do something like this :

 
Greenhorn
Posts: 21
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Srikanth,

I hope you just use "rm" as example to use System.exec, as it not portable to other OS systems. Using java.io.File#delete is more safe. Of course you will have to recurse and make sure all files are delete before a directory is to be removed as well.
 
    Bookmark Topic Watch Topic
  • New Topic