Tutorials webOS Debugging 101 - Revision history

StephanP: Added logging options for JSON values.

2011-07-25T14:29:21Z

Added logging options for JSON values.

Zelmo: Corrected the use of the grep command.

2010-07-30T20:13:26Z

Corrected the use of the grep command.

Zelmo: Fixed some punctuation and spelling. Added `tags to commands that are to be issued in PuTTY.`


2010-07-30T20:09:17Z
Fixed some punctuation and spelling. Added <code> tags to commands that are to be issued in PuTTY.

				
				
				
				
				
				← Older revision
				Revision as of 20:09, 30 July 2010
				
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− If you're results are not what you expected use JavaScripts try/catch/finally block statements to localize the problem. The first thing you want to do is get as close as possible to where you believe the error is occuring. If you're not sure where, start at the beginning. + If your results are not what you expected, use JavaScript's try/catch/finally block statements to localize the problem. The first thing you want to do is get as close as possible to where you believe the error is occurring. If you're not sure where, start at the beginning.
    
    
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  <p>connection type: ssh</p>   <p>connection type: ssh</p>
    
− <p>when command line opens type root</p> + <p>when command line opens, type <code>root</code></p>
  <p>no password just hit enter</p>   <p>no password just hit enter</p>
    
− <p>type: cat /var/log/messages | grep payment</p> + <p>type: <code>cat /var/log/messages | grep payment</code></p>
    
  <p>"payment" is the string you are searching for with grep</p>   <p>"payment" is the string you are searching for with grep</p>
    
  <p>after you log in to putty:</p>   <p>after you log in to putty:</p>
− <p>mojo.log.error writes to /var/log/messages</p> + <p>Mojo.Log.error writes to /var/log/messages</p>
    
  <p>cat: types the file out</p>   <p>cat: types the file out</p>



G33kgirl at 22:25, 12 October 2009
2009-10-12T22:25:05Z


				
				
				
				
				
				← Older revision
				Revision as of 22:25, 12 October 2009
				
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  + If you're results are not what you expected use JavaScripts try/catch/finally block statements to localize the problem. The first thing you want to do is get as close as possible to where you believe the error is occuring. If you're not sure where, start at the beginning.
  + 
  + 
  + 
  Add mojo.logs to your code and evaluate them in putty.   Add mojo.logs to your code and evaluate them in putty.
    



G33kgirl: adding/organizing debugging help for newbies
2009-09-15T04:56:52Z
adding/organizing debugging help for newbies

				
				
				
				
				
				← Older revision
				Revision as of 04:56, 15 September 2009
				
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−  
  Add mojo.logs to your code and evaluate them in putty.   Add mojo.logs to your code and evaluate them in putty.
    
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  putty.exe   putty.exe
  (for emulator)   (for emulator)
− ip address "localhost" port 5522 + <p>ip address "localhost" port 5522</p>
− connection type: ssh + <p>connection type: ssh</p>
    
− when command line opens type root + <p>when command line opens type root</p>
− no password just hit enter + <p>no password just hit enter</p>
    
− type: cat /var/log/messages | grep payment + <p>type: cat /var/log/messages | grep payment</p>
    
− "payment" is the string you are searching for with grep + <p>"payment" is the string you are searching for with grep</p>
    
− after you log in to putty: + <p>after you log in to putty:</p>
− mojo.log.error writes to /var/log/messages + <p>mojo.log.error writes to /var/log/messages</p>
    
− cat: types the file out + <p>cat: types the file out</p>
− grep: searches it for the string following grep and prints out those lines + <p>grep: searches it for the string following grep and prints out those lines</p>
− | (vertical bar): says pass the output of cat over to grep + <p>| (vertical bar): says pass the output of cat over to grep</p>
    
    
− SIDE NOTE: if you copy text into the clipboard, you can paste it into putty by right-clicking in putty. + <p>SIDE NOTE: if you copy text into the clipboard, you can paste it into putty by right-clicking in putty.</p>



G33kgirl: adding/organizing debugging help for newbies
2009-09-15T04:54:46Z
adding/organizing debugging help for newbies
New page


Add mojo.logs to your code and evaluate them in putty.



Mojo.Log.error("****V" + " my variable: " + this.variable );





putty.exe

(for emulator)

ip address "localhost" port 5522

connection type: ssh



when command line opens type root

no password just hit enter



type: cat /var/log/messages | grep payment



"payment" is the string you are searching for with grep



after you log in to putty:

mojo.log.error writes to /var/log/messages



cat: types the file out

grep: searches it for the string following grep and prints out those lines

| (vertical bar): says pass the output of cat over to grep





SIDE NOTE: if you copy text into the clipboard, you can paste it into putty by right-clicking in putty.

← Older revision		Revision as of 22:25, 12 October 2009
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		+	If you're results are not what you expected use JavaScripts try/catch/finally block statements to localize the problem. The first thing you want to do is get as close as possible to where you believe the error is occuring. If you're not sure where, start at the beginning.
		+
		+
		+
	Add mojo.logs to your code and evaluate them in putty.		Add mojo.logs to your code and evaluate them in putty.

Tutorials webOS Debugging 101 - Revision history

StephanP: Added logging options for JSON values.

Zelmo: Corrected the use of the grep command.

Zelmo: Fixed some punctuation and spelling. Added tags to commands that are to be issued in PuTTY.

G33kgirl at 22:25, 12 October 2009

G33kgirl: adding/organizing debugging help for newbies

G33kgirl: adding/organizing debugging help for newbies

Zelmo: Fixed some punctuation and spelling. Added `tags to commands that are to be issued in PuTTY.`