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Question

In the listing case of:

ls -al 2> myerror

puts any errors into a file called 'myerror'.

If we wanted to keep all those error messages instead of using a single greater than sign, we would use double greater than signs.

ls -al 2>> myerror

What does the 2>> do different than 2> ?

Answer

By using a single greater than sign, it would clobber the file 'myerror' if it exists, no different to standard output. By using a double greater than sign, it will append to the contents of the file called myerror.

Question

In the listing case of:

ls -al 2> myerror

puts any errors into a file called 'myerror'.

If we wanted to keep all those error messages instead of using a single greater than sign, we would use double greater than signs.

ls -al 2>> myerror

What does the 2>> do different than 2> ?

Answer

Question

In the listing case of:

ls -al 2> myerror

puts any errors into a file called 'myerror'.

If we wanted to keep all those error messages instead of using a single greater than sign, we would use double greater than signs.

ls -al 2>> myerror

What does the 2>> do different than 2> ?

Answer

If you want to change selection, open document below and click on "Move attachment"

stdin, stdout, stderr
andard error I have to use 2> It's not optional to leave off the number two (2). Leaving it off would mean that the standard output would go to "myerror", including a 2 means standard error. <span>In the listing case of: ls -al 2> myerror puts any errors into a file called 'myerror'. If we wanted to keep all those error messages instead of using a single greater than sign, we would use double greater than signs. By using a single greater than sign, it would clobber the file 'myerror' if it exists, no different to standard output. By using a double greater than sign, it will append to the contents of the file called myerror. ls -al 2>> myerror Thus the contents of 'myerror' would not be lost. stdout, stderr and using the ampersand (&) With our new found knowledge, let's try and do a couple of things with the find command.

Summary

status	not learned	measured difficulty	37% [default]	last interval [days]
repetition number in this series	0	memorised on		scheduled repetition
scheduled repetition interval		last repetition or drill

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