How should I deal with Views URL parameter "page" in Google web master tool?

Communication is critical here. If your advisor knows what you are doing and why you are doing it, there is a much better chance that he or she will be patient with a low rate of progress.

You can communicate in a number of ways. A sit-down talk is obviously the most straightforward, but you can back up the message by putting in face time time in the office or lab, attending all lab meetings and relevant seminars and departmental events, and so forth. You can even ask for advice on how to balance classroom and research time. Sometimes an A- and research progress is better for your education than an A+ to the exclusion of everything else. (See also the threads about the relevance of your PhD grades going forward).

sed 's/ [ ]* / /g'
\_/  | \____/ | |
 |   |    |   | \- g=globally (not just one occurence)
 |   |    |   |
 |   |    |   \- to
 |   |    |
 |   |    \- from
 |   |
 |   \- s=substitute
 |
 \- program sed

The from part:

/ [ ]* /
| \_/| 
|  | \- repeated 0-infinite times
|  |
|   \- group of characters
|
\- boundary

Including the *, there are 3 quantifiers:

• 0 to infinity ? 0 or 1 times
• 1 to infinity

They normally only refer to the last character, so x* matches x, xxxx and nothing. x? matches 0 or 1 x, + matches x, xx, xxx and so on. But it can match a group of characters like [aeiou]+ or a combination, encapsulated in parens: (foo)*. The first matches iiaiaei, the second foo and foofoo.

A group can be an enumeration [aeiou] or a from-to group: [a-z] or a combination: [0-9a-fA-F:]. If you like to include the minus in the group, you have to put it at the end or beginning: [-,:].

The most used command is probably 's' for substitute. Others are 'd' for delete and 'p' for print.

Patterns are encapsulated between delimiters, normally slash.

 sed 's/foo/bar/' 

Sed works line oriented. If you like to replace one (the first) foo with bar, above command is okay. To replace all, you need 'g' for globally.

 sed 's/foo/bar/g' 

Other ways to work with sed invoke line numbers:

 sed -n '1,5p' file 

-n will not print by default, 1,5p means: print from line 1 to 5.

 sed '6,$d' file 

This is equivalent. It will delete from line 6 to end.

 sed '5q' file

is again the same: quit after line 5.

Typically for sed is, that commands are more easy to write than to read.

The best sed instruction ever.

sed 's/ [ ]* / /g'

will replace all two or greater sequences of spaces into one space, therefore all words will be space delimited.