I am trying to use my Mac Terminal to scp a file from Downloads (phpMyAdmin I downloaded online) to my Amazon EC2 instance. The command I used was: scp -i myAmazonKey.pem phpMyAdmin-3.4.5-all-languages.tar.gz [email protected]:~/. The error I got: Warning: Identity file myAmazonKey.pem not accessible: No such file or directory. Permission denied (publickey). lost connection Both my … Read more
Anyone know the keyboard shortcut to copy/paste a line into a new line in Eclipse, without having to highlight the entire line? ctrl–alt–down turns my whole screen upside down (I’m on windows). Interestingly, that’s what’s specified in the windows->preferences. 25 Answers 25
import copy a = “deepak” b = 1, 2, 3, 4 c = [1, 2, 3, 4] d = {1: 10, 2: 20, 3: 30} a1 = copy.copy(a) b1 = copy.copy(b) c1 = copy.copy(c) d1 = copy.copy(d) print(“immutable – id(a)==id(a1)”, id(a) == id(a1)) print(“immutable – id(b)==id(b1)”, id(b) == id(b1)) print(“mutable – id(c)==id(c1)”, id(c) == id(c1)) … Read more
list.sort() sorts the list and replaces the original list, whereas sorted(list) returns a sorted copy of the list, without changing the original list. When is one preferred over the other? Which is more efficient? By how much? Can a list be reverted to the unsorted state after list.sort() has been performed? 6 Answers 6
I have a few files in the assets folder. I need to copy all of them to a folder say /sdcard/folder. I want to do this from within a thread. How do I do it? 22 Answers 22
In bash I need to do this: take all files in a directory copy them into an existing directory How do I do this? I tried cp -r t1 t2 (both t1 and t2 are existing directories, t1 has files in it) but it created a directory called t1 inside t2, I don’t want that, … Read more
In MySQL I am trying to copy a row with an autoincrement column ID=1 and insert the data into same table as a new row with column ID=2. How can I do this in a single query? 16 Answers 16
I know the statement: create table xyz_new as select * from xyz; Which copies the structure and the data, but what if I just want the structure? 17 Answers 17
I would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that. … Read more
I have a database called foo and a database called bar. I have a table in foo called tblFoobar that I want to move (data and all) to database bar from database foo. What is the SQL statement to do this? 8 Answers 8
