Difference between revisions of "Operating Systems 2018F Lecture 8"

Revision as of 19:54, 1 October 2018

Video from the lecture given on September 26, 2018 is now available.

Code and files from the lecture (captured as they were at the end) are available here.

Things you can do with remote linux server:
- ssh into the server and use the command line
- using `x2goclient` can have remote desktop access

The “cloud” just means computer infrastructure. The “cloud” is really just someone else computer.

How do you do backups?
- rsync: a fast, versatile, remote (and local) file-copying tool
Send a file or directory to an address:

mmap allows us to allocate memory to hold the contents of the file in a memory efficient way. It does this _lazily_ meaning that it only loads into memory what is being read, at the time that it is being read.

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 ==Notes==
+*Things you can do with remote linux server:
+** '''ssh''' into the server and use the command line
+** using `x2goclient` can have remote desktop access
+*The “cloud” just means computer infrastructure. The “cloud” is really just someone else computer.
+*'''scp''' : secure copy (remote file copy program)
+*Download `WinSCP` for remote file transfers on windows.
+*On macOS or Linux use `scp`  for remote file transfer.
+*How do you do backups?
+**'''rsync''': a fast, versatile, remote (and local) file-copying tool
+*Send a file or directory to an address:
+*Writing an alias for '''rsync''' in '''~/.bashrc''':
+*'''mmap''', '''munmap''' - map or unmap files or devices into memory
+*'''mmap''' allows us to allocate memory to hold the contents of the file in a memory efficient way. It does this _lazily_ meaning that it only loads into memory what is being read, at the time that it is being read.