Basic Linux Seminar

January 16, 2017 from 10am to 12pm, B107 Van Vleck

Connecting to a linux machine via ssh.

• hand out account credentials for non-math attendees
• explain Linux vs. Unix, open source

Using SCP to move items from your machine to the server, using sFTP, Filezilla, SecureFX

• Terminal on mac, linux
• download and install SSH program (like SecureCRT) for Windows.

pwd

• landing zone
• where am I

cd

• changing directories
• shortcuts for changing directories
  • ~, ., ..,
• tab completion

Creating/removing directories

• mkdir
• rmdir

Creating files

• touch
• nano nameoffile
• nano is a simple (and one of many) text editor, vi, emacs, joe, etc.

Moving/Copying/Deleting files

• mv
• cp
• rm

Listing contents of your directory

• ls
  • does not show hidden files/folders
• use of option flags to see more
• ls -l
• ls -la
  • does show hidden files/folders
• ls -last
  • shows most recently changed/create at top

Permissions

• ls -l shows you the permissions
• discussion of what those permissions mean.
  • letter method
  • number method
• chmod changing permissions

Man command Less command Grep command Piping cron

1. make your own script

• alias command
• writing an actual file, making it executable, and running it.

1. quota command; du -s subdir
2. locate command