Page Comparison

This page should serve as a reference for the many "things Linux" we use in this course. It is by no means complete – Linux is **huge** – but offers introductions to many important topics.

...

• Macs and Linux have a Terminal program built-in
• Windows options:
  • Windows 10+
    • Command Prompt and PowerShell programs have ssh and scp (may require latest Windows updates)
      • Start menu → Search for Command
    • Putty – http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
      
      • simple Terminal and file copy programs
      • download either the Putty installer or just putty.exe (Terminal) and pscp.exe (secure copy client)
    • Windows Subsystem for Linux – Windows 10 Professional includes a Ubuntu-like bash shells
      • See https://docs.microsoft.com/en-us/windows/wsl/install-win10
      • We recommend the Ubuntu Linux distribution, but any Linux distribution will have an SSH client

Use ssh (secure shell) to login to a remote computers.

# General form:
ssh <user_name>@<full_host_name>

# For example
ssh abattenh@ls6.tacc.utexas.edu

...

...

single and double quotes

The first rule of quoting is: always enclose a command argument in quotes if it contains spaces so that the command sees the quoted text as one item. In particular, always use single ( ' ) or double ( " ) quotes when you define an environment variable whose value contains spaces.

...

# this expression will output 4 lines of text
echo "1
2
3
4"

...

backtick quoting and sub-shell evaluation

backtick ( ` ` ) evaluation quoting is one of the underappreciated wonders of Unix. The shell:

...