Intro to Scripting

What is a shebang?

• A line at the end of a bash file, signalling the end of a script

• A line at the top of a script, signalling the interpreter the computer should use

• It's another word for a command in the bash language.

• It's the term for when you expand a bash variable with $variablename

What do you call the line at the top of a script that tells the computer what interpreter to use?

• "command line"

• "shell"

• "shebang"

• "modeline"

What are the first two characters in a shebang?

• #!

• ??

• !*

• #*

What does cat do?

• Prints one or more files to standard output

• Makes a cat run across the screen

• Runs binaries

• Opens a file for editing

What command lists contents in a directory?

• ls

• list

• dir

• cat

What happens if the shebang is omitted from a script?

• The script will not run

• The script will run with the default interpreter

• The script will ask the user to specify an interpreter

• The script will generate an error

What is vi?

• A text editor

• A type of shell

• A command to execute files

• The command to change file permisisons

What command changes permission bits on a file?

• allow

• chperm

• perm

• chmod

You've just written a script 'doSomething.sh'. How do you make it executable?

• exec doSomething.sh

• sh doSomething.sh

• chmod u+x doSomething.sh

• ./doSomething.sh

You have a bash script that is not executable. How can you run it anyway?

• bash scriptname.sh

• ./scriptname.sh

• vi scriptname.sh

• exec scriptname.sh