quiz.md

shell variable expansion quizes

Question #0

What is the variable name who contains the previous working directory path?

• OLDDIR
• OLDPWD
• PREVPWD
• PREVDIR

Question #1

Which command should I use to display the exit code of the previous command?

• echo $?
• echo ?
• echo $EXITCODE
• echo $CODE

Question #2

Which command should I use to display a variable?

• export $MYVAR
• ls $MYVAR
• cd $MYVAR
• echo $MYVAR

Question #3

Which command should I use to define a new command push for pushing in Github?

Example:

$ push 
Everything up-to-date
$

• alias push=git push
• alias push="git push"
• export push="git push"
• export push=git push