Midterm Review

Exam format

Category	Points per question	Number of questions	Total points
Multiple choice	1	16	16
Short answer	1	4	4
Long answer	4	1	4
Total		21	24

Final score: (Total points) / 3

What is the working directory and how do you display it?
What is the Unix standard command to rename a file?
What is tab-completion?
What Unix standard command will show you the text of a file?
What does grep do?
How do you change the working directory to your home directory?
What is the Unix command to delete a file?
How does the implementation of deleting a file work? Does it remove the file’s contents from the storage medium?
What is the difference between hard links and symbolic (soft) links?
What shell builtin can I use to check whether a shell command is a program or a shell builtin?
What Unix standard command can I use to view help for shell commands that are programs?
What shell builtin can I use to view help for other shell builtins?

How do you redirect standard (out, in) of bash command to a file? For instance, if I want to redirect grep’s (out, in) to the file grep.txt what do I type?
How do you redirect standard out from one command to another command’s standard in? For instance, if I want to count the results of find with wc, what do I type?
How can I send signals to the terminal to:
- Pause a command?
- Run a command in the background?
- Rue a command in the foreground?

What does the (target, recipe, prerequisite) of a makefile rule do?
Write a Makefile that will create a program called hello from two source files, main.c and hello.c, when make is run.
By convention, what does the clean target do?
Given a makefile, add a clean target to remove the binaries.

What git command stages a new file?
What git command creates a log of the change to a staged file to the local repository?
What git command copies commits from the local repository to the remote repository?
What git command copies commits from the remote repository to the local repository?

Use the open syscall (man 2 open, not fopen) to open a path given in the string char *filepath variable.
How do you check for and terminate the program on an error with opening a file?
Using the read syscall (man 2 read, not fopen), you already have an open file with the file descriptor stored in fd, read the first 200 bytes of the file and print it to stdout
What syscall can you use to find the (size, number of hard-links) of a file?
What syscall can you use the find the name of a file?
Write a code snippet that will print all files in a given directory, except do not print the special files “.” and “..”

Write code that creates a new process, where the original process writes “parent” and the new process writes “child”, both to stdout.
Write code that replaces the current processes running program with the stat/ls command (not the stat syscall).
Write code that uses Unix standard syscalls to create a new process that runs the ls command.
Write a program that opens a pipe and reads to and writes from it.
Write a program that redirects the standard output to a file called “output.txt”.