---
title: Practice Questions
author: Zoey Kitt
---

Question 1
==========

Match the symbols with what they do:

:::::: columns
::: {.column width=50%}

1. `>`
2. `<`
3. `>>`
4. `|`
5. `2>`

:::
::: {.column width=50%}

a. Pipe standard output from one program to another program's standard input
b. Redirect standard error output (in some shells)
c. Redirect standard output to a file and overwrite it
d. Redirect standard output to a file and append to it
e. Redirect standard input to be from a file

:::
::::::

Question 2
==========

What is stored in `file.txt` after the following commands are run? Think about
what each command does, and think back to [Fortnight 6 of COMP 1002] to figure out
how you'd learn more about each. You may need to log on to Aviary to see the
contents of `/usr/share/dict/words`.

```shell
echo "hello " > file.txt
head -10 /usr/share/dict/words | grep 's$' | wc -l >> file.txt
```

[Fortnight 6 of COMP 1002]:
https://toolsntechniques.ca/topic06/topic-2.html