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adds test

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waldek 2021-05-11 07:40:16 +02:00
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certificates/essentials/test.md
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@ -221,13 +221,13 @@
* E) `touch newfile.txt afile.txt` * E) `touch newfile.txt afile.txt`
2. You want to copy a directory, `MyFiles`, to a USB flash drive that uses the FAT filesystem. The contents of `MyFiles` are as follows: 2. You want to copy a directory, `MyFiles`, to a USB flash drive that uses the FAT filesystem. The contents of `MyFiles` are as follows:
```bash ```bash
$ ls -l MyFiles/ $ ls -l MyFiles/
total 276 total 276
-rw-r--r-- 1 jen users 129840 Nov 8 15:13 contract.odt -rw-r--r-- 1 jen users 129840 Nov 8 15:13 contract.odt
-rw-r--r-- 1 rod users 42667 Nov 8 15:12 outline.pdf -rw-r--r-- 1 rod users 42667 Nov 8 15:12 outline.pdf
-rw-r--r-- 1 sam users 105979 Nov 8 15:12 Outline.PDF -rw-r--r-- 1 sam users 105979 Nov 8 15:12 Outline.PDF
``` ```
The USB flash drive is mounted at `/media/usb`, and so you type `cp -a MyFiles /media/`. What problem will occur when you attempt to copy these files? The USB flash drive is mounted at `/media/usb`, and so you type `cp -a MyFiles /media/`. What problem will occur when you attempt to copy these files?
* A) The command will fail because it tries to create links. * A) The command will fail because it tries to create links.
@ -410,10 +410,10 @@ The USB flash drive is mounted at `/media/usb`, and so you type `cp -a MyFiles /
* E) Run a spell checker on the script to ensure it contains no bugs. * E) Run a spell checker on the script to ensure it contains no bugs.
2. Describe the effect of the following short script, `cp1`, if it's called as `cp1 big.c big.cc`: 2. Describe the effect of the following short script, `cp1`, if it's called as `cp1 big.c big.cc`:
```bash ```bash
#!/bin/bash #!/bin/bash
cp $2 $1 cp $2 $1
``` ```
* A) It has the same effect as the `cp` command, copying the contents of `big.c` to `big.cc`. * A) It has the same effect as the `cp` command, copying the contents of `big.c` to `big.cc`.
* B) It compiles the C program `big.c` and calls the result `big.cc`. * B) It compiles the C program `big.c` and calls the result `big.cc`.
@ -430,12 +430,12 @@ The USB flash drive is mounted at `/media/usb`, and so you type `cp -a MyFiles /
5. True or false: Valid looping statements in Bash include `for`, `while`, and `until`. 5. True or false: Valid looping statements in Bash include `for`, `while`, and `until`.
6. True or false: The following script launches three simultaneous instances of the `terminal` program. 6. True or false: The following script launches three simultaneous instances of the `terminal` program.
```bash ```bash
#!/bin/bash #!/bin/bash
terminal terminal
terminal terminal
terminal terminal
``` ```
7. You've written a simple shell script that does nothing but launch programs. In order to ensure that the script works with most user shells, what should its first line read? 7. You've written a simple shell script that does nothing but launch programs. In order to ensure that the script works with most user shells, what should its first line read?
8. What command can you use to display prompts for a user in a shell script? 8. What command can you use to display prompts for a user in a shell script?