CT320 IQ 04

Show Main.IQ04 as a slide show.

crontab

A crontab line contains these fields, in order:

1. second minute hour day-of-month month weekday command
2. minute hour day-of-month month weekday command
3. hour day-of-month month command
4. weekday month day-of-month hour minute second command

crontab

What indicates Wednesday, in a crontab?

1. 1
2. 2
3. 3
4. 4
5. 5
6. Wed

Which commands will show the date?

date >now
ln now a
ln -s now b
rm now
cat a
cat b

1. cat a will work, cat b will fail
2. cat a will fail, cat b will work
3. Both will work
4. Both will fail
5. Those ln commands are backwards.

Blocks

Assume that a filesystem uses 1MB blocks. How many blocks (direct, indirect, whatever) does an inode need to store a 100MB file?

1. 99
2. 100
3. 101
4. 102
5. can’t say, given only this information

Filetype

If ls -l reports a filetype of s, that means it’s a:

1. socket
2. symlink
3. SATA
4. swap

symlink is l, socket is s

End-of-file

Which byte indicates end-of-file, in a disk file?

1. NUL, ␀, control-@, ASCII 00₁₆
2. EOT, ␄, control-D, ASCII 04₁₆
3. SUB, ␚, control-Z, ASCII 1A₁₆
4. Some other value
5. None of the above

Dependencies

Consider X (the X Window System) and gedit, a graphical editor.

1. X depends on gedit
2. gedit depends on X
3. Neither depends on the other.
4. They don’t depend upon each other, but are very good friends and have a supportive relationship.

Package

What is the suffix for a package file on Xubuntu?

1. .apk
2. .deb
3. .pkg
4. .rpm
5. .zip