Topics: File system, Computer file systems, Hard link Pages: 2 (466 words) Published: October 24, 2012
1. Is each of the following an absolute pathname, a relative pathname, or a simple filename? a) Mile_co
b) Correspond/business/milk_co
c) /home/max
d) /home/max/literature/promo
e) ..
f) Letter.0210
2. List the commands you can use to perform these operations: a. Make your home directory the working directory
b. Identify the working directory
a. cd; b. pwd
3. If your working directory is /home/alex with a subdirectory named literature, give three sets of commands that you can use to create a subdirectory named classics under literature. Also give several sets of commands you can use to remove the classics directory and its contents. 4. The df utility displays all mounted filesystems along with information about each. Use the df utility with the –h (human-readable) option to answer the following questions.

$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda1 1.4G 242M 1.1G 18% /
/dev/hda3 23M 11M 10M 51% /boot
/dev/hda4 1.5G 1.2G 222M 85% /home
/dev/hda7 564M 17M 518M 4% /tmp
/dev/hdc1 984M 92M 842M 10% /gc1
/dev/hdc2 16G 13G 1.9G 87% /gc2
a. How many filesystems are mounted on your Linux system?
b. Which filesystem stores your home directory?
c. Assuming that your answer to exercise 4a is two or more, attempt to create a hard link to a file on another filesystem. What error message do you get? What happens when you attempt to create a symbolic link to the file instead?

Following are sample answers to these questions. Your answers will be different because your filesystems are different. a. six; b. /dev/hda4; c. ln: creating hard link '/tmp/xxx' to 'xxx': Invalid cross-device link. No problem creating a cross-device symbolic link.2 Answers to Even-Numbered Exercises 5. Suppose that you have a file that is linked to a file owned by another user. How can you ensure that changes to the file are no longer...
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