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31 Cards in this Set

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artificial links
An artificial link is a file that contains the name of another file and its complete path. It links to a file that is either on a different file system on the same computer or maybe even on a different computer. These links are called artificial links because the names of the files are not considered by Unix to be the actual file names.
awk
The awk file-processing utility provides an easy way to state and perform various text manipulation tasks. Using this utility, you can generate reports containing selective columns from a structured text file.
backup partition
A backup partition is a hard disk partition that is used for backing up file systems and is always encouraged to be larger than the rest of the partitions.
Berkeley Software Distribution (BSD)
Berkeley Software Distribution (BSD) is a version of Unix developed by researchers at the University of California at Berkeley, who made modifications in Unix and added utilities such as the text editor vi and the C shell. This final version after inclusion of these modifications was named BSD.
bin directory
The bin directory in the Unix file system contains the most frequently used standard Unix programs and utilities necessary for running the system. The term bin, derived from binary, indicates that the programs are in executable form.
boot block
The boot block is one of the four sections of the file system. It is termed as block 0 and is the first block of a file system. It is reserved for storing the boot procedures.
Bourne shell
The Bourne shell is the original command processor developed at AT&T and named after its developer, Stephen R. Bourne. This is the fastest and most widely used shell. The executable file name is sh. The prompt used in this shell is dollar ($).
C shell
The C shell command processor was developed by William Joy and his colleagues at the University of California at Berkeley. The shell is named after its programming language, which resembles the C programming language syntactically. By default, the percent (%) sign on the terminal displays the C shell. The executable filename is .csh.
finger
You use this command to retrieve information on all users.
finger username
You use this command to retrieve information on a specified user.
gunzip
You use this command to unzip files.
gzip
You use this command to zip files.
id
You use this command to display your username and group ID.
lp
This is a System V command. The common options of this command are -d and -n. You use this command to print a file.
lpq
This is a BSD command. The common option of this command is -P. You use this command to display print queues.
lpr
You use this command to print a file.
lprm
This command is a BSD command. The common option of this command is job number. You use this command to remove print jobs from print queues.
lpstat
The common options of this command are -s, -l, and -t. You use this command to set file permissions.
ls
The common options of this command -a, -alr, and -lrt. You use this command to list files.
pr
You use this command to prepare files for printing.
pwd
You use this command to display working directories.
rm
The common options of this command are -f and -r.
rmdir
You use this command to remove file directories or links.
tar
The common options of this command are cvf, xvf, and tvf. You use this command to archive and back up files.
tee
You use this command to send command output to files and the monitors.
touch
You use this command to create empty files and update the access time.
unmask
You use this command to set default file creation permissions.
uname
The common option of this command is -a. You use this command to display information on your machine.
Uncompress
You use this command to uncompress files.
vi
You use this command to use the visual text editor.
w
You use this command to display the tasks that users are currently carrying out on the system.