Linux - BaseOS

The following is a Linux dictionary word of the day:

baseos – foundation for an installation which provides the core set of the underlying operating system functionality.

The baseos is a fundamental component in many Linux distributions.

Core Functionality: The baseos repository includes packages which are critical for basic operation of the system. This includes: kernel, system libraries, and essential utilities.

Linux - Base64

The following is a Linux dictionary word of the day:

base64 – base64 utilized to encode/decode data and print it to standard output.

-d parameter is used to decode data.

-i parameter is used when decoding to ignore non-alphabet characters.

-w used to wrap encoded lines Utilize 0 to disable line wrapping (example: -w0).

Example: base64 testfile.txt > testencode.txt

Linux - Base32

The following is a Linux dictionary word of the day:

base32 – base32 utilized to encode/decode data and then print it to standard output.

-d parameter is used to decode data

-i parameter is used when decoding to ignore non-alphabet characters

-w used to wrap encoded lines Utilize 0 to disable line wrapping (example: -w0)

Example: base32 testfile.txt > testencode.txt

Linux - Basename

The following is a Linux dictionary word of the day:

basename – strip directory and suffix from filenames.

Example: basename /usr/local/bin/

Linux - Awk

The following is a Linux dictionary word of the day:

awk – used for pattern matching, text processing and reporting.

The name Awk is derived from the last name initials of its designers: Alfred V. Aho, Peter J. Weinberger, and Brian W. Kernighan. The first version of Awk was written in 1977.

The syntax of awk is as such:

awk options 'selection_criteria { action }' input-file > output-file

Example: Using awk to show how to extract column 5 (the file size) from the output of ls -l.

ls –l | awk ‘{print $5}’

Note: notice that the output of the awk ‘{print $5}’ is the fifth column of the ls -l command

as shown for reference.

print is the command to print out output.

print $5 means print the fifth column.

Linux - Aspell

The following is a Linux dictionary word of the day:

aspell  – spell checker which checks for misspellings and allows for changes to be made.

check – argument to spell check a single file.

Example: aspell check my_file.txt

Linux - Ar

The following is a Linux dictionary word of the day:

ar – utilized to create, modify, and extract files from an archive.

-r parameter for creating an archive file.

Example: ar r archive_file_name.a *.txt