paste: Merge Lines of Files
August 12th, 2024 2:08 PM Mr. Q Categories: Command
Description:The paste command merges lines of files side by side. It takes corresponding lines from each input file and joins them with a tab or another specified delimiter. Command: Sample Input file1.txt: file2.txt: Sample Output (Default): Options: Example with -d Option: To use a comma as a delimiter: Sample Output […] Read more »
uniq: Report or Filter Out Repeated Lines in a File
August 12th, 2024 2:02 PM Mr. Q Categories: Command
Description:The uniq command filters out or reports repeated lines in a file. It is often used in combination with the sort command to remove duplicates from sorted data. Command: Sample Input file.txt: Sample Output (Default): Options: Example with -c Option: To count occurrences of each line: Sample Output with -c: […] Read more »
sort: Sort Lines of Text Files
August 12th, 2024 2:01 PM Mr. Q Categories: Command
Description:The sort command sorts lines of text files in ascending or descending order based on specified criteria. By default, it sorts lines alphabetically. Command: Sample Input file.txt: Sample Output (Default Sorting): Options: Example with -r Option: To sort lines in reverse order: Sample Output with -r: Example with -n Option: […] Read more »
wc: Print Newline, Word, and Byte Counts
August 12th, 2024 2:00 PM Mr. Q Categories: Command
Description:The wc (word count) command is used to count the number of lines, words, and bytes (or characters) in a file. It can also be used to count the number of bytes or characters only. Command: Sample Input file.txt: Sample Output: Explanation: Options: Example with -l Option: To count lines […] Read more »
diff: Compare Files Line by Line
August 12th, 2024 1:43 PM Mr. Q Categories: Command
Description:The diff command compares two files line by line and outputs the differences between them. It is useful for identifying changes between files, often used in version control systems. Command: Sample Input file1.txt: file2.txt: Sample Output: Explanation: Options: Example with -u Option: To show the differences in unified format: Sample […] Read more »
comm: Compare Two Sorted Files
August 12th, 2024 1:42 PM Mr. Q Categories: Command
Description:The comm command compares two sorted files line by line and outputs three columns: Command: Sample Input file1.txt: file2.txt: Sample Output: Explanation: Options: Example with Options To display only lines that are common to both files: Sample Output with -12: This command is useful for comparing files, finding unique or […] Read more »
perl: Practical Extraction and Report Language
August 12th, 2024 12:47 PM Mr. Q Categories: Command
The perl command is a powerful programming language used for text processing, system administration, web development, and more. It provides extensive capabilities for string manipulation, file handling, and regular expressions. Command: Examples Description: Executes a Perl script that prints “Hello, World!” to the console. Sample Output: Description: Replaces all occurrences […] Read more »
sed: Stream Editor for Filtering and Transforming Text
August 12th, 2024 12:46 PM Mr. Q Categories: Command
The sed command is a stream editor used for filtering and transforming text. It processes text line by line and can perform various editing tasks, such as substitutions, deletions, and insertions. Command: Examples Description: Replaces the first occurrence of “old” with “new” in each line of filename.txt. Sample File (filename.txt): […] Read more »
xargs: Build and Execute Command Lines from Standard Input
August 12th, 2024 12:44 PM Mr. Q Categories: Command
The xargs command is used to build and execute command lines from standard input. It reads items from standard input, separated by spaces, newlines, or other delimiters, and executes a specified command with those items as arguments. Command: Examples Sample Input: Sample Output: Sample Input: Sample Output: Sample Input: Sample […] Read more »
join: Join lines of two files on a common field
August 12th, 2024 12:43 PM Mr. Q Categories: Command
The join command is used to merge lines of two files based on a common field. It is commonly used for combining data from two files with a shared key or column. Command: Examples Sample File (file1.txt): Sample File (file2.txt): Sample Output: Sample File (file1.csv): Sample File (file2.csv): Sample Output: […] Read more »