Snippet Collections

This snippet uses `sed` to search for and replace a specific pattern in a string. It looks for the phrase "the ... dog" and replaces it with "something else". The `-n` flag suppresses automatic printing, and the `p` at the end ensures that only the modified line is printed. This demonstrates pattern matching and substitution in `sed`.

This code uses `sed` to extract and manipulate a substring from the input string. It captures the word before "dog" and prints a modified sentence: "What is the dog? lazy". This demonstrates pattern matching and substitution using `sed`.

Extract the phrase "the lazy dog" from the input string using `sed`. This demonstrates pattern matching and extraction with `sed` in Bash.

Extract the word "lazy" from the sentence "The quick brown fox jumps over the lazy dog." using `sed`. This demonstrates how to use `sed` to capture and print a specific part of a string based on a pattern.

This code uses `sed` to match the first sequence of lowercase letters in the string "abc123def456" and replaces it with "First letters ==> & <==", where `&` represents the matched text. This demonstrates how to use `sed` to find and replace patterns in a string.

Replace the first occurrence of `hello` with `goodbye` in the string "Hello, hello, hello" using `sed`. The result is "Hello, goodbye, hello". This demonstrates basic string substitution with `sed`.

Replace the word `brown` with `red` in the string "The quick brown fox" using `sed`. The result is "The quick red fox". This demonstrates basic text substitution with `sed`.

The `cut` command is used to extract specific fields from a string. In the first example, it extracts the first word (`Hello`) from the string `"Hello world and good day."` using space as the delimiter. In the second example, it extracts the second field (`world`) from the string `"Hello-world-and-good-day."` using a hyphen as the delimiter. This demonstrates how to use `cut` to extract fields based on a specified delimiter.

This Bash command finds all `.swift` files in the current directory and its subdirectories, escapes spaces in file paths, and then counts the total number of lines in all the files using `wc -l`. This demonstrates how to handle filenames with spaces and perform line counting on multiple files.

Find all files in the current directory (and subdirectories) with the extensions `.swift` or `.m`. This command is useful for locating Objective-C and Swift source files in a project.

Sort the contents of `random_order.txt` and remove duplicate lines using `sort` and `uniq` commands in Bash. This demonstrates sorting and deduplicating text file content.

Count the number of occurrences of each unique line in the `sales.csv` file using the `uniq -c` command. This demonstrates how to count and display unique lines in a file.

Remove duplicate lines from the `sales.csv` file using the `uniq` command. This demonstrates filtering unique lines from a file.

Extract the second field from a comma-separated input, then sort the extracted values. This demonstrates processing and sorting data using `cut` and `sort` commands in Bash.

Sort the contents of `random_order.txt` in reverse order using the `sort` command with the `-r` flag. This demonstrates sorting a file in descending order.

Sort the contents of `random_order.txt` in ascending order using the `sort` command. This demonstrates basic file content sorting in Bash.

Display the first 5 lines of the `sales.csv` file using the `head` command. This demonstrates how to quickly preview the beginning of a file in Bash.

Extract the 5th line from the `sales.csv` file by combining `head` and `tail` commands. This demonstrates how to retrieve a specific line from a file using Bash commands.

Extract the first 5 lines from the `sales.csv` file and save them to a new file named `top_sales.csv`. This demonstrates how to use the `head` command to quickly extract a portion of a file.

Remove the file `bad_data.json` from the current directory. This command deletes the specified file.