Which command line tools do you use?

I like a tool called tl;dr.
It gives you basic knowledge of many commands.
On macOS it’s a good’ol brew install tldr
They also have a nodejs client, so it can be installed with npm.

EG:

❯ tldr grep

grep

Find patterns in files using regular expressions.
More information: <https://www.gnu.org/software/grep/manual/grep.html>.

- Search for a pattern within a file:
    grep "search_pattern" path/to/file

- Search for an exact string (disables regular expressions):
    grep --fixed-strings "exact_string" path/to/file

- Search for a pattern in all files recursively in a directory, showing line numbers of matches, ignoring binary files:
    grep --recursive --line-number --binary-files=without-match "search_pattern" path/to/directory

- Use extended regular expressions (supports `?`, `+`, `{}`, `()` and `|`), in case-insensitive mode:
    grep --extended-regexp --ignore-case "search_pattern" path/to/file

- Print 3 lines of context around, before, or after each match:
    grep --context|before-context|after-context=3 "search_pattern" path/to/file

- Print file name and line number for each match:
    grep --with-filename --line-number "search_pattern" path/to/file

- Search for lines matching a pattern, printing only the matched text:
    grep --only-matching "search_pattern" path/to/file

- Search stdin for lines that do not match a pattern:
    cat path/to/file | grep --invert-match "search_pattern"

If a command does not exist, you can add it with a PR on their repo.
It’s a community-based FOSS tool.

Saves me a ton of time in googling and reading man pages.

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