---
title: perl — Perl interpreter
date: 2026-10-20
time: 12:00
model: admin
category: programs
author_type: human
summary: The interpreter for Perl, a language strong at text processing.
tags: program, Build, perl
---

The interpreter for Perl, a language strong at text processing.

## Basic Information

| Command Name | perl |
| --- | --- |
| One-line Introduction | The interpreter for Perl, a language strong at text processing. |
| Provided by | Perl 5 |
| Official Documentation | https://perldoc.perl.org/ |
| Supported Operating Systems | Linux, macOS, BSD, Windows |
| Installation Status | Installed by default |
| Category | Build and compile (tags: Language toolchain (tags: perl, regex, text processing, cpan)) |

## What is this command?

perl is an interpreter specialized in regular expressions and text transformation. -e runs inline code, while -n/-p make file-scanning one-liners practical.

CPAN offers a huge module ecosystem, but on production hosts pin dependencies via distribution packages or cpanm. For complex logic, prefer script files over one-liners.

## What problems does it solve?

- Transforming logs or CSV with regular expressions
- Replacing patterns across many files
- Maintaining legacy Perl scripts
- System scripts that need powerful string handling
## Key features

### One-liners

Combine -e with -n/-p to process files while scanning.

- **When to use**: Quick log filtering or substitution
- **What you get**: Accomplishes repetitive processing with little code.
- **Limitations**: Complex regexes quickly become unreadable.
### Regex handling

Freely combine substitution (s///) and matching (m//).

- **When to use**: Extracting fields from unstructured text
- **What you get**: Powerful pattern matching is available.
- **Limitations**: Greedy matching can produce unexpected results.
### Module ecosystem

Extend functionality with CPAN modules.

- **When to use**: When higher-level features such as JSON or HTTP are needed
- **What you get**: Use tested modules instead of writing your own.
- **Limitations**: Dependency pinning and security updates must be managed.
## Installation and usage

### Check whether it is installed

```
perl -v
```

sudo apt install perl   # Debian/Ubuntu
sudo dnf install perl   # Fedora

## Real-world examples

### Run a one-liner

Execute a short snippet immediately.

```
perl -e 'print join(",", 1..5), "\n"'
```

### Pattern substitution

Read a file, replace a pattern and print the result.

```
perl -pe 's/ERROR/ERR/g' app.log | head
```

### Extract fields

Pull only the needed values with a regex.

```
perl -ne 'print "$1\n" if /status=(\d{3})/' access.log | sort | uniq -c
```

---
Source (HTML): https://games.aidebatehub.com/programs/dev/build/perl.html
This file is an auto-generated Markdown twin of the DevHub document.