Linux Command Reference - Online Query Tool for 600+ Commands including ls, cd, grep, find, chmod, tar, ssh, vim

Practical tool for quickly finding and learning Linux commands

Popular Tools

Developer Tools
JSON Tools
Image Processing
Doc Processing
Network Tools
Practical Tools
Text Processing
Unit Conversion

Cron Expression Generator

Cron expression configuration, easily generate Cron expressions

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Cron expression conversion description

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CSV Field Combination

CSV/Excel field combination tool

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CSV to HTML Table

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XML Formatting

Online XML formatting, validation and beautification tool

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SQL Formatting

Automatically recognize SQL syntax structure tool

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CSS Formatting

Online CSS formatting/beautification tool

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Code Formatting

Code formatting tool

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Code Highlighting

Online code highlighting tool

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Color Picker

Color picker tool

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Regular Expression Matching

Online regular expression testing with multiple matching modes

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XML Random Generator

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Timestamp Conversion

Unix timestamp and datetime conversion tool

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JWT Encode/Decode

JSON Web Token (JWT) encoding/decoding tool

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URL Encode/Decode

URL encoding/decoding tool

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Base64 Encode/Decode

Base64 text encoding/decoding tool

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HTML Encode/Decode

HTML encoding/decoding tool

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Unicode Encode/Decode

Chinese Unicode encoding conversion tool

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UTF-8 Encode/Decode

Chinese UTF-8 encoding conversion tool

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MD5 Encryption

MD5 encryption tool

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SHA Encryption

Supports multiple encryption algorithms: SHA1, SHA256, SHA384, SHA512

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HMAC/PBKDF2 Encryption

HMAC and PBKDF2 online encryption tool

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AES/DES/RC4 Encryption/Decryption

AES DES RC4 encryption/decryption tool

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Morse Code

Online Morse code tool

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Password Generation

Random password generation tool

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SQL to Entity Class

One-click generation of C# ORM model code

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Swagger to API Client

Swagger quick generation of multi-language API client/server code

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Swagger to Postman

Swagger to Postman conversion tool

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Swagger to JMeter

Swagger to JMeter testing tool

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Create .NET Core Project

One-click .NET Core 8.0 project generation tool

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Loop Generator

Online loop generation tool

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Gzip Compression/Decompression

Gzip text compression/decompression tool

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GUID/UUID Generation

Online GUID/UUID generation tool

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QR Code/Barcode

QR code/barcode generation and recognition tool

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Braille Text Encryption

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Captcha Batch Generation

Captcha batch generation tool

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Days Difference Calculator

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JSON Formatting

JSON data formatting and compression tool

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JSON Editor

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JSON Cleaner

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Excel to JSON

Excel to JSON collection tool

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CSV to JSON

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XML to JSON

XML to JSON online conversion tool

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YAML to JSON

YAML to JSON online conversion tool

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Excel to SQL

Excel to SQL insert statement tool

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JSON to Entity

JSON to entity conversion tool

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JSON to Mind Map

Online JSON to mind map conversion tool

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JSON Random Generator

Mock data generation tool

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JSON to XML

JSON to XML conversion tool

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JSON to YAML

JSON to YAML conversion tool

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JSON to CSV

JSON to CSV conversion tool

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Swagger JSON Rendering

Swagger JSON rendering tool

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CURL to Swagger JSON

CURL to Swagger JSON conversion tool

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Extract Text from Image

Extract text from images tool

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Add Watermark to Image

Image watermark adding tool

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Image Merge

Image merging tool

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Intelligent Image Matting

AI automatic background removal tool

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ID Photo Background Change

AI one-click professional ID photo generation

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Image Area Selection and Cropping

Image area selection and cropping tool

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Image Compression

Image compression tool

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Image Color Picker

Image color picker tool

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Nine Grid Image Cutting

Nine grid image cutting tool

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Image Scaling

Image scaling tool

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Image Editor

Online Image Editor

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Image Format Conversion

Comprehensive image format conversion, supports Base64 conversion

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Image URL Preview

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Rich Text Editor

Online rich text editor tool

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Online Drawing

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Online Note Manager

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WPF Note Manager

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Markdown Editor

Online Markdown editor tool

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Multi-window Text Editor

Multi-window text editing tool

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PDF Browser

PDF Browsing Tools

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Temporary Shared Space

Registration-free instant file and text sharing tool

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Online Drawing Board

Online drawing board tool

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PDF to Image

Online PDF to image conversion tool

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Office to PDF

Online Office to PDF conversion tool

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Office to Image

Online Office to image conversion tool

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Linux Command Query

Linux command query tool

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Website Certificate Query

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IP Query

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My IP address

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IP Address Random

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Online PING

Online PING tool

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URL Address Parsing

URL address parsing tool

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Screen Dead Pixel Check

Screen dead pixel check tool

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Computer Hardware Detection

Computer hardware detection tool

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Gaode Map Picker

Gaode map picker tool

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Storage Unit Converter

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WebSocket test

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Robots.txt Generate

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SEO Meta Data Extractor

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Internal/External Links

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Generate Sitemap.xml

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Supervisord Configuration Generation

Online creation of Supervisord .NET Core configuration

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SSL Certificate Generation

Quickly generate multiple formats of SSL/TLS certificates - for development use only

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Nginx Configuration Generation

Nginx configuration generation tool

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Subnet Mask Calculator

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Multi-Disk Partition Planner

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World Time View

World time viewing tool

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Global Holiday Calendar

Global holiday calendar tool

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Online Calculator

Online calculator tool

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Wubi Root View

Wubi root viewing tool

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Wubi Root Practice

Wubi root practice tool

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Typing Speed Test

Typing speed test tool

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Letter and Symbol Typing Practice

Letter and symbol typing practice tool

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Star Wars Keyboard Practice

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Keyboard Test

Keyboard testing tool

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Mouse Test

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Regular Copybook

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Idiom First Character

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Chinese Zodiac Search

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Stopwatch Timer

Support start/pause/reset timing, can record multiple split time data

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Lottery System

Professional Annual Event Lottery System

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Zero-width Character Detection

Online zero-width character detection tool

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Text Difference Comparison

Text difference highlighting comparison, real-time display of additions and deletions

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Text line break replacement

Text processing tool - remove blank lines and handle line breaks

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Text Replacement

Online text replacement tool

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Multi-line Text to Single Line

Multi-line text to single line conversion tool

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Online Text Deduplication

Online text deduplication tool

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Online Text Cleaning

Online text cleaning tool

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Online Text Line Segmentation

Online Text Line Segmentation Tool

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Letter Case Conversion

Letter case conversion tool

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ASCII Art Generation

ASCII art generation tool

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Chinese Simplified/Traditional Conversion

Chinese simplified/traditional conversion tool

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Chinese to Pinyin

Chinese to Pinyin conversion tool

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Word and Character Counter

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Exchange Rate Conversion

Exchange rate conversion tool

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Interest Rate Converter

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Commercial Loan Calculator

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Weight Unit Conversion

Weight unit conversion tool

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Length Unit Conversion

Length unit conversion tool

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Volume Unit Conversion

Volume unit conversion tool

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Temperature Unit Conversion

Temperature unit conversion tool

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Pressure Unit Conversion

Pressure unit conversion tool

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Power Unit Conversion

Power unit conversion tool

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Capacitance Unit Conversion

Capacitance unit conversion tool

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Energy Unit Conversion

Energy unit conversion tool

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Coordinate Conversion

Coordinate conversion tool

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Linux Command Viewer

Command Details

Popular Tools

Cron Expression Generator

Cron expression conversion description

CSV Field Combination

CSV to HTML Table

XML Formatting

SQL Formatting

CSS Formatting

Code Formatting

Code Highlighting

Color Picker

Regular Expression Matching

XML Random Generator

Timestamp Conversion

JWT Encode/Decode

URL Encode/Decode

Base64 Encode/Decode

HTML Encode/Decode

Unicode Encode/Decode

UTF-8 Encode/Decode

MD5 Encryption

SHA Encryption

HMAC/PBKDF2 Encryption

AES/DES/RC4 Encryption/Decryption

Morse Code

Password Generation

SQL to Entity Class

Swagger to API Client

Swagger to Postman

Swagger to JMeter

Create .NET Core Project

Loop Generator

Gzip Compression/Decompression

GUID/UUID Generation

QR Code/Barcode

Braille Text Encryption

Captcha Batch Generation

Days Difference Calculator

JSON Formatting

JSON Editor

JSON Cleaner

Excel to JSON

CSV to JSON

XML to JSON

YAML to JSON

Excel to SQL

JSON to Entity

JSON to Mind Map

JSON Random Generator

JSON to XML

JSON to YAML

JSON to CSV

Swagger JSON Rendering

CURL to Swagger JSON

Extract Text from Image

Add Watermark to Image

Image Merge

Intelligent Image Matting

ID Photo Background Change

Image Area Selection and Cropping

Image Compression

Image Color Picker

Nine Grid Image Cutting

Image Scaling

Image Editor

Image Format Conversion

Image URL Preview

Rich Text Editor

Online Drawing

Online Note Manager

WPF Note Manager

Markdown Editor

Multi-window Text Editor

PDF Browser

Temporary Shared Space

Online Drawing Board

PDF to Image

Office to PDF