Md Aminul Islam

Ruby Howtos

  1. Is Ruby Single Threaded
  2. nil, empty and blank in Ruby
  3. Execute Ruby Files and Commands in Console
  4. each and collect Keywords in Ruby
  5. Get Hash Value in Ruby using the fetch() Method
  6. Literal for Double-Quoted Strings in Ruby
  7. Find Array Index in Ruby
  8. Super in Ruby
  9. extend in Ruby
  10. Ruby to_sym Function
  11. yield in Ruby
  12. String Delimiters in Ruby
  13. %i and %I in Ruby
  14. Call and Send in Ruby
  15. Combine Array to String in Ruby
  16. Square Array Element in Ruby

MongoDB Howtos

  1. Auto Increment in MongoDB
  2. Generate ObjectId in MongoDB Using Java
  3. Compound Index in MongoDB
  4. Check if a Collection Exists in MongoDB Using NodeJS
  5. Compare Dates in MongoDB
  6. Compare Fields in MongoDB
  7. Find a Specific Document With Array in MongoDB
  8. Left Join in MongoDB
  9. Match Multiple Values in MongoDB
  10. Sparse Index in MongoDB
  11. Check if a Document Exists in MongoDB
  12. Query With String Length in MongoDB
  13. Remove Duplicates in MongoDB
  14. Remove Item by ID in MongoDB
  15. Remove User From Database in MongoDB
  16. Update User Password in MongoDB

SQLite Howtos

  1. Convert MySQL to SQLite
  2. Convert SQLite to MySQL
  3. Maximum Limits in SQLite
  4. Concatenate in SQLite
  5. Exit in SQLite
  6. Find Data That Contains Matching Pattern in SQLite
  7. Find Difference Between Dates in SQLite
  8. Insert Multiple Rows in SQLite
  9. Open .Sqlite File in Windows
  10. Convert String Date With Format in SQLite
  11. Create Table if Not Exists in SQLite
  12. INSERT OR IGNORE in SQLite

MySQL Howtos

  1. Duplicate a Row in MySQL
  2. LEFT JOIN on Multiple Columns in MySQL
  3. While Loop in MySQL

React Howtos

  1. Extends in React JS
  2. Add a Background Video in React JS
  3. Conditional Routing in React JS
  4. Field Validation for React-Select
  5. Add Dynamic Components in React
  6. Axios GET Header in React Native
  7. Create Editable Table in React
  8. Export Function in React
  9. Href onClick Event in React
  10. Storage in React Native
  11. Center Image in React Native
  12. Change App Name in React Native
  13. Download File in React Native
  14. Include an Image in React Native
  15. Picker Style in React Native
  16. Set Image Width in Percent in React Native
  17. Align Elements in React Native
  18. Dynamic Image in React Native
  19. For Loop in React Native
  20. Icon Button in React Native
  21. Vertical Alignment in React Native

Batch Howtos

  1. Copy Folder With Its Contents in Batch Script
  2. Run Multiple Commands Simultaneously in Batch Script
  3. Read a File Into a Variable in Batch Script
  4. Rename Part of Filename in Batch Script
  5. Error Handling in Batch Script
  6. Extract or Unzip File in Batch Script
  7. Run Batch File Remotely
  8. Run Batch Script in C#
  9. Transfer File to Raspberry Pi Using Batch Script
  10. Replace Text From File in Batch Script
  11. Move Files Using Batch Script
  12. Run Batch Script in Silent Mode
  13. Download File From URL in Batch Script
  14. Run Multiple Files in Batch Script
  15. Convert Video File Format in Batch Script
  16. Equivalent of Batch Script for macOS
  17. Connect FTP With Batch Script
  18. Recursive Xcopy in Batch Script
  19. Run CMD Commands in Batch Script
  20. Run Python File in Batch Script
  21. System-Generated Filename With Timestamp in Batch Script
  22. New Line in Batch Script
  23. Uninstall Programs in Batch Script
  24. Use Batch File to Write to a Text File
  25. Change the Current Directory in Batch Script
  26. Install MSI File in Batch Script
  27. Rename a File in Batch Script
  28. Run a Batch File With Parameters in Batch Script
  29. SendKeys in Batch Script
  30. Generate Random Numbers in Batch Script
  31. Get the Date in Batch Script
  32. Create a Function in Batch Script
  33. Declare an Array in Batch Script
  34. Get the Date and Time in Batch Script
  35. Networking in Batch Script
  36. Close Console After Opening a Program in Batch Script
  37. Exit a Batch File
  38. If ELSE Condition in Batch Script
  39. Retrieve Substring in Batch Script
  40. Send Email From Batch Script
  41. Take String Input in Batch Script
  42. Use IF ELSE and GOTO in Batch Script
  43. Add Comments in Batch Script
  44. Color in Batch Script
  45. Pause With the Enter Key in Batch Script
  46. The PAUSE Keyword in Batch Script
  47. Use //P With the SET Command in Batch Script
  48. Use of @ in Batch Script
  49. Use the START Command in Batch Script
  50. For \F in Batch Script
  51. Run Batch (.bat) File in CMD
  52. Check if a File Exists Using Batch
  53. Concatenate Multiple Files Using Batch Script
  54. Copy file with Batch Script
  55. Declare Variables in Batch Script
  56. Delete File Using Batch Script
  57. Delete Files Older Than N Days Using Batch Script
  58. Map Network Drive in Batch Script
  59. Prompt User Input and Use Results in Batch Script
  60. Run .Exe File From the Command Prompt Using a Batch Script
  61. Run Batch Script Using a Task Scheduler
  62. The For Loop in Batch Script

PowerShell Howtos

  1. Create and Run Service in PowerShell
  2. Get AdGroupMember From Multiple Groups in PowerShell
  3. Find Registry Key in PowerShell
  4. Encode Without BOM in PowerShell
  5. Create JSON Array in PowerShell
  6. Extract Texts Using Regex in PowerShell
  7. Modify XML File Content Using PowerShell Script
  8. Nested ForEach-Object and Where-Object in PowerShell
  9. Import Certificates in PowerShell
  10. Use Get-Acl to Check Permission for a Specific User in PowerShell

Java Howtos

  1. Merge PDF in Java
  2. Pretty-Print JSON Data in Java
  3. Anagram in Java
  4. Decorator in Java
  5. Parallel Processing in Java
  6. Use Index With forEach in Java
  7. Find Unique Values in Java ArrayList
  8. Java Disable SSL Validation
  9. Static Interface in Java
  10. Covariant Return Type in Java
  11. Diamond Operator in Java
  12. Find the Day of the Week Using Zellers Congruence in Java
  13. Increment Map in Java
  14. Postfix Expression in Java
  15. Autowire in Java Spring Boot
  16. Create SSH Connection in Java
  17. Gitignore File for Java
  18. Handle Integer Overflow and Underflow in Java
  19. Optional ifPresent() in Java
  20. Parse XML to Java Object
  21. Re-Throw Exception in Java
  22. Thread-Safe Collections in Java
  23. Cacerts vs Keystore in Java
  24. Generics in Java
  25. Get First Element From List in Java
  26. String Padding in Java
  27. Closure in Java
  28. String Template in Java
  29. Throw New Exception in Java
  30. Unsigned and Signed Right Bit Shift Operator in Java
  31. Vector and ArrayList in Java
  32. Call REST API in Java
  33. Delegate in Java
  34. Downcasting in Java
  35. Ellipsis in Java
  36. Find the Index of an Element in a List Using Java
  37. Generic Interface in Java
  38. Java - Use NotNull Annotation in Method Argument
  39. Java - Use Nullable Annotation in Method Argument
  40. Java Goto
  41. JVM -XSS Option
  42. Zulu in Java
  43. Parse HTML in Java
  44. Test Private Method in Java
  45. Convert JSON Data to String in Java
  46. Get Screen Resolution in Java
  47. Natural Ordering in Java
  48. Probability in Java
  49. Fill Rectangle in Java
  50. Color Textfield Text in JavaFX
  51. Grid and Child Node Alignment in JavaFX
  52. Label Text Color in Java With JavaFx Library
  53. Clear the Canvas in JavaFX
  54. Create a Transparent Scene in JavaFX
  55. setCellValueFactory Method in JavaFX
  56. setOnAction Method in JavaFX
  57. Convert ArrayList to ObservableList in JavaFX
  58. Use the Scene Builder in JavaFX
  59. Fix the Access Restriction Error When Using JavaFX in JRE 8
  60. Move Objects in JavaFX
  61. Use KeyEvent in JavaFX
  62. Use the setAlignment Method in JavaFX

Linux Howtos

  1. NTP in Linux
  2. The ps aux Command in Linux
  3. Run a Background Process in Bash
  4. Read File Into Variable in Bash
  5. Take Optional Input Arguments in Bash
  6. Bash Profile in macOS
  7. Break Out of a Loop in Bash
  8. Print Array Elements in Bash
  9. Remove Empty Line in Bash
  10. Use Double and Single Pipes in Bash
  11. Append New Data to an Array Without Specifying the Index in Bash
  12. Check if a Variable Has a Value in Bash
  13. Clear Terminal Screen in Bash
  14. Find File Size in Bash
  15. Open Emacs in Bash
  16. Reload the .bash_profile From Command Line
  17. Remove Line From File in Bash
  18. Concatenate Multiple Files in Bash
  19. Echo to stderr in Bash
  20. Find the Current Folder Name in Bash
  21. Multi-Dimensional Array in Bash
  22. Parse XML in Bash
  23. Pass All Arguments in Bash
  24. Rename a File in Bash
  25. Sort Array in Bash
  26. Array Length in Bash
  27. Bash grep Command
  28. Bash Tee Command
  29. Division in Bash
  30. Multiline Echo in Bash
  31. Single Line if...else in Bash
  32. Call Another Script From Current Script in Bash
  33. Create an Infinite Loop in Bash
  34. Get Bash Script Filename
  35. Run Shell Script on macOS
  36. Bash fi Keyword
  37. User Input in Bash

Python How-To's

  1. ConnectionRefusedError: [Errno 61] Connection Refused in Python
  2. Solve the TypeError: An Integer Is Required in Python
  3. Importerror: Install XLRD for Excel Support in Python
  4. AttributeError: __Exit__ in Python
MD Aminul Islam avatar MD Aminul Islam avatar

Aminul Is an Expert Technical Writer and Full-Stack Developer. He has hands-on working experience on numerous Developer Platforms and SAAS startups. He is highly skilled in numerous Programming languages and Frameworks. He can write professional technical articles like Reviews, Programming, Documentation, SOP, User manual, Whitepaper, etc.

LinkedIn