alvin alexander
Nodes for the term “file”
Unix/Linux: How to get the top-level directory (only) from a file path
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Scala “split string” examples (field separator, delimiter)
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How to use ‘awk’ to print columns from a text file (in any order)
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sbt: How to show the file/directory with 'doc' and 'package' commands
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Java “file exists” testing
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Dozens of Unix/Linux 'grep' command examples
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Dozens of Unix/Linux 'find' command examples
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MySQL restore: How to restore a MySQL database from a backup
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Tell Git not to track a file any more (remove from repo)
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Java “file write” (or “file save”) methods
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scala.util.Using: How to read and write files (Using + Source)
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A Scala method to write a list of strings to a file
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A simple Scala Try, Success, Failure example (reading a file)
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Git: View the (detailed) commit history for a single file
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Git: How to compare two different versions of a file
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How to redirect Unix/Linux STDOUT and STDERR to the same file/location
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Java: How to open and read a text file with FileReader and BufferedReader
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Five good ways (and two bad ways) to read large text files with Scala
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Java “file open” and “file read” methods (examples)
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macOS: How to show a file’s character encoding
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How to use the Linux 'lsof' command to list open files
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Sorting Unix 'ls' command output by filesize
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Java temporary file: How to create and delete temporary files
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A Java program to open, read, and display an image file
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Applescript: How to open a PDF in Preview and go directly to a page
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How to use the Linux sed command to edit many files in place (and make a backup copy)
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Linux: How to get the basename from the full filename
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How to process every line in a file with a Unix/Linux shell script
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macOS ‘ls -l’ command: What does ‘@’ mean?
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Shell script error: bad interpreter - No such file or directory
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Remove non-printable ASCII characters from a file with this Unix command
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Scala/Ammonite: How to load/import a jar file into the REPL
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Unix/Linux: Find all files that contain multiple strings/patterns
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An awk script to extract source code blocks from Markdown files
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How to read a binary file with Scala (FileInputStream, BufferedInputStream)
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How to search for multiple regex patterns in many files with `ffx`
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Scala: How to use a String during testing instead of an InputStream
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Android/Java: How to get your app’s root data directory
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Scala: How to open and read text files in Scala
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Java: How to append text to a file with the FileWriter class
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Java sound: A command line Java program to play a sound file (in headless mode)
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How to create directories in Java
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Java: How to list the files in a directory
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A "tar extract multiple" tip - How to extract multiple files from a tar archive
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How to un-tar (extract) one file from a tar archive
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How to use multiple filename search patterns with Linux find
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Linux: How to find files open by a Linux process (lsof)
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A Java Properties file method
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Scala: How to search a directory tree with SimpleFileVisitor and Files.walkFileTree
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Scala code to find (and move or remove) duplicate files
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A Scala “file find” utility
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Use zgrep to grep a gzip (gz) file
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MySQL backups: How to backup a MySQL database
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MacOS: How to recover lost (deleted) system items in the Finder
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How to copy files to an Android emulator’s data directory with ‘adb push’
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Notes on how to use GraalVM profile-guided optimizations
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Android: How to load an image from a file and set on an ImageView
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Scala: How to read input from one file while writing output to another file
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Java file open, read, and write utilities
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Scala file reading performance: Line counting algorithms
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My Scala Sed project: More features, returning strings
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Mac Finder: How to create a new folder from keyboard
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A Java FileFilter example (list files in a directory with a filter)
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Perl program that reads a pipe-delimited file and prints HTML
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Perl code to read one line from a text file
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A Perl configuration file example
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How to append text to a file with Ruby
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A Linux shell script (and commands) to find large files
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A Bourne shell script that loops through all files in the current directory
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File and directory locations for Mac OS X Scala/Java applications
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A sample MacOS Bash startup file (.bash_profile)
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How to display the contents of a gzip/gz file
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Linux gzip: How to work with compressed files
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CakePHP log output (Where is it?)
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Saving Mac Stickies, the StickiesDatabase file, and syncing
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Linux: Case-insensitive file searching with locate and find
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Linux ‘find’ example: How to copy one file to many directories
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Linux ‘find’ command recipes
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Linux ‘locate’ command examples
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My “Scala Flat File Database” project now handles newline characters
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How to read and write from a file in a Linux bash shell script
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Using the Linux ‘find’ command with multiple filename patterns
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A Linux shell script to rename files with a counter and copy them
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sed on macOS: How to append multiple lines of text to an HTML or XML file
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A simple Android AsyncTask example
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The Linux wc command (word count)
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The Linux `chmod` command
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Java File IO: How to test whether a file or directory exists
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How to use the Commons IO project to create, delete, and move files and directories
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A Drupal PHP script to log database errors
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Perl file moving: How to move a file using Perl
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Ruby “glob”: How to process each file in a directory that matches a certain pattern
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Error message: mv cannot unlink remove file, operation not permitted
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Git - How to automatically `git rm` all files that have been deleted on disk
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Perl: How to test if a file exists
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A Bash ‘for’ loop to iterate over a file that has blank spaces in its lines
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Java Jar file: How to read a file from a Jar file
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AppleScript code to read file contents into a list (array)
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How to copy text from the MacOS Terminal to the clipboard
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Perl CSV file column extraction
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How to save the output from a MySQL query to a file
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IntelliJ IDEA: Keystrokes I commonly use on MacOS (OS X)
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Linux file searching: Search for text in files with find and grep commands
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vim: How to go to the last position when reopening a file
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A Ruby temporary file example
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A Java FileReader class example
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How to copy a file in Java
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Java BufferedReader examples
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iPad PDF documents: How to read, transfer, and save
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A shell script to search multiple jar files for a Java class or pattern
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Java directory list - list all files matching a filename pattern
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Sample Cobertura ant build script
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A sample ant build script for a standalone Java application
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How to process every line in a text file with Ruby
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Perl file test - How to determine whether you can read a file
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Put Perl test data in the same file as your source code
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Perl file test operators (reference)
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Perl delete - how to delete a file in a Perl script
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A Perl script to delete binary files
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Java - How to create a Jar file in an Ant target
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Ant FAQ: Ant copy task examples
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Perl “file test” characters (for if/then tests)
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Perl split function - process every word in a file
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Where is Perl looking for modules to include?
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Perl: How to extract lines from the middle of a text file
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A Perl “read file into array” example
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Perl files example - How to open and read data files with Perl
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How to read a file URL in Java and Scala
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How to log output to a file in a Scala application with Grizzled-SLF4J
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Scala: Saving/writing XML to a file
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PHP warning - Unable to load dynamic library ./apc.so (Solution)
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A software “Code Bloat” script (lines of source code per file)
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How to load (open and read) an XML file in Scala
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A long Unix "file management" tutorial page
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Use vimdiff to see the difference between multiple files
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PHP include syntax examples
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A Java FileFilter example
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A Ruby JPEG example - Use Ruby to get the date and time from a JPEG file
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A Perl “write to file” example
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Ruby stdout and stderr
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The Linux file command
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Mac Stickies backups - the Stickies database file location
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An Ant build script for web applications
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Ant WAR task - A sample Ant build script that builds a WAR file
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Perl 'split' function - how to process text data files
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Perl read file example - How to print a range of lines from a text file
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Perl split function - How to process pipe-delimited text files
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A Perl temp file example
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Perl stat - How to determine the access or modification time of a file
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Perl file date tests - How to test when a file was last accessed or modified
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Perl file write test - How to determine if you can write to a file
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Perl - How to process every file in a directory
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Perl file copy - How to copy a file using Perl
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Perl - How to process every file in a directory that matches a pattern
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How to open and sort a CSV file with Ruby
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Ruby CSV - An example of how to split CSV row data into fields
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Java: How to handle drop events to your Mac OS X Dock icon (Part 2)
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Solving the MySQL "can't create/write to file" error message
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Linux rm command man page
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Nagios error code 127, make sure your plugin actually exists
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Perl flock - file locking with Perl
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Use File::Basename to separate a filename from its directory
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How to open the Windows Explorer from WinCVS
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How to use Spotlight to search for files from a Mac OS X Terminal window
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Recovering a deleted file from CVS using Eclipse
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How to make an Ant script fail gracefully if a property file doesn't exist
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Location of the hosts file on Windows
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How to open a file and read its contents using Ruby
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A Ruby write to file example
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A Perl extract program
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Perl directories - How to work on each file in a directory
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Linux ls command - How to show the permissions and size of a directory
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LaTeX examples - my super test file
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sed command example - extract lines from a file
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Perl Excel example - A Perl program to parse Microsoft Excel XLS files
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DOS batch files to compile and run a Java program (and create a jar file)
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Ruby read file example - read a file as a string
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JRuby Java File class error message
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Perl reverse - Reverse file contents with Perl
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Finding files that Spotlight is missing
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Copy files on Mac OS X using drag-and-drop
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