Results for “File operations & paths”
Small, practical examples. Search by task or narrow things down below.
Insert only keys absent from a destination
SQLite: NOT EXISTS supports a set-based missing-row insert in a single-writer example.
SQLite✓ Tested
Join array items with a one-character separator
Bash Scripts: A local IFS controls the separator used by the quoted star expansion.
Bash Scripts✓ Tested
Keep exec-form arguments literal
Docker / Compose: JSON exec form does not expand shell environment variables.
Docker / Compose✓ Tested
Limit a search to the immediate directory
Linux Commands: Use maxdepth with type f to exclude nested files and directories.
Linux Commands✓ Tested
Locate a value in a sorted array
Java: Use Arrays.binarySearch only after establishing ascending order.
Java✓ Tested
Make a script executable by its owner
Linux Commands: Add the owner execute bit without replacing all permission bits.
Linux Commands✓ Tested
Mount a host directory read-only
Expose existing files without allowing the container to change them.
bind mount✓ Tested
Normalize a path without requiring it to exist
Linux Commands: Use GNU realpath -m and relative-to to normalize dot segments.
Linux Commands✓ Tested
Override an image’s entrypoint at runtime
Docker / Compose: An explicit entrypoint replaces the image entrypoint for this invocation.
Docker / Compose✓ Tested
Override the process working directory
Docker / Compose: The workdir option sets the directory for the container command.
Docker / Compose✓ Tested
Pipe input into a container process
Docker / Compose: The interactive flag keeps standard input open without allocating a terminal.
Docker / Compose✓ Tested
Prepare an owned directory before dropping root
Docker / Compose: Create and chown the writable application path before USER.
Docker / Compose✓ Tested