Results for “File operations & archives”
Small, practical examples. Search by task or narrow things down below.
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
Prepend items while preserving existing array values
Bash Scripts: Construct a new array with the new values before the quoted original expansion.
Bash Scripts✓ Tested
Preserve equal-key order while sorting records
C++: stable_sort retains encounter order for records whose selected sort keys compare equal.
C++✓ Tested
Preserve map insertion order
Java: Use LinkedHashMap when iteration should follow the order keys were first added.
Java✓ Tested
Provide a default environment value
Set a runtime default that can be overridden at startup.
Dockerfile✓ Tested
Read a stream again from its beginning
C: rewind returns a seekable stream to offset zero and clears its error and EOF indicators.
C✓ Tested