Results for “File operations & archives”
Small, practical examples. Search by task or narrow things down below.
Copy a file and inspect the copied byte count
Copy a file and inspect the copied byte count in a complete Rust program using the standard library.
Rust✓ Tested
Copy a file in bounded binary chunks
C: Check read, write, and close errors while copying without loading the entire file.
C✓ Tested
Copy a file into a created container
Docker / Compose: docker cp can copy into a container before its process starts.
Docker / Compose✓ Tested
Copy a file into an image
Include a small application file during the build.
Dockerfile✓ Tested
Copy a file to a folder
Create a backup folder if needed, then copy a file into it while preserving its modification time and permission bits.
file✓ Tested
Copy a file with explicit permissions
Linux Commands: Use install to create parent directories and set the destination mode in one operation.
Linux Commands✓ Tested
Count bytes in a file
Linux Commands: Use wc -c for byte length rather than Unicode character count.
Linux Commands✓ Tested
Count lines in a file
Count newline characters in a text file, printing only the count without the filename.
lines✓ Tested
Create a file without replacing existing data
Create a file without replacing existing data in a complete Rust program using the standard library.
Rust✓ Tested
Create a runtime file during the build
Docker / Compose: RUN executes during the build while CMD executes when a container starts.
Docker / Compose✓ Tested
Create a second name for the same file
Linux Commands: Use ln for a hard link and inspect the shared link count.
Linux Commands✓ Tested
Create a small file at build time
Docker / Compose: Create a small file at build time with a complete introductory Dockerfile.
Docker / Compose✓ Tested