Results for “File operations & paths”
Small, practical examples. Search by task or narrow things down below.
Choose a local file through a labeled control
HTML: A file input exposes selected file metadata to the page without providing arbitrary filesystem access.
HTML✓ Tested
Classify a filename with shell patterns
Bash Scripts: Case patterns support alternatives without launching an external regex tool.
Bash Scripts✓ Tested
Compress a file and keep the original
Create a gzip-compressed copy of a file while leaving the uncompressed original in place.
gzip✓ Tested
Compress a stream to a chosen filename
Linux Commands: Use gzip -c to leave the source file untouched and choose the destination explicitly.
Linux Commands✓ Tested
Confirm the root filesystem rejects writes
Docker / Compose: A read-only root prevents creating files outside writable mounts.
Docker / Compose✓ 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