Results for “command”
Small, practical examples. Search by task or narrow things down below.
Set the open-file limit for a process
Docker / Compose: The nofile ulimit sets soft and hard file descriptor limits.
Docker / Compose✓ Tested
Share data through a named volume
Keep a file across two short-lived containers.
volume✓ Tested
Show the current directory
Print the absolute path of your current working directory before running commands that depend on relative paths.
directory✓ Tested
Show the first lines of a file
Read only the first three lines of a text file, useful for checking a header or previewing a large log.
head✓ Tested
Show the Linux distribution version
Read the distribution-provided operating system name and version from os-release.
os✓ Tested
Sort and deduplicate lines
Sort lines alphabetically and remove duplicate lines in a predictable C locale.
sort✓ Tested
Split a line into named fields
Read a simple delimiter-separated line into variables.
read✓ Tested
Start an existing container and attach to its output
Docker / Compose: create records the command; start with attach runs that existing container.
Docker / Compose✓ Tested
Stop a running container gracefully
Docker / Compose: stop sends the configured stop signal and waits before forcing termination.
Docker / Compose✓ Tested
Supply a default for an unset Compose variable
Docker / Compose: The default interpolation form supplies a value when the variable is absent or empty.
Docker / Compose✓ Tested
Supply a non-secret configuration file
Docker / Compose: A Compose config mounts a declared file into the service.
Docker / Compose✓ Tested
Supply an environment variable to an exec process
Docker / Compose: An exec environment override applies to the new process only.
Docker / Compose✓ Tested