Use the following tools to compare, copy, and examine files:
Concatenates and displays files.
Changes file flags.
Changes access modes on files.
Compares two files, byte-by-byte.
Compares two sorted files.
Compares two files, line-by-line.
Compares three files.
Determines a file's type.
Shows the first few lines of a file.
Serves as an enhanced alternative to more.
Creates symbolic or hard links.
Symbolic and hard links are not the same as Carbon aliases that you create in the Finder (File Make Alias, or -L). Unix programs cannot follow Carbon aliases, but all Mac OS X applications (Carbon, Cocoa, Classic, and Unix) can follow symbolic or hard links.
Lists files or directories.
Makes a new directory.
Displays files one screen at a time.
Moves or renames files or directories.
Merges a set of changes into a file.
Prints the working directory.
Insecurely copies a file to or from a remote machine. Use scp instead.
Secures alternative to rcp.
Compares two files, side-by-side and line-by-line.
Splits files evenly.
Shows the last few lines of a file.
Displays nonprinting characters in a readable form.