From The x3270 Wiki

c3270 is an interactive 3270 emulator that runs on a character-mode terminal on a POSIX system. A character-mode terminal can be an emulator such as xterm, gnome-terminal, kterm, or a macOS Terminal window. It can also run on a Linux console, or on a real physical terminal such as a DEC VT100.

c3270 session display

How do I configure and run it?

c3270 uses resource definitions for its configuration, which can be set in a number of different ways:

  • Specifying a session file (a file with resource definitions in xrdb format) on the c3270 command line. A c3270 session file has the suffix .c3270.
  • Specifying individual command-line options when you invoke c3270. These override definitions from a session file.

c3270 also allows a number of options to be changed from menus, key combinations and at the c3270> prompt, but these changes are not saved -- you need to use one of the above methods to make changes to a new session.

Window resizing

If c3270 is running inside of a terminal emulator window rather than on a real hardware terminal, the emulator window should not be resized or maximized. If you do this, the display may become distorted until you return the window to its correct dimensions.

See also

Release Notes