LINES (int)

Character height of terminal

Description

LINES returns the cell height of the terminal.

This is a reserved variable so it cannot be changed.

Detail

The Murex controlling terminal is assumed to be the terminal. If Stdout cannot be successfully queried for its dimensions, for example Murex is a piped rather than controlling a TTY, then $LINES will generate an error:

» exec $MUREX_EXE -c 'out $LINES' -> cat
Error in `out` ( 1,1):
      Command: out $LINES
      Error: cannot assign value to $LINES: inappropriate ioctl for device
          > Expression: out $LINES
          >           :          ^
          > Character : 9
Error in `/Users/laurencemorgan/dev/go/src/github.com/lmorg/murex/murex` (0,1): exit status 1

This error can be caught via ||, try et al.

See Also


This document was generated from gen/variables/LINES_doc.yaml.

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Last built on Mon Oct 12 23:53:07 UTC 2026 against commit 6332fa16332fa1e89d3a5df5c6104d7f19d017367bb74f9.

Current version is 7.3.1232 (unknown) which has been verified against tests cases.