If no files are specified, captoinfo interprets the content of the environment variable TERMCAP as a file name, and extracts only the entry for the terminal named in the environment variable TERM from it. If the environment variable TERMCAP is not set, captoinfo reads /etc/termcap.
This utility is implemented as a link to tic(1), with the latter's -I option implied. You can use other tic options such as -1, -f, -v, -w, and -x. The -V option reports the version of ncurses associated with this program and exits with a successful status.
| termcap Code | |||
| Obsolete | Standard | Origin | terminfo capability |
| BO | mr | AT&T | enter_reverse_mode |
| CI | vi | AT&T | cursor_invisible |
| CV | ve | AT&T | cursor_normal |
| DS | mh | AT&T | enter_dim_mode |
| EE | me | AT&T | exit_attribute_mode |
| FE | LF | AT&T | label_on |
| FL | LO | AT&T | label_off |
| XS | mk | AT&T | enter_secure_mode |
| EN | @7 | XENIX | key_end |
| GE | ae | XENIX | exit_alt_charset_mode |
| GS | as | XENIX | enter_alt_charset_mode |
| HM | kh | XENIX | key_home |
| LD | kL | XENIX | key_dl |
| PD | kN | XENIX | key_npage |
| PN | po | XENIX | prtr_off |
| PS | pf | XENIX | prtr_on |
| PU | kP | XENIX | key_ppage |
| RT | @8 | XENIX | kent |
| UP | ku | XENIX | kcuu1 |
| KA | k; | Tektronix | key_f10 |
| KB | F1 | Tektronix | key_f11 |
| KC | F2 | Tektronix | key_f12 |
| KD | F3 | Tektronix | key_f13 |
| KE | F4 | Tektronix | key_f14 |
| KF | F5 | Tektronix | key_f15 |
| BC | Sb | Tektronix | set_background |
| FC | Sf | Tektronix | set_foreground |
| HS | mh | IRIX | enter_dim_mode |
XENIX termcap had a set of extension capabilities, corresponding to box drawing characters of CCSID ("code page") 437, as follows.
| termcap Code | Graphic |
| G2 | upper left corner |
| G3 | lower left corner |
| G1 | upper right corner |
| G4 | lower right corner |
| GR | tee pointing right |
| GL | tee pointing left |
| GU | tee pointing up |
| GD | tee pointing down |
| GH | horizontal line |
| GV | vertical line |
| GC | intersection |
| G6 | double upper left corner |
| G7 | double lower left corner |
| G5 | double upper right corner |
| G8 | double lower right corner |
| Gr | double tee pointing right |
| Gr | double tee pointing left |
| Gu | double tee pointing up |
| Gd | double tee pointing down |
| Gh | double horizontal line |
| Gv | double vertical line |
| Gc | double intersection |
| GG | ACS magic cookie count |
captoinfo composes single-line capabilities into an acsc string, and discards GG and double-line capabilities with a warning diagnostic.
IBM's AIX has a terminfo facility descended from SVr1 terminfo, but which is incompatible with the SVr4 format. captoinfo translates the following AIX extensions.
| IBM | X/Open |
| ksel | kslt |
| kbtab | kcbt |
| font0 | s0ds |
| font1 | s1ds |
| font2 | s2ds |
| font3 | s3ds |
Additionally, this program translates the AIX box1 capability to an acsc string.
The HP-UX terminfo library supports two nonstandard terminfo capabilities, meml (memory lock) and memu (memory unlock). captoinfo discards these with a warning message.
SVr4 systems provide captoinfo as a separate application from tic. Its -v option does not accept a trace level argument n; repeat -v n times instead.
NetBSD does not provide this application.