term% cat index.txt INTRO(1) General Commands Manual INTRO(1)
NAME
intro - introduction to commands
DESCRIPTION
This section describes publicly accessible commands in alphabetic or‐
der.
The name of a particular machine at the foot of the page means that the
command is there and not necessarily elsewhere. `Local' means the
same, without being specific about where.
SEE ALSO
Section (6) for computer games.
Section (7) for databases.
Section (8) for `hidden' commands for booting, maintenance, etc.
How to get started, in the Introduction.
DIAGNOSTICS
Upon termination each command returns two bytes of status, one supplied
by the system giving the cause for termination, and (in the case of
`normal' termination) one supplied by the program, see wait and
exit(2). The former byte is 0 for normal termination, the latter is
customarily 0 for successful execution, nonzero to indicate troubles
such as erroneous parameters, bad or inaccessible data, or other in‐
ability to cope with the task at hand. It is called variously `exit
code', `exit status' or `return code', and is described only where spe‐
cial conventions are involved.
INTRO(1)