Previous: Command line input, Up: Command line [Contents][Index]
If LaTeX finds an error in your document then it gives you an error
message and prompts you with a question mark, ?. For instance,
running LaTeX on this file
\newcommand{\NP}{\ensuremath{\textbf{NP}}}
The \PN{} problem is a million dollar one.
causes it show this, and wait for input.
! Undefined control sequence.
l.5 The \PN
{} problem is a million dollar one.
?
The simplest thing is to enter ‘x’ and <return> and fix the
typo. You could instead enter ‘?’ and <return> to see other
options.
There are two other error scenarios. The first is that you forgot to
include the \end{document} or misspelled it. In this case
LaTeX gives you a ‘*’ prompt. You can get back to the command
line by typing \stop and <return>.
The last scenario is that you mistyped the file name. For instance,
instead of pdflatex test you might type pdflatex tste.
! I can't find file `tste'.
<*> tste
(Press Enter to retry, or Control-D to exit)
Please type another input file name:
The simplest thing is to enter <Control> and ‘d’ (holding
them down at the same time), and then retype the correct command line.