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Full Discussion: Stuck after typing goto
Top Forums UNIX for Dummies Questions & Answers Stuck after typing goto Post 302136930 by Perderabo on Thursday 20th of September 2007 01:19:04 PM
Old 09-20-2007
Wow! I have never encountered this before! Yet another reason to avoid csh. You must be using csh or tcsh as your shell. If you would switch to bash, you would not have this problem. But when csh sees an input line like "goto fubar", it will actually skip all further input lines until it encounters a line labeled "fubar". You can supply such an input line the first time. After that, another "goto fubar" sends it back to where it encountered the line labeled "fubar". Nice design...not.

Code:
$ csh
%echo $shell
/bin/tcsh
%goto fubar
goto? hello
goto? echo $shell
goto? fubar:
%date ; sleep 2
Thu Sep 20 13:06:49 EDT 2007
%
%
%
%echo we are gonna loop
we are gonna loop
%goto fubar
Thu Sep 20 13:07:16 EDT 2007
we are gonna loop
Thu Sep 20 13:07:18 EDT 2007
we are gonna loop
Thu Sep 20 13:07:20 EDT 2007
we are gonna loop
Thu Sep 20 13:07:22 EDT 2007
we are gonna loop
Thu Sep 20 13:07:24 EDT 2007
we are gonna loop
Thu Sep 20 13:07:26 EDT 2007
we are gonna loop

I'm guessing that the "fubar:" line needs to be in the history list in order to loop, but I don't feel like testing that.
 

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TGET(1) 						      General Commands Manual							   TGET(1)

NAME
tget - get termcap values SYNOPSIS
tget [-flag id] [-num id] [-str id] [-goto col line] [[-echo] string] DESCRIPTION
Tget allows shell scripts access to the termcap(3) functions. Flags, numbers and strings can be queried from the termcap database under the entry denoted by the environment variable $TERM. OPTIONS
-flag id Set the exit status to zero if the flag id is set. All other options except -echo set the exit status to id being available or not. The last option sets the final exit code. -num id Print the value of the numeric variable id. -str id Print the value of the string variable id. -goto col line Generates instructions to go to the given column and line if the cm capability exists. -echo string Prints string. Any other argument that does not start with a dash is also printed. EXAMPLE
Try this: tget -str so 'Reverse Video' -str se ENVIRONMENT
TERM Terminal type. TERMCAP Path to the termcap database, by default /etc/termcap:/usr/etc/termcap. SEE ALSO
termcap(3). DIAGNOSTICS
Tget will fail immediately with a descriptive message if the termcap entry can't be found. AUTHOR
Kees J. Bot (kjb@cs.vu.nl) TGET(1)
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