Some explanation to some errors and warnings

A csh error saying that a command is over 1024 charaters long (1024 being the default, as of this writing at least).

Which is usually caused by a long value.

And often specifically by a line like:

setenv PATH ${PATH}:otherstuff

...often specifically PATH or LD_LIBRARY_PATH as they are most easily already 1000ish characters long.

You can check that with something like

echo $PATH | wc -c
echo $LD_LIBRARY_PATH | wc -c

In general, you have a few options:

• switch to a shell that doesn't have this problem
• recompile csh with a larger BUFSIZE
• figure out the specific cause
  • typically: clean the path of long or unnecessary or duplicate entries