Fix these kinds of warnings:
SC2002: Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
SC2086: Double quote to prevent globbing and word splitting.
SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Examples:
In training/tesstrain.sh line 64:
if (( ${LINEDATA} )); then
^-- SC2004: $/${} is unnecessary on arithmetic variables.
In training/tesstrain.sh line 56:
source `dirname $0`/language-specific.sh
^-- SC2006: Use $(..) instead of legacy `..`.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
