贴一段脚本: 

# process/threads/matrix
MODE=process
# MODE=threads
# MODE=matrix

#true/false
#VIEW=true
VIEW=false

# <= 4
CHANNELS=2

if [ $MODE == "process" -a $CHANNELS -gt 1 ]; then
echo $CHANNELS
else
./gh_test $MODE $VIEW $CHANNELS
fi

  上图中,包含了:


  • 字串比较
  • 数字比较
  • 两个条件 (-a/-o)