linux - 如果路径不存在尝试另一条路径

Question

我正在努力使以下工作正常进行，有人可以帮助我使用 bash。

如果以下路径“/opt/james/Mike${INSTANCE}/local/log/appserver.log”不存在，请试试这个:“/opt/james/Mike${INSTANCE}/log/appserver .log”

到目前为止我尝试了什么:

printf "waiting for the app to start..."
{ tail -n 0 -f /opt/james/Mike${INSTANCE}/local/log/appserver.log & } | sed -n '/Server startup in/q'

{
if [ ! -f "/opt/james/Mike${INSTANCE}/local/log/appserver.log" ]; then
    echo "/opt/james/Mike${INSTANCE}/log/appserver.log"
    exit 0
fi

有没有更好的写法？

Answer 1

我猜你想要这样的东西？

for p in "/opt/james/Mike${INSTANCE}/local/log" "/opt/james/Mike${INSTANCE}/log"; do
    test -f "$p/appserver.log" || continue
    log=$p/appserver.log
done
: maybe fail if "$log" is unset
: do things with "$log"