Github Enterprise Server附带了一个实用程序：
ghe-logs-tail
这会同时跟踪所有GHE服务器日志，并将流打印到控制台供用户查看。
当试图通过这些途径时，例如；错误"；字符串：
ghe-logs-tail | grep --line-buffered -i "error"
控制台不会打印流，而是包含一个错误，即某些日志文件由于某种原因无法打开。
$ ghe-logs-tail | grep --line-buffered -i "error"
/var/log/github/audit.log /var/log/github/auth.log /var/log/github/exceptions.log /var/log/github/gitauth.log /var/log/github/personal.log /var/log/github/production.log /var/log/github/resqued.log /var/log/github/unicorn.log /var/log/enterprise-manage/login_attempts.log /var/log/enterprise-manage/unicorn.log /var/log/github/auth.log /var/log/auth.log /var/log/nginx/alambic.assets.error.log /var/log/nginx/alambic.assets.log /var/log/nginx/alambic.avatars.error.log /var/log/nginx/alambic.avatars.log /var/log/nginx/alambic.error.log /var/log/nginx/alambic.log /var/log/nginx/avatars.error.log /var/log/nginx/avatars.log /var/log/nginx/credits.error.log /var/log/nginx/credits.log /var/log/nginx/enterprise-manage.error.log /var/log/nginx/enterprise-manage.log /var/log/nginx/error.log /var/log/nginx/gist.error.log /var/log/nginx/gist.log /var/log/nginx/github.error.log /var/log/nginx/github.log /var/log/nginx/pages.error.log /var/log/nginx/pages.log /var/log/nginx/raw.error.log /var/log/nginx/raw.log /var/log/nginx/render.error.log /var/log/nginx/render.log /var/log/nginx/static-maintenance.error.log /var/log/nginx/static-maintenance.log /var/log/nginx/storage.error.log /var/log/nginx/storage.log /data/user/common/ghe-config.log /var/log/syslog /var/log/dmesg /var/log/mysql/*.log /var/log/redis/redis.log /var/log/haproxy.log
==> /var/log/nginx/alambic.assets.error.log <==
==> /var/log/nginx/alambic.avatars.error.log <==
==> /var/log/nginx/alambic.error.log <==
==> /var/log/nginx/avatars.error.log <==
==> /var/log/nginx/credits.error.log <==
==> /var/log/nginx/enterprise-manage.error.log <==
==> /var/log/nginx/error.log <==
==> /var/log/nginx/gist.error.log <==
==> /var/log/nginx/github.error.log <==
tail: cannot open '/var/log/mysql/*.log' for reading==> /var/log/nginx/pages.error.log <==
==> /var/log/nginx/raw.error.log <==
: No such file or directory==> /var/log/nginx/render.error.log <==
==> /var/log/nginx/static-maintenance.error.log <==
==> /var/log/nginx/storage.error.log <==
tail: cannot open '/var/log/redis/redis.log' for reading: No such file or directory
使用grep/awk这样的本地工具，正确的方法是什么？
很明显，我希望将包含匹配字符串的所有行实时打印到控制台。
您可以通过将grep错误路由到空设备(黑洞(来过滤它们
... | grep ... 2>/dev/null