ruby-on-rails - 如何在 Multitail 中为 Rails 日志着色？

Question

tail logs/development.logXFCE终端中的输出：

multitail log/development.log

Rails 自动将转义码添加到日志文件中。见development.log文件：

  ^[[1m^[[36m (84.1ms)^[[0m  ^[[1mCREATE TABLE "schema_migrations" ("version" varchar(255) NOT NULL) ^[[0m
  ^[[1m^[[35m (92.6ms)^[[0m  CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version")
  ^[[1m^[[36m (0.2ms)^[[0m  ^[[1mSELECT version FROM "schema_migrations"^[[0m
  ^[[1m^[[35m (159.3ms)^[[0m  INSERT INTO "schema_migrations" (version) VALUES ('20130327221553')
  ^[[1m^[[36m (59.9ms)^[[0m  ^[[1mINSERT INTO "schema_migrations" (version) VALUES ('20130326152730')^[[0m
  ^[[1m^[[35m (59.8ms)^[[0m  INSERT INTO "schema_migrations" (version) VALUES ('20130327173637')

multitail -c产生不可用的输出。

如何在不编写自己的配色方案的情况下为 Multitail 中的日志着色？

Answer 1

这完全是关于解释ANSI 转义序列，它本身不是终端tail，也必须这样做multitail。可以通过以下-cT ANSI选项完成：

-cT term    interpret terminal-codes from file/command (for terminal type 'term')

例子：

$ multitail -cT ansi log/development.log
multiple files:
$ multitail -cT ansi log/development.log -cT ANSI log/test.log