随笔分类 -  shell

grep cut 每行100字符
摘要：cat bbb.log |grep -E "engine:ws received|engine:ws writing" |cut -c1-100 阅读全文
posted @ 2022-06-09 13:51 aaron_agu 阅读(161) 评论(0) 推荐(0) 编辑
shell echo 输出到标准错误
摘要：echo "hello world" >&2 # > 和 &之间如果有空格会语法错误 阅读全文
posted @ 2022-02-16 15:41 aaron_agu 阅读(407) 评论(1) 推荐(0) 编辑

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