🔍 grep 常用命令速查指南¶

grep 是 Linux 中最常用的文本搜索工具，用于在文件或标准输出中快速定位匹配内容，特别适合日志分析、数据排查、JSONL 文件检索。

1. 基本用法¶

grep "ERROR" app.log

grep -n "ERROR" app.log

grep -rn "ERROR" .

grep -rin "error" .

grep -rl "ERROR" .

grep -rv "DEBUG" app.log

grep -o "ERROR" app.log

grep -c "ERROR" app.log

grep -C 3 "ERROR" app.log

grep -rn "id123" . | grep "持仓盘中盯盘监控"

grep -rn "id123" . | grep "持仓盘中盯盘监控" > /tmp/result.txt

grep '"task"' *.jsonl

grep "e05106a3-6372-4b9f-98c6-dc66f677b6c4" *.jsonl

grep "持仓盘中盯盘监控(实时)" *.jsonl

grep -rn "id123" . | grep "持仓盘中盯盘监控"

LC_ALL=C grep -rn "keyword" .

👉 提升 grep 速度（关闭本地化影响）

grep -rn "keyword" . 2>/dev/null

grep -rn --include="*.jsonl" "keyword" .

grep "ERROR" app.log | sort | uniq

grep "ERROR" app.log | sort | uniq -c | sort -nr | head

grep -rn "ERROR" . | less

grep -rn --include="*.jsonl" "keyword" . > /tmp/out.txt
less /tmp/out.txt

grep -rn "uuid" . | grep "业务关键词"

grep = 日志世界的“搜索引擎”，less = “浏览器”，vim = “编辑器”

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