"여러 파일 grep 하기 + 파일명 보기"의 두 판 사이의 차이

2015년 2월 6일 (금) 04:44 판

1 개요

여러 파일 grep 하기
grep 파일 여러 개 보기
grep 파일명 보기

H: 파일명 출력(with filename)
n: 줄번호 출력(line number)
i: 대소문자 구분 안함(ignore case)

2 방법 1: grep

[root@jmnote ~]# grep -Hni Error /var/log/messages*
/var/log/messages:1104:Sep 15 16:20:48 localhost NetworkManager[1817]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:2248:Sep 27 08:19:16 localhost NetworkManager[1862]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:3420:Sep 28 11:26:54 localhost NetworkManager[1747]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages-20130706:1079:Jul  6 19:53:07 localhost NetworkManager[1813]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
... (생략)

3 방법 2: xargs + grep

[root@jmnote ~]# ls -al /var/log/messages* | awk '{print $NF}' | xargs grep -Hni Error 
/var/log/messages:1104:Sep 15 16:20:48 localhost NetworkManager[1817]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:2248:Sep 27 08:19:16 localhost NetworkManager[1862]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:3420:Sep 28 11:26:54 localhost NetworkManager[1747]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages-20130706:1079:Jul  6 19:53:07 localhost NetworkManager[1813]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
... (생략)

4 방법 3: find + grep

/var/log의 messages* 파일들에 대해 Error라는 문자열로 grep한 결과

[root@jmnote ~]# find /var/log -maxdepth 1 -type f -name 'messages*' -exec grep -Hni Error {} \;
/var/log/messages-20130706:1079:Jul  6 19:53:07 localhost NetworkManager[1813]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:1104:Sep 15 16:20:48 localhost NetworkManager[1817]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:2248:Sep 27 08:19:16 localhost NetworkManager[1862]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
/var/log/messages:3420:Sep 28 11:26:54 localhost NetworkManager[1747]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
... (생략)

→ 어느 파일의 몇번째 행에서 발견되었는지가 출력된다.

5 같이 보기

6 참고 자료

http://stackoverflow.com/questions/5914370/list-file-names-based-on-a-filename-pattern-and-file-content-grep

@@ 8번째 줄: / 8번째 줄: @@
 ==방법 1: grep ==
-<source lang='dos'>
+<source lang='cli'>
 [root@jmnote ~]# grep -Hni Error /var/log/messages*
 /var/log/messages:1104:Sep 15 16:20:48 localhost NetworkManager[1817]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
@@ 18번째 줄: / 18번째 줄: @@
 == 방법 2: xargs + grep ==
-<source lang='dos'>
+<source lang='cli'>
 [root@jmnote ~]# ls -al /var/log/messages* | awk '{print $NF}' | xargs grep -Hni Error
 /var/log/messages:1104:Sep 15 16:20:48 localhost NetworkManager[1817]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
@@ 29번째 줄: / 29번째 줄: @@
 == 방법 3: find + grep ==
 /var/log의 messages* 파일들에 대해 Error라는 문자열로 grep한 결과
-<source lang='dos'>
+<source lang='cli'>
 [root@jmnote ~]# find /var/log -maxdepth 1 -type f -name 'messages*' -exec grep -Hni Error {} \;
 /var/log/messages-20130706:1079:Jul  6 19:53:07 localhost NetworkManager[1813]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files