grep命令笔记

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grep "要查找的单词" 要查找的文档

grep命令笔记

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grep -i "要查找的单词" 要查找的文档
# -i 是不区分大小=ignore

grep命令笔记

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grep -n "要查找的单词" 要查找的文档
# -n 显示行数=number

grep命令笔记

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grep -w "要查找的单词" 要查找的文档
# -w 匹配一个单独的单词=word

grep命令笔记

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grep -v "要排除的单词" 要查找的文档
# -v 排除这个单词=versa

grep命令笔记

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grep -e "查找单词1" -e "查找单词2" 要查找的文档
# -e 要么单词1要么单词2=either

grep命令笔记

用ls -l | grep "关键字"可以查找文件夹中含有某些字符的文件

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root@DESKTOP-FH09R9R:/etc# ls -l | grep "rc"
-rw-r--r-- 1 root root    2319 Jan  7  2022 bash.bashrc
-rw-r--r-- 1 root root    1748 Jan  7  2022 inputrc
-rw-r--r-- 1 root root     288 Mar 18  2022 mecabrc
-rw-r--r-- 1 root root   11204 Feb  9  2022 nanorc
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc0.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc1.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc2.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc3.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc4.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc5.d
drwxr-xr-x 1 root root    4096 Mar 22 08:37 rc6.d
drwxr-xr-x 1 root root    4096 May  2  2023 rcS.d
-rw-r--r-- 1 root root    3663 Jun 20  2016 screenrc
-rw-r--r-- 1 root root    4942 Jan 24  2022 wgetrc
root@DESKTOP-FH09R9R:/etc# ls -l | grep "my"
drwxr-xr-x 1 root root    4096 Mar 22 08:36 mysql

用apt list --installed | grep "关键字"可以查找到安装了的软件里面含有该关键字的有哪些

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root@DESKTOP-FH09R9R:/etc# apt list --installed | grep "mysql"

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

mysql-client-8.0/jammy-updates,jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-client-core-8.0/jammy-updates,jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-common/jammy,now 5.8+1.0.8 all [installed,automatic]
mysql-server-8.0/jammy-updates,jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-server-core-8.0/jammy-updates,jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-server/jammy-updates,jammy-security,now 8.0.36-0ubuntu0.22.04.1 all [installed]

快速列出含有mysql关键字的包版本
sudo apt list --all-versions | grep "mysql" | grep "8.0"这样可以同时搜索两个关键字and与逻辑
sudo apt list --all-versions | grep -e "mysql" -e "8.0"
这样可以同时搜索两个关键字or或逻辑
sudo apt list --all-versions | grep -v "lib" | grep "mysql"这样可以排除一些不需要的关键字后再搜索，是非的逻辑

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# brian @ DESKTOP-FH09R9R in ~ [8:43:07]
$ sudo apt list --all-versions | grep "mysql"
[sudo] password for brian:

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

mysql-client-8.0/jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-client-core-8.0/jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-client/jammy-security 8.0.36-0ubuntu0.22.04.1 all
mysql-common/now 5.8+1.0.8 all [installed,local]
mysql-router/jammy-security 8.0.36-0ubuntu0.22.04.1 amd64
mysql-server-8.0/jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-server-core-8.0/jammy-security,now 8.0.36-0ubuntu0.22.04.1 amd64 [installed,automatic]
mysql-server/jammy-security,now 8.0.36-0ubuntu0.22.04.1 all [installed]
mysql-source-8.0/jammy-security 8.0.36-0ubuntu0.22.04.1 amd64
mysql-testsuite-8.0/jammy-security 8.0.36-0ubuntu0.22.04.1 amd64
mysql-testsuite/jammy-security 8.0.36-0ubuntu0.22.04.1 all