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Linux必备技能!30个常用命令行操作全解析

  • 2026-06-28 05:19:19
Linux必备技能!30个常用命令行操作全解析

前面给大家带来了Linux在生物信息学中的重要性,为什么学Linux,怎么去学习等内容。今天的内容主要介绍了在生物信息学分析中常用的30个Linux命令行操作,这些命令是进行生信分析的基础,基本上是单词的简写。希望这些内容能帮助大家更好地掌握Linux系统,提高生物信息学分析的效率和水平。

基础命令

1、ls:列出目录内容

ls
ls -l
ls -a

2、cd:切换目录

cd /path/to/directory
cd ..

3、pwd:显示当前工作目录

pwd

4、mkdir:创建新目录

mkdir new_directory

5、touch:创建新文件

touch new_file.txt

6、cp:复制文件或目录

cp file1.txt file2.txt
cp -r directory1 directory2

7、mv:移动文件或目录

mv file1.txt /path/to/directory
mv old_name.txt new_name.txt

8、rm:删除文件或目录

rm file.txt
rm -r directory

9、cat:查看文件内容

cat file.txt

10、more/less:分页查看文件内容

more file.txt
less file.txt

11、head/tail:查看文件开头/结尾内容

head file.txt
tail file.txt

文件操作

12、find:查找文件

find /path/to/search -name "filename"

13、grep:在文件中搜索指定文本

grep "search_text" file.txt

14、wc:统计文件的行数、字数和字符数

wc file.txt

15、diff:比较文件差异

diff file1.txt file2.txt

16、tar:打包和解压文件

tar -cvf archive.tar file1 file2
tar -xvf archive.tar

系统管理

17、ps:显示进程状态

ps
ps aux

18、top:实时显示系统资源占用情况

top

19、kill:终止进程

kill PID

20、df:显示磁盘空间利用情况

df -h

21、du:查看目录大小

du -h /path/to/directory

22、free:查看内存使用情况

free -h

网络相关

23、ping:测试主机之间的连通性

ping www.example.com

24、ifconfig/ip:查看网络接口信息

ifconfig
ip addr show

25、ss:查看网络连接状态

ss -tuln

26、nc:网络工具

nc -vz host port

27、curl/wget:下载文件

curl -O http://www.example.com/file.txt
wget http://www.example.com/file.txt

权限管理

28、chmod:修改文件权限

chmod 755 file.txt

29、chown:修改文件所有者

chown user:group file.txt

30、sudo:以超级用户权限执行命令

sudo command

其他常用命令

30、history:查看历史命令记录

history

31、alias:设置命令别名

#可以通过给命令起一个简短的别名来快速执行该命令。比如:
alias ll='ls -l'#这样以后输入ll就相当于输入了ls -l。

32、date:显示系统的日期和时间信息

#一般格式为年-月-日 时:分:秒。
#可以用来查看当前系统的时间设置。
date

33、uptime:显示系统的运行时间以及平均负载信息

#通过该命令可以查看系统已经运行的时间长短,以及系统在过去1分钟、5分钟、15分钟内的平均负载情况。
uptime

以上是我们常用命令的简介和示例,需要具体命令的选项参数还需要去输入 命令 --help或者-h来查看具体的帮助文档,关于该命令的详细示例和信息。

下期内容:转录组上游分析

此文是在自己的理解和参考网络资料后完成的,若有侵权,请联系删除。

END

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  1. CONNECT:[ UseTime:0.000604s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000899s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.035082s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.023208s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000822s ]
  6. SELECT * FROM `set` [ RunTime:0.042778s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000708s ]
  8. SELECT * FROM `article` WHERE `id` = 500585 LIMIT 1 [ RunTime:0.017727s ]
  9. UPDATE `article` SET `lasttime` = 1783021757 WHERE `id` = 500585 [ RunTime:0.015660s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.007133s ]
  11. SELECT * FROM `article` WHERE `id` < 500585 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.005280s ]
  12. SELECT * FROM `article` WHERE `id` > 500585 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000489s ]
  13. SELECT * FROM `article` WHERE `id` < 500585 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008212s ]
  14. SELECT * FROM `article` WHERE `id` < 500585 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006551s ]
  15. SELECT * FROM `article` WHERE `id` < 500585 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.154818s ]
0.390661s