利用管道与六个常用组合命令wc head cut grep sort和uniq
相对比较基础，现在基本都已经用三剑客来代替这几个了，我就只举几个比较进阶的例子了
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wc Linux-Firewall.md
126 386 4603 Linux-Firewall.md
wc -l Linux-Firewall.md
126 Linux-Firewall.md
wc -w Linux-Firewall.md
386 Linux-Firewall.md
wc -c Linux-Firewall.md
4603 Linux-Firewall.md
ls /bin | head -5
1panel
1pctl
[
addr2line
alias
grep -r zhz
Python.md:user3 = {'name': 'zhz','age':'25','salary':'5000','address':'hz'}
Python.md:user3 = {'name': 'zhz','age':'25','salary':6000,'address':'hz'}
Python.md:person3 = ('zhz',25,'male')
Python.md:
Shell.md:172.16.2.135:two:three:four:five:zhz
Shell.md:cat /root/test | grep zhz | cut -d ":" -f 2,6
-v -c -w -i等多个参数就不说了
ls -l /usr/lib | awk -F 'r' '{print $1}' | grep -c d
ls -l /usr/lib | cut -c1 | grep d | wc -l
awk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -n -r | head -5
209 122.191.17.14
33 89.248.163.214
20 162.158.162.193
12 89.248.171.23
11 138.197.141.26
在上面这条命令中，首先awk筛出所有的ip,sort排序,uniq合并-c统计,sort按数字降序排序,head列出前五个
cut -f1 grades | sort | uniq -c | sort -nr
4 B
3 A
2 C
1 F
1 D
md5sum Linux-Firewall.md
d51d4ecbda9869d7f79ed097616b85be Linux-Firewall.md
md5sum *.jpg ——列出所有jpg的md5
md5sum *.jpg | cut -c1-32 | sort ——截取前32个字符并排序
md5sum *.jpg | cut -c1-32 | sort | uniq -c ——统计重复数据
md5sum *.jpg | cut -c1-32 | sort | uniq -c | sort -nr ——统计重复的数量
md5sum *.jpg | cut -c1-32 | sort | uniq -c | sort -nr | grep -v " 1"
——去除数量为1的图片，剩下的就都是存在重复的图片
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