老男孩教育-运维发展流程
https://www.processon.com/view/link/5cbd14a3e4b0bab90961b292
技术大牛的运维之路
首先创建环境
用grep取出含有oldoboy的行
[root@oldboyedu59 /oldboy]# grep ‘oldb.y’ oldboy.txt
I am oldboy teacher!
my blog is http://oldboy.blog.51cto.com
our size is http://blog.oldboyedu.com
my god,i am not oldbey,but OLDBOY!
oldboy oldboy oldboy
用sed取出含有oldoboy的行
[root@oldboyedu59 /oldboy]# sed -n ‘/oldb.y/p’ oldboy.txt
I am oldboy teacher!
my blog is http://oldboy.blog.51cto.com
our size is http://blog.oldboyedu.com
my god,i am not oldbey,but OLDBOY!
oldboy oldboy oldboy
用awk取出含有oldoboy的行
[root@oldboyedu59 /oldboy]# awk ‘/oldb.y/’ oldboy.txt
I am oldboy teacher!
my blog is http://oldboy.blog.51cto.com
our size is http://blog.oldboyedu.com
my god,i am not oldbey,but OLDBOY!
oldboy oldboy oldboy
创建环境mkdir -p /server/files/
cat >>/server/files/reg.txt<<EOF
Zhang Dandan 41117397 :250:100:175
Zhang Xiaoyu 390320151 :155:90:201
Meng Feixue 80042789 :250:60:50
Wu Waiwai 70271111 :250:80:75
Liu Bingbing 41117483 :250: 100:175.
Wang Xiaoai 3515064655 :50:95:135
Zi Gege 1986787350 :250:168:200
Li Youjiu 918391635 :175:75:300
Lao Nanhai 918391635 :250:100:175
EOF
[root@oldboyedu59 /oldboy]# cat /server/files/reg.txt
Zhang Dandan 41117397 :250:100:175
Zhang Xiaoyu 390320151 :155:90:201
Meng Feixue 80042789 :250:60:50
Wu Waiwai 70271111 :250:80:75
Liu Bingbing 41117483 :250: 100:175
Wang Xiaoai 3515064655 :50:95:135
Zi Gege 1986787350 :250:168:200
Li Youjiu 918391635 :175:75:300
Lao Nanhai 918391635 :250: 100:175
[root@oldboyedu59 /oldboy]# awk ‘
/’ /server/files/reg.txt 取第二列以i结尾的行
Wu Waiwai 70271111 :250:80:75
Wang Xiaoai 3515064655 :50:95:135
Lao Nanhai 918391635 :250:100:175
[root@oldboyedu59 /oldboy]# awk ‘
/{print $1,$2,$3}’ /server/files/reg.txt
Wu Waiwai 70271111
Wang Xiaoai 3515064655
Lao Nanhai 918391635 取第二列以i结尾的行的第1 2 3列
m 第一列是姓氏
m 第二列是名字
m 第一第二列合起来就是姓名
m 第三列是对应的ID号码
m 最后三列是三次捐款数量
姓氏是Zhang的人,显示他的第二次捐款金额及她的名字
显示所有ID号码最后一位数字是1或5的人的全名
显示所有人的全名,以姓,名的格式显示,如Meng,Feixue
显示Xiaoyu的捐款.每个值时都有以$开头.如$520$200$135
[root@oldboyedu59 /oldboy]# #显示Xiaoyu的姓氏和ID号码
[root@oldboyedu59 /oldboy]# #条件:显示Xiaoyu
[root@oldboyedu59 /oldboy]# #{动作}: 显示姓氏和id
[root@oldboyedu59 /oldboy]# awk ‘$2~/Xiaoyu/’ /server/files/reg.txt
Zhang Xiaoyu 390320151 :155:90:201
[root@oldboyedu59 /oldboy]#
[root@oldboyedu59 /oldboy]# awk ‘$2~/Xiaoyu/{print $1,$3}’ /server/files/reg.txt
Zhang 390320151
姓氏是Zhang的人,显示他的第二次捐款金额及她的名字
显示所有ID号码最后一位数字是1或5的人的全名
显示所有人的全名,以姓,名的格式显示,如Meng,Feixue
显示Xiaoyu的捐款.每个值时都有以$开头.如$520$200$135
注意点
‘$1~/^Zhang/’ 第1列中以Zhang开头的
‘/^Zhang/’ 这一行中以Zhang开头
$NF 倒数第一列(最后一列)
姓氏是Zhang的人,显示他的第二次捐款金额及她的名字
显示所有ID号码最后一位数字是1或5的人的全名
方法一 awk ‘
|5$/{print $1,$2}’ /server/files/reg.txt
方法二 awk ‘
]/{print $1,$2}’ /server/files/reg.txt
[root@oldboyedu59 /oldboy]# awk ‘
/’ /server/files/reg.txt
Zhang Xiaoyu 390320151 :155:90:201
Wu Waiwai 70271111 :250:80:75
Wang Xiaoai 3515064655 :50:95:135
Li Youjiu 918391635 :175:75:300
Lao Nanhai 918391635 :250:100:175
[root@oldboyedu59 /oldboy]# awk ‘
/{print $1,$2}’ /server/files/reg.txt
Zhang Xiaoyu
Wu Waiwai
Wang Xiaoai
Li Youjiu
Lao Nanhai
显示所有人的全名,以姓,名的格式显示,如Meng,Feixue
[root@oldboyedu59 /oldboy]# awk ‘{print $1","$2}’ /server/files/reg.txt
Zhang,Dandan
Zhang,Xiaoyu
Meng,Feixue
Wu,Waiwai
Liu,Bingbing
Wang,Xiaoai
Zi,Gege
Li,Youjiu
Lao,Nanhai
显示Xiaoyu的捐款.每个值时都有以$开头.如$520$200$135
sed ‘s#:#$#g’ red.txt
s==sub
gsub( / : /,”$”) $0 当前行记录
grub (/找谁/,”替换成什么”)
grub (/找谁/,”替换成什么”,某一列)
[root@oldboyedu59 /oldboy]# awk ‘{gsub(/ : /,"KaTeX parse error: Expected 'EOF', got '}' at position 3: ")}̲' /server/files…");print $0 }’ /server/files/reg.txt
Zhang Dandan 41117397 $250$100$175
Zhang Xiaoyu 390320151 $155$90$201
Meng Feixue 80042789 $250$60$50
Wu Waiwai 70271111 $250$80$75
Liu Bingbing 41117483 $250$100$175
Wang Xiaoai 3515064655 $50$95$135
Zi Gege 1986787350 $250$168$200
Li Youjiu 918391635 $175$75$300
Lao Nanhai 918391635 $250$100$175
[root@oldboyedu59 /oldboy]# awk ‘{gsub(/:/,"
NF); print $4 }’ /server/files/reg.txt
$250$100$175
$155$90$201
$250$60$50
$250$80$75
$250$100$175
$50$95$135
$250$168$200
$175$75$300
$250$100$175
创建环境:
head /etc/passwd >/oldboy/passwd.txt
调换/oldboy/passwd.txt文件的第1列和最后一列的位置(不用修改文件内容)
sed
sed -r ‘s#(^.)(:x.)(.*$)#\3\2\1#g’ /oldboy/passwd.txt
awk
方法1
方法2
awk -F: ‘{tmp=$1;
NF;$NF=tmp;print $0 }’ passwd.txt
方法二
awk-调换 /etc/passwd第1列和最后一列的内容-说明
https://www.processon.com/view/link/5aa1df8ae4b0b089b9e60cbd
[root@oldboyedu59 /oldboy]# awk -F: -vOFS=":" ‘{tmp=$1;
NF;$NF=tmp;print $0 }’ passwd.txt
/bin/bash: x:0:0:root:/root:root
/sbin/nologin : x: 1:1:bin: /bin:bin
/sbin/nologin: x: 2:2:daemon: /sbin:daemon
/sbin/nologin: x: 3:4:adm: /var/adm:adm
/sbin/nologin: x: 4:7:lp: /var/spool/lpd:lp
/bin/sync: x: 5:0:sync: /sbin:sync
/sbin/shutdown: x:6:0:shutdown: /sbin:shutdown
/sbin/halt: x:7:0: halt: /sbin:halt
/sbin/nologin: x:8:12:mail: /var/spool/mail:mail
/sbin/nologinx:11:0:operator: /root:operator
-v 修改或创建awk内置变量
awk -F: ‘{print $1,$2 }’ passwd.txt
awk -vFS=":" ‘{print $1,$2 }’ passwd.txt
-F处理的是awk怎么读取
OFS处理的是awk怎么显示。
-vOFS