14:35:48

#cat passwd | egrep '0{2,}'

libuuid:x:100:101::/var/lib/libuuid:/bin/sh
user:x:1000:1000:user,,,:/home/user:/bin/bash
ivan:x:1001:1001::/home/ivan:/bin/bash
petr:x:1002:1002::/home/petr:/bin/bash

14:36:36

#cat passwd | egrep '[^0]0{2,}[^0]'

libuuid:x:100:101::/var/lib/libuuid:/bin/sh
user:x:1000:1000:user,,,:/home/user:/bin/bash
ivan:x:1001:1001::/home/ivan:/bin/bash
petr:x:1002:1002::/home/petr:/bin/bash

14:38:48

#cat passwd | egrep '[^0]0{2,}[^0]'

libuuid:x:100:101::/var/lib/libuuid:/bin/sh
user:x:1000:1000:user,,,:/home/user:/bin/bash
ivan:x:1001:1001::/home/ivan:/bin/bash
petr:x:1002:1002::/home/petr:/bin/bash

14:39:01

#cat passwd | egrep '10{2}2'

petr:x:1002:1002::/home/petr:/bin/bash

14:39:15

#cat passwd | egrep '10+2'

sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
petr:x:1002:1002::/home/petr:/bin/bash

14:39:26

#cat passwd | egrep '[^0]{2,}[^0]'

root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/bin/sh
man:x:6:12:man:/var/cache/man:/bin/sh
lp:x:7:7:lp:/var/spool/lpd:/bin/sh
mail:x:8:8:mail:/var/mail:/bin/sh
news:x:9:9:news:/var/spool/news:/bin/sh
...
list:x:38:38:Mailing List Manager:/var/list:/bin/sh
irc:x:39:39:ircd:/var/run/ircd:/bin/sh
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
libuuid:x:100:101::/var/lib/libuuid:/bin/sh
Debian-exim:x:101:103::/var/spool/exim4:/bin/false
user:x:1000:1000:user,,,:/home/user:/bin/bash
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
ivan:x:1001:1001::/home/ivan:/bin/bash
petr:x:1002:1002::/home/petr:/bin/bash

14:39:47

#cat passwd | egrep '10{2}2'

petr:x:1002:1002::/home/petr:/bin/bash

14:39:55

#cat passwd | egrep '10*2'

man:x:6:12:man:/var/cache/man:/bin/sh
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
petr:x:1002:1002::/home/petr:/bin/bash

14:40:40

#cat passwd | egrep '10?2'

man:x:6:12:man:/var/cache/man:/bin/sh
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin

14:41:25

#cat passwd | egrep '1(00)?2'

man:x:6:12:man:/var/cache/man:/bin/sh
petr:x:1002:1002::/home/petr:/bin/bash

14:43:25

#cat passwd | egrep '1(00|0)?2'

man:x:6:12:man:/var/cache/man:/bin/sh
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
petr:x:1002:1002::/home/petr:/bin/bash

14:44:12

#cat passwd | egrep '1(00|0)?2'

man:x:6:12:man:/var/cache/man:/bin/sh
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
petr:x:1002:1002::/home/petr:/bin/bash

14:44:19

#vi ip.txt

--- /dev/null	2017-09-01 14:49:28.236000001 +0300
+++ ip.txt	2017-09-05 15:47:47.777958426 +0300
@@ -0,0 +1,10 @@
+2.3.3.4
+5.33.44.44
+55.66.77.88
+33.33.33.33
+11.111.111.111
+33.4.55.111
+666.666.666.666
+777.777.77.777
+444.dfd.44d.dd
+666.77.dd.dd

14:47:47

#cat i

install  ip.txt

14:47:47

#cat ip.txt

2.3.3.4
5.33.44.44
55.66.77.88
33.33.33.33
11.111.111.111
33.4.55.111
666.666.666.666
777.777.77.777
444.dfd.44d.dd
666.77.dd.dd

14:47:54

#egrep '[1-9]' ip.txt

2.3.3.4
5.33.44.44
55.66.77.88
33.33.33.33
11.111.111.111
33.4.55.111
666.666.666.666
777.777.77.777
444.dfd.44d.dd
666.77.dd.dd

14:49:33

#egrep '[1-9]\.' ip.txt

2.3.3.4
5.33.44.44
55.66.77.88
33.33.33.33
11.111.111.111
33.4.55.111
666.666.666.666
777.777.77.777
444.dfd.44d.dd
666.77.dd.dd

14:49:45

#egrep '^[1-9]\.' ip.txt

2.3.3.4
5.33.44.44

14:50:00

#egrep '^([1-9])?\.' ip.txt

2.3.3.4
5.33.44.44

14:50:39

#egrep '([1-9])?\.' ip.txt

2.3.3.4
5.33.44.44
55.66.77.88
33.33.33.33
11.111.111.111
33.4.55.111
666.666.666.666
777.777.77.777
444.dfd.44d.dd
666.77.dd.dd

14:51:32

#egrep '([1-9])?\.^Cip.txt

14:51:45

#egrep '([1-9])?\.([1-9])?\.([1-9])?\.([1-9])?\.' ip.txt

14:51:56

#egrep '([1-9])?\.([1-9])?\.([1-9])?\.([1-9])?\' ip.txt

egrep: Обратная косая черта в конце

Журнал лабораторных работ

Журнал

Вторник (09/05/17)