Журнал лабораторных работ

Sanging shell for user user...
Sanging shell for user ivan...
Sanging shell for user petr...

./shell.sh: line 5: =bash: команда не найдена
Sanging shel() for user user...
Sanging shel() for user ivan...
Sanging shel() for user petr...

Sanging shel(bash) for user user...
Sanging shel(bash) for user ivan...
Sanging shel(bash) for user petr...

--help

-h

--h

echo: echo [-neE] [arg ...]
    Write arguments to the standard output.
    Display the ARGs on the standard output followed by a newline.
    Options:
      -n        do not append a newline
      -e        enable interpretation of the following backslash escapes
      -E        explicitly suppress interpretation of backslash escapes
    `echo' interprets the following backslash-escaped characters:
      \a        alert (bell)
      \b        backspace
...
      \r        carriage return
      \t        horizontal tab
      \v        vertical tab
      \\        backslash
      \0nnn     the character whose ASCII code is NNN (octal).  NNN can be
        0 to 3 octal digits
      \xHH      the eight-bit character whose value is HH (hexadecimal).  HH
        can be one or two hex digits
    Exit Status:
    Returns success unless a write error occurs.

Sanging shel(zsh) for user user...
Sanging shel(zsh) for user ivan...
Sanging shel(zsh) for user petr...

x86_64

t=25

25=25

25

root@debian1:~# pstree
init─┬─acpid
     ├─cron
     ├─exim4
     ├─6*[getty]
     ├─2*[l3-agent]
     ├─rsyslogd───3*[{rsyslogd}]
     ├─2*[script───l3script]
     ├─script───l3script───6*[vi]
     ├─sshd─┬─sshd───bash───script───script───l3script─┬─bash───pstree
     │      │                                          └─3*[vi]
     │      └─sshd───sshd───bash───script───script───l3script─┬─less
     │                                                        └─3*[man───pager]
     └─udevd
root@debian1:~# exit
exit

root@debian1:~# echo $t
25
root@debian1:~# exit
exit

Chaning shell (bash) for user user...
Chaning shell (bash) for user ivan...
Chaning shell (bash) for user petr...

SHELL=/bin/bash
TERM=xterm
HISTSIZE=2000
SSH_CLIENT=192.168.16.123 49158 22
L3_PARENT_TTY=/dev/pts/4
OLDPWD=/usr/share/man
L3_TAMPERED_EDITORS= vi vim pico nano
SSH_TTY=/dev/pts/4
USER=root
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
MAIL=/var/mail/root
L3_SESSION_ID=218773071363958840-1504677427
PWD=/root
LANG=ru_RU.UTF-8

0

1

1

0

[6] 21104

[1]   Stopped                 /usr/bin/vi "$@"
[2]   Stopped                 /usr/bin/vi "$@"
[3]   Stopped                 /usr/bin/vi "$@"
[4]-  Stopped                 /usr/bin/vi "$@"
[5]+  Stopped                 /usr/bin/vi "$@"
[6]   Running                 ping -c100 8.8.8.8 &>report.txt &

[1]+  Stopped                 /usr/bin/vi "$@"

[2]+  Stopped                 /usr/bin/vi "$@"

[3]+  Stopped                 /usr/bin/vi "$@"

[4]+  Stopped                 /usr/bin/vi "$@"

[5]+  Stopped                 /usr/bin/vi "$@"

[6]   Завершено      ping -c100 8.8.8.8 &>report.txt

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=46 time=45.8 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=46 time=53.3 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=46 time=53.7 ms
64 bytes from 8.8.8.8: icmp_req=4 ttl=46 time=46.9 ms
64 bytes from 8.8.8.8: icmp_req=5 ttl=46 time=62.9 ms
64 bytes from 8.8.8.8: icmp_req=6 ttl=46 time=48.2 ms
64 bytes from 8.8.8.8: icmp_req=7 ttl=46 time=46.1 ms
64 bytes from 8.8.8.8: icmp_req=8 ttl=46 time=45.8 ms
64 bytes from 8.8.8.8: icmp_req=9 ttl=46 time=60.6 ms
...
64 bytes from 8.8.8.8: icmp_req=45 ttl=46 time=47.3 ms
64 bytes from 8.8.8.8: icmp_req=46 ttl=46 time=46.6 ms
64 bytes from 8.8.8.8: icmp_req=47 ttl=46 time=61.5 ms
64 bytes from 8.8.8.8: icmp_req=48 ttl=46 time=49.4 ms
64 bytes from 8.8.8.8: icmp_req=49 ttl=46 time=49.0 ms
64 bytes from 8.8.8.8: icmp_req=50 ttl=46 time=63.0 ms
64 bytes from 8.8.8.8: icmp_req=51 ttl=46 time=48.9 ms
64 bytes from 8.8.8.8: icmp_req=52 ttl=46 time=45.6 ms
64 bytes from 8.8.8.8: icmp_req=53 ttl=46 time=45.7 ms
64 bytes from 8.8.8.8: icmp_req=54 ttl=46 time=45.7 ms

[1]   Stopped                 /usr/bin/vi "$@"
[2]   Stopped                 /usr/bin/vi "$@"
[3]   Stopped                 /usr/bin/vi "$@"
[4]-  Stopped                 /usr/bin/vi "$@"
[5]+  Stopped                 /usr/bin/vi "$@"

^Z
[6]+  Stopped                 ping -c100 8.8.8.8 &>report.txt

[1] /usr/bin/vi "$@" &
[1]+  Stopped                 /usr/bin/vi "$@"

[6]- ping -c100 8.8.8.8 &>report.txt &

.
├── 2
├── d1
│   ├── f1
│   └── f2
├── d2
│   └── d3
│       ├── f1
│       └── f2
├── f1 -> /root/d1/f1
├── f1H
├── install
├── ip.txt
├── messages
├── passwd
├── passwd.new
├── report.txt
├── shell.sh
└── syslog
3 directories, 15 files

0

0

$?

$?

--- /tmp/l3-saved-21322.18182.25919	2017-09-06 15:08:08.205918480 +0300
+++ proc.sh	2017-09-06 15:12:38.601951352 +0300
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+i=1
+
+while [$i -lt 100000 ]
+ do
+  echo $i > /dev/pts/2
+  clear > /dev/pts/2
+  i=$[$i+1]
+ done

root     pts/4        2017-09-06 14:50 (192.168.16.123)

root     pts/4        2017-09-06 14:50 (192.168.16.123)
user     pts/8        2017-09-06 15:13 (192.168.16.123)

--- /tmp/l3-saved-21322.6432.6618	2017-09-06 15:13:29.625949249 +0300
+++ proc.sh	2017-09-06 15:13:45.669947285 +0300
@@ -4,7 +4,7 @@
 
 while [$i -lt 100000 ]
  do
-  echo $i > /dev/pts/2
-  clear > /dev/pts/2
+  echo $i > /dev/pts/8
+  clear > /dev/pts/8
   i=$[$i+1]
  done

root     pts/4        2017-09-06 14:50 (192.168.16.123)
user     pts/8        2017-09-06 15:13 (192.168.16.123)

./proc.sh: line 5: [1: команда не найдена

--- /tmp/l3-saved-21322.21607.24660	2017-09-06 15:14:21.777949159 +0300
+++ proc.sh	2017-09-06 15:15:41.281957522 +0300
@@ -2,7 +2,7 @@
 
 i=1
 
-while [$i -lt 100000 ]
+while [ $i -lt 10000 ]
  do
   echo $i > /dev/pts/8
   clear > /dev/pts/8

[1]+  Stopped                 ./proc.sh

[1]+  Завершено      ./proc.sh

0

#!/bin/bash
i=1
while [ $i -lt 10000 ]
 do
  echo $i > /dev/pts/8
  clear > /dev/pts/8
  i=$[$i+1]
 done

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/zsh

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

Изменение информации о пользователе ivan
Введите новое значение или нажмите ENTER для выбора значения по умолчанию
        Полное имя []: Ivan
        Номер комнаты []: 404
        Рабочий телефон []: 7-11-99
        Домашний телефон []:
        Другое []: Temp user

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:Ivan,404,7-11-99,,Temp user:/home/ivan:/bin/bash
petr:x:1002:1002::/home/petr:/bin/bash

Login: ivan                             Name: Ivan
Directory: /home/ivan                   Shell: /bin/bash
Office: 404, 7-11-99
Last login Tue Sep  5 09:29 (EEST) on pts/6 from 192.168.16.123
No mail.
No Plan.

# Default values for useradd(8)
#
# The SHELL variable specifies the default login shell on your
# system.
# Similar to DHSELL in adduser. However, we use "sh" here because
# useradd is a low level utility and should be as general
# as possible
SHELL=/bin/sh
#
# The default group for users
...
# EXPIRE=
#
# The SKEL variable specifies the directory containing "skeletal" user
# files; in other words, files such as a sample .profile that will be
# copied to the new user's home directory when it is created.
# SKEL=/etc/skel
#
# Defines whether the mail spool should be created while
# creating the account
# CREATE_MAIL_SPOOL=yes

--- /tmp/l3-saved-20834.22224.6307	2017-09-07 09:31:33.393943638 +0300
+++ /etc/default/useradd	2017-09-07 09:34:05.525945667 +0300
@@ -5,7 +5,7 @@
 # Similar to DHSELL in adduser. However, we use "sh" here because
 # useradd is a low level utility and should be as general
 # as possible
-SHELL=/bin/sh
+SHELL=/bin/bash
 #
 # The default group for users
 # 100=users on Debian systems

Последний раз пароль был изменён                                    : Сен 04, 2017
Срок действия пароля истекает                                 : никогда
Пароль будет деактивирован через                                   : никогда
Срок действия учётной записи истекает                                          : никогда
Минимальное количество дней между сменой пароля               : 0
Максимальное количество дней между сменой пароля             : 99999
Количество дней с предупреждением перед деактивацией пароля        : 7

#~

gai.conf  groff/    group     group-    grub.d/   gshadow   gshadow-