2018-04-Ubuntu Linux基礎 / 2018-04 Ubuntu

Transcript

1. 1 0
   2
   
   

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2. 
   
   
   

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3. =0 12 S 4 6
   l
   l
   = 1 1 . 2
   L4 6
   l
   l
   
   lsb_release -a
   l 2
   

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4. 
   
   
   l
   
   
   l
   

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5. 
   
   cd /usr/share/doc
   l /usr/share/doc
   pwd
   l
   cd
   l
   ls
   l
   l ls -a, ls -F, ls -l
   

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6. 
   
   mkdir foo
   l
   cd foo
   touch bar
   l
   l
   cd ..
   l
   

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7. tree
   sudo apt install tree
   tree .
   l .
   
   l .
   
   

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8. 
   
   rmdir foo
   l D
   l ' ' '
   l D
   rm foo/bar
   l foo/bar
   rmdir foo
   l :
   

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10. 
    
    mkdir hoge
    touch hoge/piyo
    rm -r hoge
    l hoge "
    
    l !"
    
    
    sudo rm -rf /
    

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11. 
    ,
    l less more lv
    
    l q
    l
    l b
    
    l ls -l /etc | less
    

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12. 
    less /etc/passwd
    l #!
    l %30% /etc/shadow
    sudo less /etc/shadow
    l %'2,"1+
    l '2,"
    &-)/*.(
    less /etc/group
    l $ !
    

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13. 
    nano
    l sudo apt install nano
    l S CV
    l E
    vim emacs
    l E
    l C ( + + E
    + , )+ )
    

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14. 
    man ls
    l
    
    man nano
    

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15. 
    id -a
    
    l D
    I
    
    l
    

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16. S
    l
    S O
    S
    l sudo less /etc/shadow
    0
    l sudo id -a
    0
    

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17. 
    ls -l /etc/shadow
    l -rw-r----- 1 root shadow 978 Feb 6 14:30 /etc/shadow
    cd; cp /etc/shadow ./
    l shadow
    l ' / / /
    l P :
    P -rw-r-----
    root
    shadow
    978
    

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18. 
    !# 3-
    )&
    "3-
    )&
    ./%'0
    l ,5*" 1
    2+ !#
    $.(4
    -|rw-|r--|---
    ",5*
    ",5"
    1
    

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19. 
    sudo cp /etc/shadow ./
    l root shadow
    l cp
    & # !')root & # !$%"
    ls –l ./shadow
    l -rw-r----- 1 root root 978 Jun 29 17:46 ./shadow
    sudo chmod 664 ./shadow
    l 664
    
    l 1=x, 2=w, 4=r *(6=2+4=rw
    ls –l ./shadow
    l -rw-rw-r-- 1 root root 978 Jun 29 17:46 ./shadow
    

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20. 
    less ./shadow
    l
    touch ./shadow
    l touch: cannot touch 'shadow': Permission denied
    l !"
    sudo chown kota_uchida ./shadow
    l
    # kota_uchida !
    ls –l ./shadow
    l -rw-rw-r-- 1 kota_uchida root 978 Jun 29 17:46 ./shadow
    touch ./shadow
    l
    

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21. I 0
    -
    
    

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22. man 5 interfaces
    l D man man
    sudo nano /etc/network/interfaces
    auto eth0
    iface eth0 inet static
    address I 12 5
    netmask 255.255.240.0
    gateway
    dns-nameservers
    

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23. sudo reboot
    l reboot ifdown ifup
    sudo ifdown eth0; sudo ifup eth0
    ssh
    l
    !
    

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24. 
    
    

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25. 
    OS d
    OS d
    ps ux
    l OS
    sudo ps auxwwe | less
    l OS
    l e
    kill PID
    l OS OS S
    l a OS
    l kill -9 -1
    

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26. 
    
    
    $ cat > sleep_echo.sh
    #!/bin/sh
    sleep $1
    echo hello
    
    $ chmod +x sleep_echo.sh
    

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27. 
    
    C
    0 l
    ./sleep_echo.sh 10
    l C
    l /
    l fg/bg C Z
    l jobs 1 +
    ./sleep_echo.sh 10 &
    l +
    

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28. 
    
    l 0 P
    true 0false P
    S
    l true
    l echo $?
    l false
    l echo $?
    l set -e
    l false
    $?
    "
    

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30. 
    
    l a e
    l
    ( () d3
    man 3 daemon
    l sudo apt install manpages-dev
    l man 3 daemon
    

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31. 0 - cn
    b : : Wa U 0 - h ld
    i
    m b je
    l / 6 -. 16 . - /.- 0 1 2 . #
    -. .2 6 . -. -. .2 6 .
    -. / 2 0 - 20 :
    

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32. 
    

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33. 
    
    
    l man bash
    l sudo apt install bash-doc; info bash
    ) (
    l chsh
    l ) ,
    

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