7/24/2019 Utilizare 12

1/37

7/24/2019 Utilizare 12

2/37

M

Back off, or I'll replace you with a small shell script.

19.12.2011 2

7/24/2019 Utilizare 12

3/37

S

19.12.2011 3

ACL

7/24/2019 Utilizare 12

4/37

S

19.12.2011 4

7/24/2019 Utilizare 12

5/37

C

F

, , , , .

P , , , , ,

E

19.12.2011 5

7/24/2019 Utilizare 12

6/37

S

S (I )

C 12 S S 12.4, 12.5, 12.6, 12.9

19.12.2011 6

7/24/2019 Utilizare 12

7/37

R, ... 6

I

O ,

E/

V

V

G

E

19.12.2011 7

7/24/2019 Utilizare 12

8/37

F

A . (U)

C

filtru < input_file > output_file

command1 | filtru | command2

W PS O

( )

( )

19.12.2011 8

7/24/2019 Utilizare 12

9/37

, , ,

C ? CTRL+D

cat n

( )

( )

19.12.2011 9

7/24/2019 Utilizare 12

10/37

,

head -10, head, head -n 10

10

head -n -20

20

tail -10, tail, tail -n -10

10

tail -n +21

21 ( 20)

19.12.2011 10

7/24/2019 Utilizare 12

11/37

S

S TAB

cut -f 1 < file

cut -f 1-3 < file

cut -f 1,4 -d : < /etc/passwd

19.12.2011 11

7/24/2019 Utilizare 12

12/37

T

T

tr a b < file

tr a-z A-Z < file

tr d < file

S ifconfig | tr -s | cut -d -f 2

tr -d -c A-Za-z < /dev/urandom | head -c 819.12.2011 12

7/24/2019 Utilizare 12

13/37

,

S

I

sort -n file

sort -r file

sort -u file, sort file | uniq

sort -k 3 file 3

19.12.2011 13

7/24/2019 Utilizare 12

14/37

C C

wc -l

wc -c

wc -w

19.12.2011 14

7/24/2019 Utilizare 12

15/37

E

F

grep pattern file

grep -r pattern /path/to/folder/

grep -v pattern file

grep -i pattern file

grep --color=auto

19.12.2011 15

7/24/2019 Utilizare 12

16/37

P

V ( 6)

I

I

F

19.12.2011 16

7/24/2019 Utilizare 12

17/37

if grep dan /etc/passwd; then

echo OK

else

echo NOK

fi

if test f /path/to/file; thenecho File exists

fi

if test $# -ne 1; then

echo Usage: $0 file

fi

19.12.2011 17

7/24/2019 Utilizare 12

18/37

(2)

P

0 = > !0 = >

test -f file

test -d file

test string1 = string2 test num1 -eq num2

test -z string1

19.12.2011 18

7/24/2019 Utilizare 12

19/37

,

for i in 1 2 3 4 5 6 7 8 9 10; do done

for ((i = 1; i

7/24/2019 Utilizare 12

20/37

,

while read a b c; do done < file

IFS=:; while read uname pass uid extra; do

if test $uid ge 1000; thenecho $uname

fi

done < /etc/passwd

19.12.2011 20

(2)

7/24/2019 Utilizare 12

21/37

, (2)

P ( )

0

(EOF)

( , )

IFS

19.12.2011 21

F

7/24/2019 Utilizare 12

22/37

F

hello()

{

echo hello

}

ip_for_hostname()

{

host $1 | head -1 | cut d f 4

}

DEBUG(){

test $_DEBUG eq 1 && $@

}

19.12.2011 22

F (2)

7/24/2019 Utilizare 12

23/37

F (2)

M

()

S ()

P

,

A

$#, $1, $2, $@

19.12.2011 23

7/24/2019 Utilizare 12

24/37

sed n /abc/p

sed n $=

sed 10q

sed s/ana/bogdan

sed s/ana/bogdan/g

19.12.2011 24

(2)

7/24/2019 Utilizare 12

25/37

(2)

S

C

S +

$= ( , )

10q( 10, )

s/ana/bogdan/g ( , )

1,10s/ana/bogdan/g ( 10 , )

/corina/s/ana/bogdan/g ( ,)

S 19.12.2011 25

7/24/2019 Utilizare 12

26/37

ifconfig | awk F [ \t]+ {print $5;}

dpkg -l apache2* | grep ^ii | awk F [ \t]+ {print

$2;}

< /etc/passwd awk F : { if ($3 >= 1000) print $1;}

19.12.2011 26

(2)

7/24/2019 Utilizare 12

27/37

(2)

++

L C

R $0

$1, $2,

NR ( )NF ( )

19.12.2011 27

R

7/24/2019 Utilizare 12

28/37

R

N // P, C, J, R, PHP .

M ( , )

N

C

,

N ( , *,

)

F

://../BFAQ19.12.2011 28

U MAC

7/24/2019 Utilizare 12

29/37

U MAC

#!/bin/bash

declare IFACE=eth1

declare URL="http://anaconda.cs.pub.ro/~razvan/school/uso/lab/macs/putmac.php"

declare MY_HWADDR

function getmac(){

MY_HWADDR=$(/sbin/ifconfig "$IFACE" | grep HW | awk -F '[ \t]+' '{print $5}')

}

function uploadmac()

{wget -o /dev/null "$URL?mac=$MY_HWADDR" &> /dev/null

}

function main()

{

getmacuploadmac

}

main

exit 0

19.12.2011 29

R

7/24/2019 Utilizare 12

30/37

R #!/bin/bash

BTDOWNLOADHEADLESS=/usr/bin/btdownloadheadless

TORRENT_FILE="$1"

DOWNLOAD_DIR="$2"

function check_alive()

{

ps -ef | grep $BTDOWNLOADHEADLESS | grep $TORRENT_FILE &> /dev/null

}

check_alive

if test $? -ne 0; then

pushd . &> /dev/null

cd $DOWNLOAD_DIR && nohup $BTDOWNLOADHEADLESS $TORRENT_FILE &>

/dev/null &

popd &> /dev/null

fi

exit 019.12.2011 30

M

7/24/2019 Utilizare 12

31/37

M

#!/bin/bash

IFS=","

INPUT_FILE=lists/cdl_2010_list.txt

while read username email name surname; do

./ldap_add $username $email $name $surname

done < $INPUT_FILE

exit 0

19.12.2011 31

M

7/24/2019 Utilizare 12

32/37

M

#!/bin/bash

#passwd_file fisier cu useri gen /etc/passwd

while read user skel_pass uid gid comm home shell; do

save_dir="/home/$user/old_anaconda

echo "$user $comm $home $shell

useradd -m -d /home/$user -g users -s $shell -c "${comm}" $user

mkdir ${save_dir}

chown $user:users ${save_dir}bash ./rsync.sh $home ${save_dir}

done < passwd_file

19.12.2011 32

S

7/24/2019 Utilizare 12

33/37

S

#!/bin/bash

# get subject

if test $# -ge 1; then

subject="$1"

else

echo -en "Subject: "read subject

fi

# get file

if test $# -ge 2; then

file="$2"

else

echo -en "File: "

read file

fi

# send mail to all LDAP accounts

for i in $(ldapsearch -x mail | grep mail: | cut -d " " -f 2); do

mail -s "$subject" $i < $file

done

exit 0

19.12.2011 33

W ?

7/24/2019 Utilizare 12

34/37

W ?

#!/bin/sed -f

{

s/\[\(http[^]]\+\)]/[[\1]]/g

s///g

s///gs///g

s///g

s//{{{/g

s//}}}/g

s//**/gs//**/g

s///g

s///g

s/[ \t]*\(.*\)/* \1/g

s/'''/**/gs/''/\/\//g

s/{{{\[\[/[[/g

s/\]\]}}}/]]/g

s/\(\[\[http:[^ ]\+\) /\1|/g

}

19.12.2011 34

C

7/24/2019 Utilizare 12

35/37

35

C

IFS

19.12.2011 35

R L

7/24/2019 Utilizare 12

36/37

36

R

://../

://./LDP///

://./.

://../1.

://..///.

://../BFAQ

19.12.2011 36

T E

7/24/2019 Utilizare 12

37/37

19.12.2011 37