쉘 프로그래밍(bash)_2 / day30

1. CMD 자동입력, 파일 자동복사.

200, 201, 202 에서 동시에 입력하는 CMD , CP 를 진행 하도록 하자.

 1) CMD 자동입력

#!/bin/bash

IP=192.168.10

if [ ] ; then
    echo "Usage: $0 <CMD OPTS ARGS>"
    exit 1
fi

for HOST in $IP.200 $IP.201 $IP.202
do
    echo "========$HOST========"
    ssh $HOST $*
    echo
done

 2) CP 자동입력

#!/bin/bash

IP=192.168.10

if [ $# -ne 2 ] ; then
    echo "Usage: $0 <FILE> <DIR>"
    exit 1
fi

FILE1=$1
DIR1=$2

for HOST in $IP.200 $IP.201 $IP.202
do
    echo "========$HOST========"
    scp -r $FILE1 $HOST:$DIR1
    echo
done

 3) FTP 자동화

#!/bin/bash

SERVERINFO=/root/bin/server.txt

cat $SERVERINFO | while read IP1 UNAME UPASS
do
	# echo "$IP1 : $UNAME $UPASS"
	ftp -n $IP1 << E0F
	user #UNAME $UPASS
	cd /tmp
	lcd /test
	bin
	hash
	prompt
	mput linux200.txt
	bye
E0F
 
done

 * $IP1에 EOF 를 입력값으로 받은걸 확인할 수 있다.

 

 

2. 원격 서버 자동명령 프로그램.

telnet 을 통해 원격 서버 자동 명령 프로그램을 작성한다.

[root@linux200 ~/bin]# cat server.list
192.168.10.200	root	soldesk1.
192.168.10.201	fedora	fedora
192.168.10.202	user01	user01
 * 위 리스트 파일을 참조하여 제작한다.
 
 #!/bin/bash

SERVERINFO=/root/bin/server.list

cat $SERVERINFO | while read IP UNAME UPASS
do
    echo "========$IP========"
    cmd (){
        sleep 2 ; echo "$UNAME"
        sleep 1 ; echo "$UPASS"
        sleep 3 ; echo 'hostname'
        sleep 1 ; echo 'date'
        sleep 1 ; echo 'exit'
}
    cmd | telnet $IP
    echo
done

 [추가] auto telnet + ftp 동시구현하는 프로그램 제작

#!/bin/bash

# auto Telnet
IP1=192.168.10.201
UNAME='root'
UPASS='soldesk1.'
BACKUP=home.tar.gz
BACKUPTARGET=/etc/sysconfig
cmd (){
    sleep 2 ; echo "$UNAME"
    sleep 1 ; echo "$UPASS"
    sleep 3 ; echo 'hostname'
    sleep 1 ; echo 'mkdir -p /backup'
    sleep 1 ; echo "tar czf /backup/$BACKUP $BACKUPTARGET"
    sleep 1 ; echo 'exit'
}
cmd | telnet $IP1

#  auto FTP
ftp -n $IP1 <<EOF
	user #UNAME $UPASS
	cd /backup
	lcd /test
	bin
	hash
	prompt
	mput $BACKUP
	bye
EOF

ls -l /test/$BACKUP*

[실습] server ON/OFF 유무 확인 후 서버 자동종료 프로그램

#!/bin/bash

SERVER=/root/bin/server.list

cat $SERVER | while read IP UNAME UPASS
do
    ping -c2 $IP >/dev/null 2>&1
    
    if [ $? -eq 0 ] ; then
        cmd() {
        sleep 2 ; echo "$UNAME"
        sleep 1 ; echo "$UPASS"
        sleep 1 ; wall 'server down for 3 second'
        sleep 3 ; echo 'reboot'
        sleep 0.5 ; echo 'exit'
        }
    else
        echo "====================="
        echo " $UNAME is not on server. "
        echo "====================="
    fi
cmd | telnet $IP
done

 

3. 파일 확장자 자동변경 프로그램

파일의 확장자를 자동 변경하는 프로그램을 제작해보자.

#!/bin/bash

if [ $# -ne 1 ] ; then
    echo " Usage : $0 <dir>"
    exit 1
fi

WORK=$1
FILE=/tmp/.tmp1
EXT1=txt
EXT2=els

ls -1 $WORK | grep ".${EXT1}" > $FILE
for CFILE in $(cat $FILE)
do
    mv $WORK/$CFILE $(echo $WORK/$CFILE | sed "s/${EXT1}\$/$EXT2/g")
done

 

4. 환경설정 자동세팅 프로그램

telnet와 vsftp를 자동으로 설치 및 환경설정 서비스on등.. 작업과 bashrc 환경설정을 바꿔주고, 소프트웨어도 설치하는 프로그램을 작성한다.

 1) 전체 실행하는 프로그램

/bin/bash

./env1.sh
./env2.sh
./env3.sh

 2) telnet 설치 및 설정

#!/bin/bash

PKG_NAME="telnet telnet-server"
PKG_EN="telnet.socket"
PKG_CONF="/etc/securetty"
PKG_FW="telnet"

#  package install (telnet, telnet-server)
echo " [ LOAD ] install packahes... - $PKG_NAME "
yum install -q -y $PKG_NAME >/dev/null 2>&1
rpm -q $PKG_NAME >/dev/null 2>&1
if [ $? -eq 0 ] ; then
    echo " [  OK  ] packages installed! - $PKG_NAME "
else
    echo " [ FAIL ] packages not install. - $PKG_NAME "
    exit 1
fi


# service enable
echo " [ LOAD ] Enable service.. - $PKG_EN "
systemctl enable $PKG_EN >/dev/null 2>&1
ENABLE_STATUS=$(systemctl is-enabled $PKG_EN)
systemctl restart $PKG_EN >/dev/null 2>&1
START_STATUS=$(systemctl is-active $PKG_EN)

if [ $ENABLE_STATUS = enabled -a $START_STATUS = active ] ; then
    echo " [  OK  ] the service is started now ! - $PKG_EN "
else
    echo " [ FAIL ] the service is not start - $PKG_EN "
    exit 2
fi


# service configuration
echo " [ LOAD ] configuration $PKG_NAME service. "
grep -q 'pts/' $PKG_CONF
if [ $? -ne 0 ] ; then
    for i in $(seq 0 11)
    do
        echo "pts/$i" >> $PKG_CONF
    done
else
    echo " [ FAIL ] $PKG_NAME service already "
fi
echo " [  OK  ] $PKG_NAME service has been set up "


# firewall configration
FW_STATUS=$(systemctl is-active firewalld)
echo " [ LOAD ] firewall configration ... "
if [ $FW_STATUS = 'active' ] ; then
    firewall-cmd --add-server $PKG_FW >/dev/null 2>&1
    firewall-cmd --reload >/dev/null 2>&1
    echo " [  OK  ] firewall service has been set up "
else
    echo " [ FAIL ] firewall service desable "
    exit 3
fi

 3) bashrc 환경걸정

#!/bin/bash

BASHRC=$HOME/.bashrc

grep -q 'THIS contents was added automatically' $BASHRC
if [ $? -ne 0 ] ; then
cat << EOF >> $BASHRC
# ======= START: THIS contents was added automatically ======= #
#
# Sfecific Configuration
#


# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

# Source global definitions
if [ -f /etc/bashrc ]; then
   . /etc/bashrc
fi

#
# Sfecific Configuration
#

#
# (1) Alias
#
alias c='clear'
alias ls='/bin/ls --color=tty -h'
alias grep='/bin/grep --color -i'
alias vi='/usr/bin/vim'
alias df='df -T -h'
alias dff='df -T -h ; echo ; df -i'
alias pss='ps -ef | head -1 ; ps -ef | grep $1'

#
# (2) Variable Definition
#
#export PS1='[\u@\h \w]\$'
export HISTTIMEFORMAT='%C %T'
#export PS1='\[\032[01;31m\][\h:\w]\[\032[00m\]\$'
export PS1='\[\033[01;32m\][\h:\w]\[\033[00m\]\$ '

#
# (3) bash Shell Function 
#
set -o vi

#
# (4) SHell SCript
#
alias aa='chmod 755 /root/bin/*.sh'

======= END: THIS contents was added automatically ======= 
EOF

fi

 4) 소프트웨어 설치

#!/bin/bash

#gcc
yum -q -y install gcc >/dev/null 2>&1
echo "[  OK  ] service installed. - gcc"
#tree
yum -q -y install tree >/dev/null 2>&1
echo "[  OK  ] service installed. - tree "

 [실습] vsftp 를 주제로 제작.

 

 

5. 네트워크 설정 점검 프로그램

 1. local 통신 가능여부 2. gateway 통신 가능여부 3. dns 통신 가능여부 를 테스트 하는 프로그램을 작성한다.

#!/bin/bash

LOCAL=192.168.10.201
GATEWAY=8.8.8.8
DNS=www.daum.net

. functions.sh

# local server test

echo "======================================================"
ping -c 1 $LOCAL >/dev/null 2>&1
print_info "ping $LOCAL"
if [ $? -eq 0 ] ; then
    print_good "[  OK  ] Local Netwark Connection !!"
else
    print_error "[ FAIL ] Local Network Connection
    (A) VMware >  Edit > Virtual Network Editor
    (B) VMware > VM > Settings > Network Adapter
    (C) # ifconfig "   
fi

# external gateway test

ping -c 1 $GATEWAY >/dev/null 2>&1
print_info "ping $GATEWAY"
if [ $? -eq 0 ] ; then
    print_good "[  OK  ] External Netwrok Connection !! "
else
    print_error "[ FAIL ] External Network Connection
    (A) # netstat -nr (# route -n)  " 
fi

# DNS server test

nslookup $DNS >/dev/null 2>&1
print_info "ping $DNS"
if [ $? -eq 0 ] ; then
    print_good "[  OK  ] DNS Client Configuration !!"
else
    print_error "[ FAIL ] DNS Client Configuration
    (A) # cat /etc/resolv.conf "
fi
echo "======================================================"

 

6. 퍼미션 점검 프로그램 제작하기.

find -perm옵션을 활용하여 퍼미션을 점검하는 프로그램을 제작한다. 644 퍼미션 이하를 기준으로 삼는다.

 * find -perm -644 = 644 이상 ( 단 이하의 경우는 없다. )

 

#!/bin/bash

FILE1=/root/bin/pem/perm.list
RESULT=/root/bin/pem/result.txt
TMP1=/tmp/tmp1
> $RESULT

cat $FILE1 | while read FILENAME PERM1 PERM2
do
   #echo "$FILENAME : $PERM1 : $PERM2"
   
   if [ -f $FILENAME ] ; then
      find $FILENAME -type f -perm -$PERM1 -ls \
          | fgrep -v "$PERM2" > $TMP1
      if [ -s $TMP1 ] ; then
         BADPERM=$(cat $TMP1 | awk '{print $3}')
         echo "[ WARN ] $PERM2 : $FILENAME  변경 내용 : ($BADPERM)" >> $RESULT
      
      else 
         echo "[  OK  ] $PERM2 : $FILENAME" >> $RESULT
      fi
   else
      echo "[ ERROR ] $FILENAME not found." >> $RESULT
   fi