開頭加解釋器:#!/bin/bash
語法縮進(jìn),使用四個空格;多加注釋說明。
命名建議規(guī)則:變量名大寫、局部變量小寫,函數(shù)名小寫,名字體現(xiàn)出實際作用。
默認(rèn)變量是全局的,在函數(shù)中變量local指定為局部變量,避免污染其他作用域。
有兩個命令能幫助我調(diào)試腳本:set -e 遇到執(zhí)行非0時退出腳本,set-x 打印執(zhí)行過程。
寫腳本一定先測試再到生產(chǎn)上。
#!/bin/bash#一月前historyTime=$(date "+%Y-%m-%d %H" -d '1 month ago')echo ${historyTime}historyTimeStamp=$(date -d "$historyTime" +%s)echo ${historyTimeStamp} #一周前$(date "+%Y-%m-%d %H" -d '7 day ago') #本月一月一日date_this_month=`date +%Y%m01` #一天前date_today=`date -d '1 day ago' +%Y%m%d` #一小時前$(date "+%Y-%m-%d %H" -d '-1 hours')
#!/bin/bashDATE=$(date +%d/%b/%Y:%H:%M)#nginx日志LOG_FILE=/usr/local/nginx/logs/demo2.access.log#分析ip的訪問情況ABNORMAL_IP=$(tail -n5000 $LOG_FILE |grep $DATE |awk '{a[$1]++}END{for(i in a)if(a[i]>10)print i}')for IP in $ABNORMAL_IP; do if [ $(iptables -vnL |grep -c "$IP") -eq 0 ]; then iptables -I INPUT -s $IP -j DROP echo "$(date +'%F_%T') $IP" >> /tmp/drop_ip.log fidone
#!/bin/bashUSER_LIST=$@USER_FILE=./user.infofor USER in $USER_LIST;do if ! id $USER &>/dev/null; then PASS=$(echo $RANDOM |md5sum |cut -c 1-8) useradd $USER echo $PASS | passwd --stdin $USER &>/dev/null echo "$USER $PASS" >> $USER_FILE echo "$USER User create successful." else echo "$USER User already exists!" fidone
#/bin/sh
install_dir="/var/www/html"
#Creating Random WP Database Credenitals
db_name="wp`date +%s`"
db_user=$db_name
db_password=`date |md5sum |cut -c '1-12'`
sleep 1
mysqlrootpass=`date |md5sum |cut -c '1-12'`
sleep 1
#### Install Packages for https and mysql
apt -y install apache2
apt -y install mysql-server
#### Start http
rm /var/www/html/index.html
systemctl enable apache2
systemctl start apache2
#### Start mysql and set root password
systemctl enable mysql
systemctl start mysql
/usr/bin/mysql -e "USE mysql;"
/usr/bin/mysql -e "UPDATE user SET Password=PASSWORD($mysqlrootpass) WHERE user='root';"
/usr/bin/mysql -e "FLUSH PRIVILEGES;"
touch /root/.my.cnf
chmod 640 /root/.my.cnf
echo "[client]">>/root/.my.cnf
echo "user=root">>/root/.my.cnf
echo "password="$mysqlrootpass>>/root/.my.cnf
####Install PHP
apt -y install php
apt -y php-mysql
apt -y php-gd
sed -i '0,/AllowOverride\ None/! {0,/AllowOverride\ None/ s/AllowOverride\ None/AllowOverride\ All/}' /etc/apache2/apache2.conf #Allow htaccess usage
systemctl restart apache2
####Download and extract latest WordPress Package
if test -f /tmp/latest.tar.gz
then
echo "WP is already downloaded."
else
echo "Downloading WordPress"
cd /tmp/ && wget "http://wordpress.org/latest.tar.gz";
fi
/bin/tar -C $install_dir -zxf /tmp/latest.tar.gz --strip-components=1
chown www-data: $install_dir -R
#### Create WP-config and set DB credentials
/bin/mv $install_dir/wp-config-sample.php $install_dir/wp-config.php
/bin/sed -i "s/database_name_here/$db_name/g" $install_dir/wp-config.php
/bin/sed -i "s/username_here/$db_user/g" $install_dir/wp-config.php
/bin/sed -i "s/password_here/$db_password/g" $install_dir/wp-config.php
cat << EOF >> $install_dir/wp-config.php
define('FS_METHOD', 'direct');
EOF
cat << EOF >> $install_dir/.htaccess
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
EOF
chown www-data: $install_dir -R
##### Set WP Salts
grep -A50 'table_prefix' $install_dir/wp-config.php > /tmp/wp-tmp-config
/bin/sed -i '/**#@/,/$p/d' $install_dir/wp-config.php
/usr/bin/lynx --dump -width 200 https://api.wordpress.org/secret-key/1.1/salt/ >> $install_dir/wp-config.php
/bin/cat /tmp/wp-tmp-config >> $install_dir/wp-config.php && rm /tmp/wp-tmp-config -f
/usr/bin/mysql -u root -e "CREATE DATABASE $db_name"
/usr/bin/mysql -u root -e "CREATE USER '$db_name'@'localhost' IDENTIFIED WITH mysql_native_password BY '$db_password';"
/usr/bin/mysql -u root -e "GRANT ALL PRIVILEGES ON $db_name.* TO '$db_user'@'localhost';"
######Display generated passwords to log file.
echo "Database Name: " $db_name
echo "Database User: " $db_user
echo "Database Password: " $db_password
echo "Mysql root password: " $mysqlrootpass
#!/bin/sh
# Database info
DB_USER="batsing"
DB_PASS="batsingpw"
DB_HOST="localhost"
DB_NAME="timepusher"
# 一些變量
BIN_DIR="/usr/bin" #mysql bin路徑
BCK_DIR="/mnt/mysqlBackup" #備份文件目錄
DATE=`date +%F`
# TODO
# /usr/bin/mysqldump --opt -ubatsing -pbatsingpw -hlocalhost timepusher > /mnt/mysqlBackup/db_`date +%F`.sql
$BIN_DIR/mysqldump --opt -u$DB_USER -p$DB_PASS -h$DB_HOST $DB_NAME > $BCK_DIR/db_$DATE.sql
#還原數(shù)據(jù)庫
#用mysql-front導(dǎo)入前一天的 *.sql 文件即可恢復(fù)數(shù)據(jù)
#!/bin/bash
DATE=$(date +%F_%H-%M-%S)
HOST=localhost
USER=backup
PASS=123.com
BACKUP_DIR=/data/db_backup
DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys")
for DB in $DB_LIST; do
BACKUP_NAME=$BACKUP_DIR/${DB}_${DATE}.sql
if ! mysqldump -h$HOST -u$USER -p$PASS -B $DB > $BACKUP_NAME 2>/dev/null; then
echo "$BACKUP_NAME 備份失敗!"
fi
done
#!/bin/bash
DATE=$(date +%F_%H-%M-%S)
HOST=localhost
USER=backup
PASS=123.com
BACKUP_DIR=/data/db_backup
DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys")
for DB in $DB_LIST; do
BACKUP_DB_DIR=$BACKUP_DIR/${DB}_${DATE}
[ ! -d $BACKUP_DB_DIR ] && mkdir -p $BACKUP_DB_DIR &>/dev/null
TABLE_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "use $DB;show tables;" 2>/dev/null)
for TABLE in $TABLE_LIST; do
BACKUP_NAME=$BACKUP_DB_DIR/${TABLE}.sql
if ! mysqldump -h$HOST -u$USER -p$PASS $DB $TABLE > $BACKUP_NAME 2>/dev/null; then
echo "$BACKUP_NAME 備份失敗!"
fi
done
done
#!/bin/bash#安裝目錄下日志文件base_log_path='/usr/local/openresty/nginx/logs/access.log'base_error_path='/usr/local/openresty/nginx/logs/error.log' #需要保存的目錄位置log_path='/data_lytdev_dir/nginx/logs/' #獲取月份log_month=$(date -d yesterday +"%Y%m") #獲取前一天日期 (第二天凌晨備份,即保存的日志就是當(dāng)天時間的日志)log_day=$(date -d yesterday +"%d") #在指定位置創(chuàng)建文件夾mkdir -p $log_path/$log_month #將安裝目錄下的日志文件,移動到指定存儲位置mv $base_log_path $log_path/$log_month/access_$log_day.logmv $base_error_path $log_path/$log_month/error_$log_day.log #再使用信號控制切割日志#USR1 表示nginx信號控制,切割日志kill -USR1 `cat /usr/local/openresty/nginx/logs/nginx.pid` #每天凌晨1點切割日志* 1 * * * /usr/local/openresty/nginx/logs/log_rotate.sh
#!/bin/bashdeclare -i min maxdeclare -a numsfor ((i=0;i<10;i++));do nums[$i]=$RANDOM [ $i -eq 0 ] && min=${nums[0]} && max=${nums[0]}&& continue [ ${nums[$i]} -gt $max ] && max=${nums[$i]} [ ${nums[$i]} -lt $min ] && min=${nums[$i]}doneecho "All numbers are ${nums[*]}"echo Max is $maxecho Min is $min
#!/bin/bashNIC=$1echo -e " In ------ Out"while true; do OLD_IN=$(awk '$0~"'$NIC'"{print $2}' /proc/net/dev) OLD_OUT=$(awk '$0~"'$NIC'"{print $10}' /proc/net/dev) sleep 1 NEW_IN=$(awk '$0~"'$NIC'"{print $2}' /proc/net/dev) NEW_OUT=$(awk '$0~"'$NIC'"{print $10}' /proc/net/dev) IN=$(printf "%.1f%s" "$((($NEW_IN-$OLD_IN)/1024))" "KB/s") OUT=$(printf "%.1f%s" "$((($NEW_OUT-$OLD_OUT)/1024))" "KB/s") echo "$IN $OUT" sleep 1done
來自:Linux迷