Linux管理的艺术--Shell脚本一键搞定（二）

一．服务菜单脚本实例
#!/bin/sh

case $1 in
start)
service mysqld start &> /dev/null
echo "数据库启动成功"
;;
stop)
service mysqld stop &> /dev/null
echo "数据库停止成功"
;;
*)
echo "请输入start或者stop"
;;
esac
~

二．群发邮件脚本实例
#!/bin/sh
for aa in `cat /root/maillist`
do
mail $aa < /root/guanggao.html &> /dev/null
echo "$aa地址发送邮件成功"
done
三．新建用户脚本实例
#!/bin/sh
for aa in `cat /root/userlist`
do
adduser $aa
echo "123.com" | passwd --stdin $aa &> /dev/null
echo "$aa用户建立成功"
done
~

四．服务进程监控程序脚本实例
#!/bin/sh
if [ -f /var/run/httpd.pid ]
then
echo "web service ok!!" > /dev/tty12
else
service httpd restart > /dev/tty12
# mail aa@163.com < /root/httpermessage
fi

五．zebra系统服务启动脚本实例
#!/bin/sh
#
# chkconfig: 2345 99 60
# description: Starts and stops the X Font Serv

case $1 in
start)
/usr/local/sbin/zebra -d
echo "Zebra is up"
;;
stop)
killall -9 zebra
rm -rf /var/run/zebra.pid
echo "Zebra is down"
;;
restart)
killall -9 zebra &> /dev/null
rm -rf /var/run/zebra.pid
sleep 1
/usr/local/sbin/zebra -d &> /dev/null
echo "Zebra restart ok"
;;
status)
if [ -f /var/run/zebra.pid ]
then
echo "Zebra is runing..."
else
echo "Zebra is down...."
fi
;;
*)
echo "Usage: /etc/init.d/zebrad {start|stop|restart|status}"
esac

六．监控系统状态的脚本实例
# add 20 users one time
#!/bin/sh
i=1
num=20
pass=123456

while [ "$i" -le "$num" ]
do
user="stu$i"
if grep "$user" /etc/passwd >/dev/null
then
:
else
useradd "$user"
# passwd "$user" >/dev/null 2>&1 << EOF
#$pass
#$pass
#EOF
echo "$pass" | passwd --stdin "$user" >/dev/null 2>&1
fi
i=$((i+1))
done

# End of script

# To monitor cpu load by cmd "uptime"
# By licong on 2009/09/30

out_file=/tmp/uptime.out
mail_from=licong@aa.com
mail_to="licong@bb.com"
load_limit=1
> $out_file

field=$((`uptime | awk '{print NF}'` - 2))
load=$(uptime | awk '{print $'$field'}' | sed 's/,//')
load_int=$(echo $load | sed 's/\..*//')

if [ $load_int -ge $load_limit ]; then
(
echo -e "Load of cpu has exceeded $load \n"
date
echo
uptime
) > $out_file
fi

if [ -n $out_file -a -s $out_file ]; then
sendmail -f $mail_from -s "Load warming" $mail_to < $out_file
fi

rm -rf $out_file

# End of script

# My version of cp, ask for conferm

this_script=$(basename $0)

if [ $# -ne 2 ]
then
echo "Usage: $this_script from to"
exit 1
fi

from="$1"
to="$2"

if [ -e "$to" ]
then
echo -e "$to exists, overwrite (yes/no)? \c"
read answer
if [ "$answer" != yes ]
then
echo "copy not performed"
exit 0
fi
else
cp "$from" "$to"
fi

# End of script
七．带邮件通知功能的磁盘监控脚本实例
#
# Monit using of disk bf "df -m"
# By licong on 2010/07/21
#!/bin/sh
PCW_limit=75
PCA_limit=90
df_file=/tmp/df.out

echo -e "\n$(date)\n" > "$df_file"

#df -m | egrep -v '/dev/shm|cdrom|proc|Filesy' | # for fs without lvm

df -m | sed 's/^ *//;/^[0-9]/!d' | # for fs with lvm

while read MB_total MB_used MB_free used dev_mount
do
PC_used=$(echo $used | cut -d% -f1)
if [ $PC_used -ge $PCW_limit -a $PC_used -lt $PCA_limit ]
then
echo "Warning: $dev_mount used has exceded $used !" >> "$df_file"
elif [ $PC_used -ge $PCA_limit ]
then
echo "Alarm: $dev_mount used has exceded $used !" >> "$df_file"
fi
done

echo >> "$df_file"
[ -n "$df_file" -a -s "$df_file" ] && mail -s "Warming of disk!" licong@aa.com < "$df_file"
rm -rf "$df_file"

# End of script

八．整理文档用脚本实例
把/data目录下所有.swf文件移动到子目录下，子目录的名字取文件名的前2个字符；如果文件名只有1个字符，则目录名为2个重叠的该字符。
#!/bin/sh
cd /data
ls | grep '.swf' > filelist

while read filename
do
mkdir -p ${filename:0:2}
mv ${filename} ${filename:0:2}
done < filelist

ls -1 | awk -F'.' '{
if (length($1)==1)
{
if (-d "$1$1")
{
system("mv "$0"/* "$1$1)
system("rm -rf lib/en/"$0)
}
else
{system("mv "$0" "$1$1)}
}
}'

# End of script

#定义LOG文件名
LOGFILE=/home/tsptgz/tsptapp/log/fsgwkgetxf.log
echo $1 ftp 开始 >>$LOGFILE

ftp -n -i 22.0.50.1 <<+
user username password
cd /home/card/data/fs_gwk
lcd /home/tsptgz/tsptapp/acctbook/fsgwk/bankout/fsgwkFirst
get $1
+

if [ -s /home/tsptgz/tsptapp/acctbook/fsgwk/bankout/fsgwkFirst/$1 ]; then
echo "文件"+/home/tsptgz/tsptapp/acctbook/fsgwk/bankout/fsgwkFirst/$1+"存在" >>$LOGFILE
else
echo "文件"+/home/tsptgz/tsptapp/acctbook/fsgwk/bankout/fsgwkFirst/$1+"不存在" >>$LOGFILE
exit 101;
fi本文出自 “乐成的技术笔记” 博客，请务必保留此出处http://yueyuanyuan.blog.51cto.com/1342062/357144