2016-05-23

gawk进阶/gawk函数库

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+function myprint()
+{
+	printf "%-16s - %s", $1, $4
+}
+
+function myrand(limit)
+{
+	return int(limit * rand())
+}
+

gawk进阶/gawk脚本

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+BEGIN{FS="\n"; RS=""}
+{
+	myprint()
+}

gawk进阶/new

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+for (( i=1; i<=4; i++ ))
+do
+	touch $i.sh
+	chmod 764 $i.sh
+	echo "#!/bin/bash" > $i.sh
+done

gawk进阶/script

@@ -0,0 +1,2 @@
+BEGIN{FS=","; print n}
+{print $n}

gawk进阶/test

@@ -0,0 +1,4 @@
+10
+5
+123
+50

gawk进阶/使用变量.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+#使用内建变量
+
+gawk 'BEGIN {testing="This is a test";  print testing; testing=45;  print testing}'
+
+#处理数字值
+
+gawk 'BEGIN{x=4; x= x*2+3; printx}'
+
+#处理数组
+gawk 'BEGIN{capital["Ill"] = "SprintField"; print capital["Ill"]}'
+
+#遍历数组变量
+gawk 'BEGIN{
+var["a"] = 1
+var["g"] = 2
+var["m"] = 3
+for( test in var)
+{
+	print "Index:",test,"- Value:",var[test]
+}
+}'
+
+print "------"
+
+#删除数组变量
+gawk 'BEGIN{
+var["a"] = 1
+var["g"] = 2
+for (test in var)
+{
+	print "Index:",test," - Value:", var[test]
+}
+delete var["g"]
+
+print "----"
+
+for (test in var)
+{
+	print "Index;",test," - Value:", var[test]
+}
+}'

gawk进阶/使用模式，机构化命令.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+#正则表达式
+
+gawk 'BEGIN{FS=","} 
+/11/{print $1}
+' test
+
+#if-else语句
+gawk '{
+if($1 > 20)
+{
+	x=$1*20
+	print x
+}
+else
+{
+	x=$1/2
+	print x
+}
+}' test
+
+#while 语句
+gawk '{
+total = 0
+i=1
+while(i<4)
+{
+	total+=$i
+	i++
+}
+avg = total/3
+print "Average:".avg
+}' test
+
+
+#do-while语句
+gawk '{
+total=0
+i=1
+do
+{
+	total += $i
+	i++
+}while(total < 150)
+print total }' test
+
+
+#for语句
+gawk '{
+total = 0
+for (i=1; i<4; i++)
+{
+	total+=$i
+}
+avg = total/3
+print "Average:".avg
+}' test

gawk进阶/自定义函数.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+#gawk 自定义函数
+
+gawk '
+function myprint()
+{
+	printf "%-16s - %s\n", $1, $4
+}
+BEGIN{FS="\n"; RS=""}
+{
+	myprint()
+}' test

gawk进阶/调用函数库和脚本.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+#使用函数库和gawk脚本
+
+gawk -f gawk函数库 -f gawk脚本 test

mysql数据库/向数据库中插入数据.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# send data to the the table in the MYSQL database
+
+MYSQL=`which mysql`
+
+if [ $# -ne 2 ]
+then
+	echo "Usage:mtest2 emplid lastname firstname salary"
+else
+	#脚本变量一定要用双引号，字符串变量使用单引号
+	statement=" insert into em_admin values(NULL, '$1', $2)"
+	$MYSQL emwjs -u test <<EOF
+	$statement
+EOF
+	if [ $? -eq 0 ]
+	then
+		echo Data successfully added
+	else
+		echo Problem adding data
+	fi
+fi

mysql数据库/格式化输出数据.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+#redirecting SQL output to a variable
+
+MYSQL=`which mysql`
+dbs=`$MYSQL emwjs -u test -Bse 'show tables;'`
+for db in $dbs
+do
+	echo $db
+done
+
+
+#使用xml输出数据
+$MYSQL emwjs -u test -X -e 'select * from em_admin'
+
+#使用table标签输出数据
+$MYSQL emwjs -u test -H -e 'select * from em_admin'
+

mysql数据库/连接数据库并发送命令.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+#连接数据库
+mysql=`which mysql
+`
+#发送单个命令
+$mysql emwjs -u test -e "show databases;"
+
+#发送多个命令
+$mysql emwjs -u test <<EOF
+show tables;
+select * from em_admin;
+EOF

sed进阶/保持空间.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+#h将模式空间保存到保持空间
+#H将模式空间附加到保持空间
+#g将保持空间复制到模式空间
+#G将保持空间保存到模式空间
+#x交换模式空间和保持空间的内容
+
+sed -n '/first/{
+h
+p
+n
+p
+g
+p
+}' test

sed进阶/删除指定的空白行和删除html标签.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+#多个空格只保留一个
+#sed '/./,/^$/!d' test
+
+#删除开头的空白行
+#sed '/./,$!d' test
+
+#删除结尾的空白行
+sed '{
+:start
+/^\n*$/{$d; N; b start}
+}' test
+
+#删除html标签
+#有问题
+#s/<.*>//g
+
+#sed 's/<[^>]*>//g' test1
+
+#sed 's/<[^>]*>//g;/^$/d' test1

sed进阶/在脚本中使用sed.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+# shell wrapper for sed editor script to reverse lines
+
+sed -n '{
+1!G
+h
+$p
+}' $1

sed进阶/排除命令.sh

@@ -0,0 +1,8 @@
+!/bin/bash
+
+#排除命令，使本来起作用的命令不起作用
+
+sed -n '/heade/!p' test
+
+#反转文本文件
+sed -n '{1!G ; h; $p}' test

sed进阶/模式替代.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+#and符号，代表替换命令中的匹配模式，不管预定义模式是什么文本，都可以用and符号替换，and符号会提取匹配替换命令中指定替换模式中的所有字符串
+echo "The cat sleeps in his hat" | sed 's/.at/"&"/g'
+
+#替换单独的单词
+echo "The System Administrator manual" | sed 's/\(System\) Administrator/\1 user/'
+
+#在长数字中插入逗号
+echo "1234567" | sed '{:start; s/\(.*[0-9]\)\([0-9]\{3\}\)/\1,\2/; t start}'
+

sed进阶/测试.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+#测试，如果测试成功，如果没有标签，sed会跳转到结尾，如果有标签，就跳转到标签，如果测试失败，则不会跳转
+sed -n '{s/first/matched/; t; s/This is the/No match on/}' test

sed进阶/给文件中的行编号.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+sed '=' test | sed 'N; s/\n/ /'

sed进阶/跳转.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+#跳转到指定脚本
+sed '{/first/b jump1; s/This is the/No jump on/; :jump1; s/This is the/Jump here on/}' test
+
+#跳转到开头,删除每一个逗号，并保证删除最后一个逗号之后，跳出循环
+sed -n '{:start; s/,//1p; /,/b start}' test

sed进阶/输出末尾指定行数的数据.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+#输出末尾10行数据
+
+sed '{
+:start
+$q
+N
+11,$D
+b start
+}' /etc/passwd

sed进阶/重定向sed输出.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# add commas to numbers in factorial answer
+
+factorial=1
+counter=1
+number=$1
+
+while [ $counter -le $number ]
+do
+	factorial=$[ $factorial * $counter ]
+	counter=$[ $counter + 1 ]
+done
+
+result=`echo $factorial | sed '{
+:start
+s/\(.*[0-9]\)\([0-9]\{3\}\)/\1,\2/
+t start
+}'`
+
+echo "The result is $result"

shell脚本编程进阶/创建捕捉脚本.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Capture_Stats - Gather System Performance Statistics
+#
+#########################################################
+#
+# Set Script Variables
+#
+REPORT_FILE=/home/tiandi/Documents/capstats.csv
+DATE=`date +%m/%d/%y`
+TIME=`date +%k:%M:%S`
+#
+############################################################
+#
+USERS=`uptime | sed 's/user.*$//' | gawk '{print $NF}'`
+LOAD=`uptime | gawk '{print $NF}'`
+#
+FREE=`vmstat 1 2 | sed -n '/[0-9]/p' | sed -n '2p' | gawk '{print $4}'`
+IDLE=`vmstat 1 2 | sed -n '/[0-9]/p' | sed -n '2p' | gawk '{print $15}'`
+#
+##########################################
+#
+echo "$DATE,$TIME,$USERS,$LOAD,$FREE,$IDLE" >> $REPORT_FILE
+#

shell脚本编程进阶/查看uptime获取在线用户数.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+#
+uptime | sed 's/user.*$//' | gawk '{print $NF}'

shell脚本编程进阶/查看僵尸进程.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+#查看僵尸进程
+ps -al | gawk '{print $2,$4}' | grep Z

shell脚本编程进阶/查看内存使用百分比.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+#查看内存使用百分比
+free | sed -n '2p' | gawk 'x = int(( $3 / $2 ) * 100) {print x}' | sed 's/$/%/'

shell脚本编程进阶/查看磁盘使用百分比.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+#查看磁盘实用百分比
+df -h /dev/sda1 | sed -n '/% \//p' | gawk '{ print $5 }'

shell脚本编程进阶/生成报告脚本-基于创建捕捉脚本.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+#
+# Report_Stats - Generates Rpt from Captured Perf Stats
+#
+############################################################
+# 
+# Set Script Variables
+#
+REPORT_FILE=/home/tiandi/Documents/capstats.csv
+TEMP_FILE=/home/tiandi/Documents/capstats.html
+#
+DATE=`date +%m/%d/%y`
+#
+MAIL=`which mutt`
+MAIL_TO=tiandi
+#
+###############################################################3
+#
+# Create Report Header
+#
+echo "<html><body><h2>Report for $DATE</h2>" > $TEMP_FILE
+echo "<table border=\"1\">" >> $TEMP_FILE
+echo "<tr><td>Date</td><td>Time</td><td>Users</td>" >> $TEMP_FILE
+echo "<td>Load</td><td>Free Memory</td><td>%CPU Idle</td></tr>" >> $TEMP_FILE
+#
+###############################################################
+#
+# Place Performance Stats in Report
+#
+cat $REPORT_FILE | gawk -F, '{
+printf "<tr><td>%s</td><td>%s</td><td>%s</td>", $1, $2, $3;
+printf "<td>%s</td><td>%s</td><td>%s</td>\n</tr>\n", $4, $5, $6;
+}' >> $TEMP_FILE
+#
+echo "</table></body></html>" >> $TEMP_FILE
+#
+################################################################
+#
+# Mail Performance Report & Clean up
+#
+#$MAIL -a $TEMP_FILE -s "Performance Report $DATE"
+#-- $MAIL_TO < /dev/null
+#
+#rm -r $TEMP_FILE
+#

shell脚本编程进阶/系统快照报告.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+#
+# Snapshot_Stats - produces a report for system stats
+#
+##############################################
+#
+# Set Script Variables
+#
+DATE=`date +%m%d%y`
+DISKS_TO_MONITOR="/dev/sda1"
+MAIL=`which mutt`
+MAIL_TO=tiandi
+REPORT=/home/tiandi/Documents/Snapshot_Stats_$DATE.rpt
+#
+####################################################
+#
+# Create Report File
+#
+exec 3>&1             # Save file descriptor
+#
+exec 1> $REPORT       # direct output to rpt file
+#
+###################################################
+#
+echo
+echo -e "\t\tDaily System Report"
+echo
+#
+###################################################
+# Date Stamp the Report
+#
+echo -e "Today is" `date +%m%d%y`
+echo
+#
+##################################################
+#
+#1) Gather System Uptime Statistics
+#
+echo -e "System has been \c"
+uptime | sed -n '/,/s/,/ /gp' | gawk '{if($4 == "days" || $4 == "day") {print $2,$3,$4,$5} else {print $2,$3}}'
+#
+#################################################
+#
+#2) Gather Disk Usage Statistics
+#
+echo
+for DISK in $DISK_TO_MONITOR                 # loop to check disk space
+do
+	echo -e "$DISK usage: \c"
+	df -h $DISK | sed -n '/% \//p' | gawk '{ print $5 }'
+done
+#
+##################################################################
+#
+#3) Gather Memory Usage Statstics
+#
+echo
+echo -e "Memory Usage: \c"
+#
+free | sed -n '2p' | gawk 'x = int(($3 / $2) * 100) {print x}' | sed 's/$/%/'
+#
+###############################################################
+#
+#4) Gather Number of Zombie Processes
+#
+echo
+ZOMBIE_CHECK=`ps -al | gawk '{print $2,$4}' | grep Z`
+#
+if [ "$ZOMBIE_CHECK" = "" ]
+then
+	echo "No Zombie Process on System at this Time"
+else
+	echo "Current System Zombie Processes"
+	ps -al | gawk '{print $2,$4}' | grep Z
+fi
+echo
+#
+#####################################################################
+#
+# Restore File Descriptor & Mail Report
+#
+exec 1>&3				# Restore output to STDOUT
+#
+#$MAIL -a $REPORT -s "System Sstatistics Report for $DATE"
+#-- $MAIL_TO < /dev/null
+#
+###############################################################
+#
+# Clean up
+#
+#rm -f $REPORT
+#

shell脚本编程进阶/问题跟踪数据库/Update_Problem.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+#
+# Update_Problem - updates problem record in database
+#
+############################################################
+#
+# Determine sql location & set variable
+#
+MYSQL=`which mysql`" Problem_Trek -u root"
+#
+##############################################################
+#
+# Obtain Record Id
+#
+if [ $# -eq 0 ]			# Check if id number was passed
+then			# If not passed ask for it
+#
+# Check if any unfinished records exist.
+	RECORDS_EXIST=`$MYSQL -Bse 'SELECT id_number FROM problem_logger where fixed_date="0000-00-00" OR prob_solutions=""'`
+#
+	if [ "$RECORDS_EXIST" != "" ]
+	then	
+		echo
+		echo "The following record(s) need updating..."
+		$MYSQL <<EOF
+		SELECT id_number, report_date, prob_symptoms FROM problem_logger WHERE fixed_date="0000-00-00" OR prob_solutions=""\G
+EOF
+	fi
+#
+	echo
+	echo "What is the ID number for the"
+	echo -e "problem you want to update?: \c"
+	read ANSWER
+	ID_NUMBER=$ANSWER
+else
+	ID_NUMBER=$1
+fi
+#
+##########################################################
+#
+# Obtain Solution (aka Fixed) Date
+#
+echo
+echo -e "Was Problem solved today? (y/n) \c"
+read ANSWER
+#
+case $ANSWER in
+y|Y|YES|yes|Yes|yEs|yeS|YEs|yES)
+#
+	FIXED_DATE=`date +%Y%m%d`
+;;
+*)
+# if answer is anything but "yes", ask for date
+	echo
+	echo -e "What was the date of resolution? [YYYYMMDD] \c"
+	read ANSWER
+#
+	FIXED_DATE=$ANSWER
+;;
+esac
+#
+########################################################
+#
+# Acquire problem solution
+#
+echo
+echo -e "Birefly describe the problem solution: \c"
+#
+read ANSWER
+PROB_SOLUTIONS=$ANSWER
+#
+########################################################
+# 
+# Update problem record
+#
+echo
+echo "Problem record updated as follows:"
+echo
+$MYSQL <<EOF
+UPDATE problem_logger SET prob_solutions="$PROB_SOLUTIONS", fixed_date=$FIXED_DATE where id_number=$ID_NUMBER;
+SELECT * FROM problem_logger WHERE id_number=$ID_NUMBER\G
+EOF

shell脚本编程进阶/问题跟踪数据库/new

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+for (( i=1; i<=4; i++ ))
+do
+	touch $i.sh
+	chmod 764 $i.sh
+	echo "#!/bin/bash" > $i.sh
+done

shell脚本编程进阶/问题跟踪数据库/查找问题.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# Find_Problem - finds problem records using keywords
+#
+###########################################################
+#
+# Determine sql location & set variable
+#
+MYSQL=`which mysql`" Problem_Trek -u root"
+#
+##########################################################
+#
+# Obtain Keyword(s)
+#
+if [ -n "$1" ]      # Check if a keyword was passed
+then				# Grab all the passed keywords
+#
+	KEYWORDS=$@		# Grab all the params as separate words, same string
+#
+else				# Keyword(s) not passed, Ask for them
+	echo 
+	echo "What keywords would you like to search for?"
+	echo -e "Please separate words by a space: \c"
+	read ANSWER
+	KEYWORDS=$ANSWER
+fi
+#
+#######################################################
+#
+# Find problem record
+#
+echo
+echo "The following was found using keywords: $KEYWORDS"
+echo
+#
+KEYWORDS=`echo $KEYWORDS | sed 's/ /|/g'`
+#
+$MYSQL <<EOF
+SELECT * FROM problem_logger WHERE prob_symptoms REGEXP '($KEYWORDS)' OR prob_solutions REGEXP '($KEYWORDS)'\G
+EOF
+#

shell脚本编程进阶/问题跟踪数据库/记录问题.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# Record_Problem - records system problems in database
+#
+###########################################################
+#
+# Determine mysql location & put into variable
+#
+MYSQL=`which mysql`" Problem_Trek -u root"
+#
+###########################################################
+#
+# Create Record Id & Report_Date
+#
+#ID_NUMBER=`date +%y%m%d%H%M`
+#
+REPORT_DATE=`date +%y%m%d`
+#
+############################################################
+#
+# Acquire information to put into table
+#
+echo
+echo -e "Birefly describe the problem & its symptoms: \c"
+#
+read ANSWER
+PROB_SYMPTOMS=$ANSWER
+#
+# Set Fixed Date & Problem Solution to null for now
+#
+FIXED_DATE=0
+PROB_SOLUTIONS=""
+#
+#############################################################
+#
+# Insert acquired information into table
+#
+echo 
+echo "Problem recorded as follows:"
+echo
+id=$($MYSQL -e "INSERT INTO problem_logger VALUES (null,$REPORT_DATE,$FIXED_DATE,'$PROB_SYMPTOMS','$PROB_SOLUTIONS');SELECT LAST_INSERT_ID() id")
+id=`echo $id | gawk '{print $2}'`
+$MYSQL <<EOF
+SELECT * FROM problem_logger where id_number=$id\G
+EOF
+#
+#############################################################
+#
+# Check if want to enter a solution now
+#
+echo 
+echo -e "Do you have a solution yet?(y/n) \c"
+read ANSWER
+#
+case $ANSWER in
+y|Y|YES|yes|Yes|yEs|yeS|YEs|yES)
+	./Update_Problem.sh $id
+#
+;;
+*)
+# if answer is anything but yes, just exit script
+;;
+esac
+#
+############################################################

脚本实用工具/Daily_Archive.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+#
+# Daily_Archive - Archive designated files & directories
+######################################################
+#
+# Gather Current Date
+#
+DATE=`date +%y%m%d`
+#
+# Set Archive File Name
+#
+FILE=archive$DATE.tar.gz
+#
+# Set Configuration and Destination File
+# 
+CONFIG_FILE=/home/tiandi/archive/Files_To_Backup
+DESTINATION=/home/tiandi/archive/$FILE
+#
+##################### Main Script ###############
+#
+# Check Backup Config file exists
+#
+if [ -f $CONFIG_FILE ]	#Make sure the config file still exists
+then
+	echo 
+else
+	echo 
+	echo "$CONFIG_FILE does not exist."
+	echo "Backup not completed due to missing Configuration file"
+	echo 
+	exit
+fi
+#
+# Build the names of all the files to backup
+#
+FILE_NO=1				# Start on Line 1 of Config file.
+exec < $CONFIG_FILE		# Redirect Std Input to name of Config File
+#
+read FILE_NAME			# Read 1st record
+#
+while [ $? -eq 0 ]
+do
+	# Make sure the file or directory exists.
+	if [ -f $FILE_NAME -o -d $FILE_NAME ]
+	then
+		# If file exists, add its name to the lists
+		FILE_LIST="$FILE_LIST $FILE_NAME"
+	else
+		# If file doesn't exist, issue warning
+		echo 
+		echo "$FILE_NAME, does not exist."
+		echo "Obviously, I will not include it in this archive."
+		echo "It is listed on line $FILE_NO of the config file."
+		echo "Continuing to build archive file."
+		echo
+	fi
+#
+	FILE_NO=$[ $FILE_NO + 1 ]	# Increase Line/File number by one
+	read FILE_NAME				# Read next record.
+done
+###########################################################
+# 
+# Backup the files and Compress Archive
+#
+tar -czf $DESTINATION $FILE_LIST 2> /dev/null
+#

脚本实用工具/Hourly_Archive.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+#
+# Hourly_Archive - Every hour create an archive
+######################################################
+#
+# Set Configuration and Destination File
+# 
+CONFIG_FILE=/home/tiandi/archive/Files_To_Backup
+#
+# Gather Current Date,Month & Time
+#
+DAY=`date +%d`
+MONTH=`date +%m`
+TIME=`date +%k%M`
+#
+# Set Base Archive Destination Location
+#
+BASEDEST=/home/tiandi/archive/hourly
+#
+# Create Archive Destination Directory
+mkdir -p $BASEDEST/$MONTH/$DAY
+#
+# Build Archive Destination File Name
+DESTINATION=$BASEDEST/$MONTH/$DAY/archive$TIME.tar.gz
+#
+##################### Main Script ###############
+#
+# Check Backup Config file exists
+#
+if [ -f $CONFIG_FILE ]	#Make sure the config file still exists
+then
+	echo 
+else
+	echo 
+	echo "$CONFIG_FILE does not exist."
+	echo "Backup not completed due to missing Configuration file"
+	echo 
+	exit
+fi
+#
+# Build the names of all the files to backup
+#
+FILE_NO=1				# Start on Line 1 of Config file.
+exec < $CONFIG_FILE		# Redirect Std Input to name of Config File
+#
+read FILE_NAME			# Read 1st record
+#
+while [ $? -eq 0 ]
+do
+	# Make sure the file or directory exists.
+	if [ -f $FILE_NAME -o -d $FILE_NAME ]
+	then
+		# If file exists, add its name to the lists
+		FILE_LIST="$FILE_LIST $FILE_NAME"
+	else
+		# If file doesn't exist, issue warning
+		echo 
+		echo "$FILE_NAME, does not exist."
+		echo "Obviously, I will not include it in this archive."
+		echo "It is listed on line $FILE_NO of the config file."
+		echo "Continuing to build archive file."
+		echo
+	fi
+#
+	FILE_NO=$[ $FILE_NO + 1 ]	# Increase Line/File number by one
+	read FILE_NAME				# Read next record.
+done
+###########################################################
+# 
+# Backup the files and Compress Archive
+#
+tar -czf $DESTINATION $FILE_LIST 2> /dev/null
+#

脚本实用工具/删除用户脚本.sh

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+#!/bin/bash
+#
+# Delete_User - Automates the 4 steps to remove an account
+#
+#################################################################
+# 
+# Define Functions
+#
+#################################################################
+function get_answer {
+#
+	unset ANSWER
+	ASK_COUNT=0
+#
+	while [ -z "$ANSWER" ] # while no answer is given, keep asking
+	do
+		ASK_COUNT=$[ $ASK_COUNT + 1 ]
+#
+		case $ASK_COUNT in			# If user gives no answer in time allowed
+		2)
+			echo 
+			echo "Please answer the question."
+			echo
+		;;
+		3)
+			echo 
+			echo "One last try... please answer the question."
+			echo
+		;;
+		4)
+			echo 
+			echo "Since you refuse to answer the question..."
+			echo "exiting program."
+			echo
+			#
+			exit
+		;;
+		esac
+#
+		echo
+#	
+		if [ -n "$LINE2" ]
+		then
+			echo $LINE1			# Print 2 lines
+			echo -e $LINE2" \c"
+		else					# Print 1 line
+			echo -e $LINE1" \c"
+		fi
+#
+# Allow 60 seconds to answer before time-out
+		read -t 60 ANSWER
+	done
+#
+# Do a little variable clean-up
+#
+	unset LINE1
+	unset LINE2
+#
+}    #end of get_answer function
+#
+#################################################################
+function process_answer {
+#
+	case $ANSWER in
+	y|Y|YES|yes|yEs|yeS|YEs|yES)
+	# If user answers "yes".do nothing.
+	;;
+	*)
+	# If user answers anything but "yes", exit script
+		echo
+		echo $EXIT_LINE1
+		echo $EXIT_LINE2
+		echo
+		exit
+	;;
+	esac
+	#
+	# Do a little variable clean-up
+	unset EXIT_LINE1
+	unset EXIT_LINE2
+#
+} #End of process_answer function
+#
+################################################################
+#
+# End of Function Definitions
+#
+############### Main Script #################################
+#
+# Get name of User Account to check
+#
+echo "Step #1 - Determine User Account name to delete "
+echo
+LINE1="Please enter the username of the user"
+LINE2="account you wish to delete from system:"
+get_answer
+USER_ACCOUNT=$ANSWER
+#
+# Double check with script user that this is the correct User Account
+#
+LINE1="Is $USER_ACCOUNT the user account"
+LINE2="you wish to delete from the system?[ y/n ]:"
+get_answer
+#
+############################################################
+#
+# Check that USER_ACCOUNT is really an account on the system
+#
+USER_ACCOUNT_RECORD=$(cat /etc/passwd | grep -w $USER_ACCOUNT)
+#
+if [ $? -eq 1 ]			# If the account is not found, exit script
+then
+	echo 
+	echo "Account, $USER_ACCOUNT, not found."
+	echo "Leaving the script..."
+	echo
+	exit
+fi
+#
+echo
+echo "I found this record:"
+echo $USER_ACCOUNT_RECORD
+echo
+#
+LINE1="Is this the correct User Account?[y/n]:"
+get_answer
+#
+#
+# Call process_answer function:
+#	if user answers anything but "yes", exit script
+#
+EXIT_LINE1="Because the account, $USER_ACCOUNT, is not "
+EXIT_LINE2="the one you wish to delete, we are leaving the script..."
+process_anser
+#
+##############################################################
+#
+# Search for any running processes that belong to the User Account
+#
+echo
+echo "Step #2 - Find process on system belonging to user account"
+echo
+echo "$USER_ACCOUNT has the following processes running: "
+echo
+#
+ps -u $USER_ACCOUNT      #List the processes running
+#
+case $? in
+1)			# No processes running for this User Account
+	#
+	echo "There are no processes for this account currently running."
+	echo
+;;
+0)	# Processes running for this User Account.
+	# Ask Script User if wants us to kill the processes.
+	#
+	unset ANSWER			# I think this line is not needed
+	LINE1="Would you like me to kill the process(es)? [y/n]:"
+	get_answer
+	#
+	case $ANSWER in
+	y|Y|YES|yes|Yes|yEs|yeS|YEs|yES)    # if user answer "yes",
+		#kill User Account processes
+		#
+		echo 
+		#
+		# Clean-up temp file upon signals
+		#
+		trap "rm $USER_ACCOUNT_Running_Process.rpt" SIGTERM SIGINT SIGQUIT
+		#
+		# List user processes running
+		ps -u $USER_ACCOUNT > $USER_ACCOUNT_Running_Process.rpt
+		#
+		exec < $USER_ACCOUNT_Running_Process.rpt		# Make report Std Input
+		#
+		read USER_PROCESS_REC				# First record will be blank
+		read USER_PROCESS_REC
+		#
+		while [ $? -eq 0 ]
+		do
+			# obtain PID
+			USER_PID=$(echo $USER_PROCESS_REC | cut -d " " -f1 )
+			kill -9 $USER_PID
+			echo "Killed process $USER_PID"
+			read USER_PROCESS_REC
+		done
+		#
+		echo
+		#
+		rm $USER_ACCOUNT_Running_Process.rpt			# Remove temp report
+	;;
+	*) # If user answers anything but "yes", do not kill.
+		echo
+		echo "Will not kill the process(es)."
+		echo
+	;;
+	esac
+;;
+esac
+###################################################################################
+#
+# Create a report of all files owned by User Account
+#
+echo
+echo "Step #3 - Find files on system belonging to user account"
+echo
+echo "Creating a report of all files owned by $USER_ACCOUNT."
+echo
+echo "It is recommended that you backup/archive these files."
+echo "and then do one of two things:"
+echo " 1) Delete the files"
+echo " 2) Change the files' ownership to a current user account."
+echo
+echo "Please wait. This may take a while..."
+#
+REPORT_DATE=`date +%y%m%d`
+REPORT_FILE=$USER_ACCOUNT"_Files_"$REPORT_DATE".rpt"
+#
+find / -user $USER_ACCOUNT > $REPORT_FILE 2>/dev/null
+#
+echo
+echo "Report is complete."
+echo "Name of report:	$REPORT_FILE"
+echo "Location of report:     `pwd`"
+echo
+################################################################
+#
+# Remove User Account
+echo
+echo "Step #4 - Remove user account"
+echo
+#
+LINE1="Do you wish to remove $USER_ACCOUNT's account from system? [y/n]:"
+get_answer
+#
+# Cass process_answer function:
+#	if user answers anything but "yes", exit script
+#
+EXIT_LINE1="Since you do not wish to remove the user account."
+EXIT_LINE2="$USER_ACCOUNT at this time, exiting the script..."
+process_answer
+#
+userdel $USER_ACCOUNT			# delete user account
+echo
+echo "User account, $USER_ACCOUNT, has been removed"
+echo
+#

脚本实用工具/查看磁盘目录使用情况.sh

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+#!/bin/bash
+#
+# Big_Users - find big disk space users in various directories
+#############################################################
+#Parameters for script
+#
+CHECK_DIRECTORIES="/var/log /home" #directories to check
+#
+######################### Main Script #######################
+#
+DATE=$(date '+%m%d%y')             #Date for report file
+#
+exec > disk_space_$DATE.rpt         #Make report file Std Output
+#
+echo "Top Ten Disk Space Usage"     #Report header for while report
+echo "for $CHECK_DIRECTORIES Directories"
+#
+for DIR_CHECK in $CHECK_DIRECTORIES       #loop to du directories
+do
+	echo ""
+	echo "The $DIR_CHECK Directory:"	#Title header for each directory
+#
+#	Creating a listing of top ten disk space users
+	du -S $DIR_CHECK 2>/dev/null |
+	sort -rn |
+	sed '{11,$D; =}' |
+	sed 'N; s/\n/ /' | 
+	gawk '{printf $1 ":" "\t" $2 "\t" $3 "\n"}'
+#
+done								#End of for loop for du directories
+#

自动化下载脚本.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+#download latest cURL file automatically
+
+curl -s -o /home/tiandi/curl
+http://curl.haxx.se/download/curl