2016-05-18

sed进阶/1.sh

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+#!/bin/bash

sed进阶/2.sh

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+#!/bin/bash

sed进阶/3.sh

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+#!/bin/bash

sed进阶/4.sh

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+#!/bin/bash

sed进阶/new

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

sed进阶/test

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+This is the header line
+This is the first data line
+This is the data line
+This is the second data line
+line This is the last line

初识sed和gawk/gawk.sh

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+#!/bin/bash
+
+BEGIN {
+print "The latest list of users and shells"
+print "Userid	Shell"
+print "------	-----"
+FS=":"
+}
+
+{
+print $1 "	" $7
+}
+
+END {
+print "This concludes the listing"
+}
+
+#执行gawk命令截取/etc/passwd输出
+#gawk -f gawk.sh /etc/passwd

初识sed和gawk/script

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+{ print $1 "'s home directory is " $6 }
+

初识sed和gawk/sed文件操作.sh

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+#!/bin/bash
+
+#向文件写入
+sed '1,2w test1' test1
+
+echo -e "next\n"
+
+#从文件读取
+sed '3r ./test' ./test
+
+echo -e "next\n"
+
+#从文件读取，并插入字符流
+sed '/lazy/r test' test
+
+#向数据流末尾添加数据
+sed '$r test' test
+
+echo -e "next1\n"
+
+sed '/lazy/ {
+r test
+d
+}' test

初识sed和gawk/sed编辑器基础.sh

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+#!/bin/bash
+#sed编辑器基础
+
+#替换标记
+sed 's/lazy/ht/' ./test
+
+echo -e "next\n"
+
+#可用的替换标记
+#1.数字 表明新闻本将替换第几处模式匹配的地方
+sed 's/lazy/ht/2' ./test
+#2.g 表明新文件将会替换所有已有文本出现的地方
+sed 's/lazy/ht/g' ./test
+#3.p 表明原来行的内容要打印出来,替换后的
+sed 's/lazy/ht/p' ./test
+#4.w file 将替换的结果写到文件中
+sed 's/lazy/ht/w test1' ./test
+
+echo -e "next\n"
+
+#替换字符
+sed 's/\/bin\/bash/\/bin\/csh/' /etc/passwd
+#或者
+sed 's!/bin/bash!/bin/csh!' /etc/passwd
+
+echo -e "next\n"
+
+#使用地址
+#1.数字方式的行寻址
+sed '2s/lazy/cat/' ./test
+sed '2,3s/lazy/cat/' ./test
+sed '2,$s/lazy/cat/' ./test
+#2.使用文本模式过滤器
+sed '/tiandi/s/bash/csh/' /etc/passwd
+
+echo -e "next\n"
+
+#组合命令
+sed '2{
+s/fox/elephant/
+s/dog/cat/
+}' test
+sed '2,${
+s/fox/elephant/
+s/dog/cat/
+}' test
+
+echo -e "next\n"
+
+#删除行
+sed '3d' ./test
+sed '2,$d' ./test
+sed '/number 1/d' ./test
+#删除两个文本模式来删除某个范围的行，第一个开启删除功能，第二个关闭删除功能
+sed '/1/,/3/d' ./test
+
+echo -e "next\n"
+
+#插入和附加文本
+sed '3i\
+This is an appended line.' ./test
+
+sed '$a\
+This is a new line of text.' ./test
+
+#修改行
+sed '3c\
+This a changed line of text.' ./test
+sed '/number 1/c\
+This a changed line of text.' ./test
+#替换两行文本
+#sed '2,3c\
+#This a changed line of text.' ./test
+
+#转换命令，处理单个字符
+#sed 'y/123/789/' ./test
+
+echo -e "next\n"
+
+#回顾打印
+# p 打印文本行
+# -n 禁止其他行，只打印包含匹配文本模式的行
+sed -n '/number 3/p' ./test
+
+#查看修改之前的行和修改之后的行
+#sed -n '/3/{
+#p
+#s/line/test/p
+#}' ./test
+
+echo -e "next\n"
+
+# 打印行号
+sed '=' ./test
+
+#打印指定的行和行号
+#sed -n '/lazy/{
+#=
+#p
+#}' ./test
+
+#列出行 打印数据流中的文本和不可打印的ASCII字符，任何不可打印的字符都用它们的八进制值前加一个反斜线或标准C风格的命名法，比如用\t来代表制表符
+sed -n 'l' ./test
+

图形化桌面的脚本编程/使用msgbox部件.sh

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+#!/bin/bash
+
+dialog --title text --msgbox "This is a test" 10 20

图形化桌面的脚本编程/使用select命令.sh

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+#!/bin/bash
+# using select in the menu
+
+function diskspace {
+	clear 
+	df -k
+}
+
+function whoseon {
+	clear
+	who
+}
+
+function menusage {
+	clear
+	cat /proc/meminfo
+}
+
+PS3="Enter option:"
+select option in "Display disk space" "Display logged on users" "Display memory usage" "Exit program"
+do
+	case $option in
+	"Exit program")
+		break;;
+	"Display disk space")
+		diskspace;;
+	"Display logged on users")
+		whoseon;;
+	"Display memory usage")
+		menusage;;
+	*)
+		clear
+		echo "Sorry, wrong selection";;
+	esac
+done
+clear

图形化桌面的脚本编程/使用脚本菜单.sh

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+#!/bin/bash
+
+function menu {
+	clear
+	echo
+	echo -e "\t\tSys Admin Menu\n"
+	echo -e "\t1. Display disk space"
+	echo -e "\t2. Display logged on users"
+	echo -e "\t3. Display memory usage"
+	echo -e "\t0. Exit program\n\n"
+	echo -en "\t\tEnter option:"
+	read -n 1 option
+}
+
+function diskspace {
+	clear 
+	df -k
+}
+
+function whoseon {
+	clear
+	who
+}
+
+function menusage {
+	clear
+	cat /proc/meminfo
+}
+
+while [ 1 ]
+do
+	menu
+	case $option in
+	0) 
+		break;;
+	1) 
+		diskspace;;
+	2)
+		whoseon;;
+	3)
+		menusage;;
+	*)
+		clear
+		echo "Sorry, wrong selection";;
+	esac
+	echo -en "\n\n\t\tHit any key to continue"
+	read -n 1 line
+done
+clear

图形化桌面的脚本编程/在脚本中使用dialog命令.sh

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+#!/bin/bash
+
+# using dialog to create a menu
+
+temp=`mktemp -t test.XXXXXX`
+temp2=`mktemp -t test2.XXXXXX`
+
+function diskspace {
+	df -k > $temp
+	dialog --textbox $temp 20 60
+}
+
+function whoseon {
+	who > $temp
+	dialog --textbox $temp 20 50
+}
+
+function menusage {
+	cat /proc/meminfo > $temp
+	dialog --textbox $temp 20 50
+}
+
+while [ 1 ]
+do
+	dialog --menu "Sys Admin Menu" 20 30 10 1 "Display disk space" 2 "Display users" 3 "Display memory usage" 0 "Exit" 2> $temp2
+	if [ $? -eq 1 ]
+	then
+		break
+	fi
+
+	selection=`cat $temp2`
+
+	case $selection in
+	1)
+		diskspace;;
+	2)
+		whoseon;;
+	3)
+		menusage;;
+	0)
+		break;;
+	*)
+		dialog --msgbox "Sorry,invalid selection" 10 30
+	esac
+done
+rm -f $temp 2> /dev/null
+rm -f $temp2 2> /dev/null

正则表达式/目录文件计数.sh

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+#!/bin/bash
+
+# count number of files in your PATH
+
+mypath=`echo $PATH | sed 's/:/ /g'`
+count=0
+for directory in $mypath
+do
+	check=`ls $directory`
+	echo $check
+	for item in $check
+	do
+		count=$[ $count + 1 ]
+	done
+	echo "$directory - $count"
+	count=0
+done
+

正则表达式/邮件验证.sh

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+#!/bin/bash
+
+#验证邮件
+
+gawk --re-interval '/^([a-zA-Z0-9_\-\.\+]+)@([a-zA-Z0-9_\-\+]+)\.([a-zA-Z]{2,5})/{print $0}'
+
+