dialog for getting Started with Windows programming

Dialog: Ability to dynamically generate a text window, and this window supports numerous window elements.

Dialog: Command

Window elements:

text box

Radio Box

check box

Progress bar

The form that dialog can provide to us, after the selection is completed (after hitting enter), the relevant information is not output to the standard output, but output to the error output

# yum-y Install dialog# Dialog--print-maxsize #这个只是自己的值, for personal size may not be the same, so later set as far as possible do not set the window too large maxsize:35, 134# dialog--b Acktitle "First window"--title "Create User"--yesno "HostName." 10 30

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After the option is pressed to enter

# echo $?0

If you press ENTER after the no option

# echo $?1# dialog--backtitle "First window"--title "Create User"--inputbox "HostName." After #加上 the--inputbox option, you can enter the information

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Not yet press ENTER

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# hostname= ' dialog--stdout--backtitle "First Window"--title "Create User"--inputbox "Hostname." 10 30 '

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This time, it's not in the back.

# echo $Hostname Hostname

Note: First, all outputs are directed to standard output (--stdout), and a variable is used to get the execution result of the command. In this case, we are able to call in the script

How to use dialog in scripts

Example: Creating a User

# VIM adduser.sh#!/bin/bash#username= ' dialog--stdout--backtitle "Add a user."--title "Username"--inputbox "please Inpu T a username: "Ten" retval=$?if [$RETVAL-eq 0-a-n $Username]; Then #判定 $? If its value is equal to 0 and the user name is not empty Useradd $Username echo $Username | passwd--stdin $Usernamefi # bash-n adduser.sh# bash adduser.sh

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# vim Adduser.shif [$RETVAL-eq 0-a-N "$Username"]; Then #把 $Username enclose it in quotation marks.

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In order not to display this information, and if the user exists, what should I do? The user is there, and you can't create a user as soon as you come up.

# Vim Adduser.sh

If [$RETVAL-eq 0-a-N "$Username"] &&! ID $Username &>/dev/null; Then

# bash adduser.sh

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Without any information to return, it should be successful. However, it is not known whether the creation was successful or because the user did not create the success, then change

# vim adduser.sh #!/bin/bash#username= ' dialog --stdout --backtitle  ' Add a  user. "  --title  "Username"  --inputbox  "please input a username: "  10  30 ' retval=$?if [  $RETVAL  -eq 0 -a -n  "$Username"  ]; then            if ! id  $Username  & > /dev/null; then                 useradd  $Username                  echo  $Username  | passwd --stdin  $Username  & > /dev/null                 dialog --backtitle  "Add a user."  --title  "Add a user."  --msgbox  "Add user  $Username  finished. "  10 30        else                dialog --backtitle  "Add a user."  --title  "Add a user."  --msgbox  "$Username  is already created."  10 30        fifi# bash adduser.sh

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Now to implement the input account, password

# Vim Adduser.sh

#!/bin/bash

#

Username= ' dialog--stdout--backtitle "Add a user."--title "Username"--inputbox "Please input a Username:" 10 30 "

Retval=$?

If [$RETVAL-eq 0-a-N "$Username"]; Then #判定 $? If the value is equal to 0 and the user name is not empty and the user does not exist on the current host

if! ID $Username &>/dev/null; Then

Useradd $Username

pass= ' dialog--stdout--backtitle "Password for $Username"--title "Passward"--passwordbox "Please enter the Password:" 10 30 '

echo $Pass | passwd--stdin $Username &>/dev/null

Dialog--backtitle "Add a user."--title "Add a user."--msgbox "Add user $Username finished." 10 30

Else

Dialog--backtitle "Add a user."--title "Add a user."--msgbox "$Username is already created." 10 30

Fi

Fi

# bash-n Adduser.sh

# bash adduser.sh

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No information is displayed when you enter a password

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If you want users to display the * number when they enter a password

# Vim adduser.sh pass= ' dialog--stdout--backtitle "Password for $Username"--title "Passward"--insecure--passwordbox "P Lease Enter the password: "Ten ' #加入了--insecure options # Bash adduser.sh

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Now it shows the * number.

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What to do if the user does not give the password

# Vim Adduser.sh

# dialog--title "Cal"--calendar "Canlendar" 6 45 8 4 2015

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# dialog--title "Checklist"--checklist "yourself" 2 h hight no W width yes

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# Vim backup.sh#!/bin/bash#dir= ('/etc/httpd '/etc/pam.d '/etc/vsftpd ') source= ' dialog--stdout--title ' backup '-- Checklist "Choose the dir want to Backup:" 3 0/etc/httpd 0 1/ETC/PAM.D 1 2/etc/vsftpd 0 ' echo $SourceSource = ' echo $Source | Tr-d ' "' for I in $Source; Do echo ${dir[$I]}done# bash backup.sh

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are displayed

 "0"   "2"/etc/httpd/etc/vsftpd# vim showusage.sh#!/bin/bash #ShowItem = ' dialog --stdout --title  ' show usages " --menu " choose the  usage you want:  " 12 35 6 1 " Show disk usages " 2 " Show physical memory usages " 3 " Show swap usages " 4 " quit "case   $ShowItem  in "1")         df -lh;; " 2 ")         free -m | grep " ^me ";;" 3 ")         free -m | grep " ^SW ";;" 4 ")         exit;; Esac# bash showusage.sh 

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filesystem                 size  used avail use% mounted on/dev/sda2                    48g   23g   24g  50% /tmpfs                      1.9G    21M  1.9G   2% /dev/shm/dev/sda1                  190M   51M  129M   29% /boot/dev/mapper/myvg-mydata   9.8G   54M  9.2G    1% /mydata# bash showusage.sh 

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mem:3776 2483 1292 144 661 575# Bash showusage.sh

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swap:9999 182 9817# Vim gauge.sh#!/bin/bash# (for Percent in {1..100};d o echo "XXX" Ech O "Percent: ${percent}%" echo "XXX" echo $Percent sleep 0.2done) | Dialog--clear--gauge "gauge" 8 0# bash gauge.sh

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# dialog--title "Add a user"--form "please input the infomation of new User:" 4 > "Username:" 1 1 "" 1 15 15 0 > "Full Name:" 2 1 "" 2 0 > "Home Dir:" 3 1 "" 3 "0 >" Shell: "4 1" "4 15 15 0

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This article is from the "three elder brother" blog, please be sure to keep this source http://523958392.blog.51cto.com/9871195/1631380

dialog for getting Started with Windows programming