online bash shell emulator

applications through the shell (that is, command-line mode), and let these applications invoke the kernel to run the required work。As long as the interface that can manipulate the application can be called the shellNarrow shell-time command-side software such as bash, a generalized shell that includes graphical interf

Shell scripts can have a very large impact when they run an exception. This article describes some of the techniques that make bash scripts robust. Using Set-u How many times did the script crash because there was no initialization of the variable? For me, many times.Chroot=$1...RM-RF $chroot/usr/share/docIf the above code does not run on the parameter, it will not just remove the document from the chroo

For the server, the online rate is very important, there are problems to be resolved in a timely manner, but the system administrator can not be kept in the computer next to the site through the script to monitor the problem in a timely manner through mail notify the administrator, if it is 139 mailbox can also be free mobile phone SMS notification.Note: Sending mail directly through the system is easy to intercept, and you can use mail to connect to

First, the script functionTo determine whether the IP is occupied, the ping rule is considered to be occupied and the results are output to ip_yes.txt and Ip_no.txt, respectively, by means of the ping command detection.Second, script writing#!/bin/bash#Check the network is onlineip_num=192.168.1.For i in ' SEQ 1 254 'DoPing-c 2 $ip _num$i >/dev/nullIf [$? = 0];thenecho "Echo $ip _num$i is yes"Echo $ip _num$i is yes >> ip_yes.txtElseecho "Echo $ip _num

in the script to find exactly.This script is suitable for the small and medium-sized machine room without monitoring platform patrol, the host running the script is not an online business Server. This script is also suitable for me just like the beginning of the shell novice practiced hand, using a relatively basic knowledge.The script reads as follows:#!/bin/bash