When we deal with a large local area network, we may need to check the availability of other machines in the network. By using shell scripting, we can easily find out and report which machines are alive on the network.
- [Instructor] In the previous video,…we looked at the ping command.…We'll now look at how to list all…the machines alive on a network.…In this video, we use two methods.…The first method uses ping,…and the second method uses fping.…We may need to check the availability…of other machines in the network.…A machine may not be alive in two conditions,…either it is not powered on,…or due to a problem in the network.…Shell scripting will help us report…which machines are alive on the network.…Let's see how to do it.…We'll be using ping and fping for this.…
Fping is easier to use the script…and has more features as compared to the ping command.…Usually we only shoot to your Linux distribution by default,…so you'll need to manually install…it using your package manager.…I'm installing it now, here.…Let's go through the script to find out all…the live machines on the network,…and alternate methods to find out the same.…The first method.…We can write our own script using the ping command…to query a list of IP addresses…and check whether they are alive or not in this way.…
Sarath Lakshman
Shantanu Tushar
Released
7/17/2017Note: This course was created by Packt Publishing. We are pleased to host this training in our library.
- Printing in the terminal
- Performing math in the Linux shell
- Getting and setting dates
- Working with functions and arguments
- Reading output
- Making comparisons
- Concatenating text
- Finding, editing, generating, and deleting files
- Running parallel processes
- Using regular expressions
- Downloading webpages
- Parsing data from a website
- Finding broken links
- Backing up and archiving
- Transferring files and data through the network
- Monitoring your Linux system
- Gathering data for system administration
Skill Level Intermediate
Duration
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1. Shell Something Out
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Printing in the terminal6m 4s
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Math with the shell3m 5s
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Visiting aliases2m 25s
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Debugging the script2m 46s
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Functions and arguments4m 31s
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Comparisons and tests6m 22s
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2. Have a Good Command
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Concatenating with cat5m 30s
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Finding files and file listing18m 46s
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Playing with xargs11m 41s
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Translating with tr6m 51s
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Checksum and verification4m 46s
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Splitting files and data4m 53s
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Automating interactive input4m 10s
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3. File In, File Out
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Generating files of any size4m 24s
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Making files immutable2m 13s
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Using loopback files6m 15s
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Printing the directory tree3m 18s
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4. Texting and Driving
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Using regular expressions9m 25s
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5. Tangled Web? Not at All
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Downloading from a web page5m 15s
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A primer on cURL7m 11s
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Image crawler and downloader3m 36s
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Web photo album generator1m 54s
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6. The Backup Plan
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Archiving with tar10m 33s
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Archiving with cpio2m 31s
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Compressing data with gzip5m 27s
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Faster archiving with pbzip23m 15s
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Backup snapshots with rsync6m 55s
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7. The Old-Boy Network
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Let us ping4m 53s
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Creating arbitrary sockets2m 45s
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8. Put on the Monitor's Cap
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Logging with syslogd2m 44s
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Monitoring disk activity1m 41s
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9. Administration Calls
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Gathering system information1m 57s
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Scheduling with cron7m 7s
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User administration script5m 16s
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Video: Listing all the machines alive on a network