Linux from the command line - Using the Word Count (wc) command

Linux from the command line - Using the Word Count (wc) command

wc is a very simple program that is very handy and very powerful.
It allows you to count things. The obvious use is counting the words in an essay to make sure you've reached the assigned 5000 word minimum for example. But when combined with bash scripts, wc has a lot more diverse and powerful uses, especially when combined with pipes and redirects.

For example, if you want to know how many PCI devices are in your system, type:
lspci | wc -l

USB devices?
lsusb | wc -l


https://www.howtoforge.com/linux-wc-command-explained-for-beginners-6-examples/

Linux from the command line - touch your files with 'touch'

Linux from the command line - touch your files with 'touch'

https://www.howtoforge.com/tutorial/linux-touch-command/

Linux from the command line - Scheduling tasks for later with 'at'

Linux from the command line - Scheduling tasks for later with 'at'

Yesterday I posted about cron and crontab and using them to schedule tasks to run regularly. But what if you want to run a task once at a later time?
That's where 'at' comes in.


https://linuxconfig.org/how-to-schedule-tasks-using-at-command-on-linux

Linux for sysadmins - Using crontab

Linux for sysadmins - Using crontab

Automating repetitive tasks is a huge time saver and important skill for every Linux user, especially sysadmins. Crontab is where that gets done.
http://linuxtechlab.com/scheduling-important-jobs-crontab/

Linux from the command line - Searching Duck Duck Go from the command line

Linux from the command line - Searching Duck Duck Go from the command line

With Google getting more and more Orwellian and political, users are moving to Duck Duck Go for the privacy it provides. Here's how you can search it from the command line.
https://www.tecmint.com/search-duckduckgo-from-linux-terminal/#

Linux for sysadmins - How to tell if your Linux server has been compromised

Linux for sysadmins - How to tell if your Linux server has been compromised
https://bash-prompt.net/guides/server-hacked/

Linux Privacy - Surf anonymously with TOR

Linux Privacy - Surf anonymously with TOR


http://linuxtechlab.com/learn-install-tor-network-linux/

Linux Command Line - putting commands together

Linux Command Line - putting commands together

Here's an example to get you on the road to understanding the Linux Command Line's secret superpower. The ability to combine multiple commands to perform complex tasks in simple ways.

"Use the pipe Luke!"
https://www.cyberciti.biz/faq/linux-unix-find-tar-files-into-tarball-command/

Learning Linux - REGEX, the core Linux skill you need to build all your other skills on

Learning Linux - REGEX, the core Linux skill you need to build all your other skills on
http://linuxtechlab.com/bash-scripting-learn-use-regex-basics/

Linux administration - controlling access with ACL's

Linux administration - controlling access with ACL's
https://www.2daygeek.com/how-to-configure-access-control-lists-acls-setfacl-getfacl-linux/

Using pdfgrep to search PDF files on Linux

Using pdfgrep to search PDF files on Linux

This is a really handy tool to let you search one or a directory full of PDF files.

This is Debian oriented, but a great tool for all Linux versions.


For OpenSUSE users, just add the Publishing repo then add the package.
eg. do the following from a root shell

zypper ar https://download.opensuse.org/repositories/Publishing/openSUSE_Leap_42.3/Publishing.repo

zypper in pdfgrep

You might also want to add pdftk with
zypper in pdftk

https://www.maketecheasier.com/search-pdf-files-pdfgrep/

File compression on Linux - way beyond just Winzip

File compression on Linux - way beyond just Winzip

https://www.networkworld.com/article/3240938/linux/how-to-squeeze-the-most-out-of-linux-file-compression.html

Linux from the Command Line - finding text in files and directories with grep

Linux from the Command Line - finding text in files and directories with grep

grep is a core tool in Linux and one every user should get to know.
https://www.tecmint.com/find-a-specific-string-or-word-in-files-and-directoires/#

Linux from the Command Line - using ncat

Linux from the Command Line - using ncat

ncat is a highly useful tool for pulling information from network streams.
https://www.linuxtechi.com/nc-ncat-command-examples-linux-systems/

Linux for sysadmins - Using sudo

Linux for sysadmins - Using sudo

This is the way to use sudo to delegate the rights to run privileged applications to non root users.
https://opensource.com/article/17/12/using-sudo-delegate

Advanced Linux - Writing udev rules

Advanced Linux - Writing udev rules

Due to it's UNIX heritage, Linux gives you powerful, fine grained control over the system. udev is a prime example of that power.
https://linuxconfig.org/tutorial-on-how-to-write-basic-udev-rules-in-linux

Linux Tips & Tricks

Linux Tips & Tricks

Let the system notify you when long commands are completed.
https://www.ostechnix.com/undistract-get-notification-long-running-terminal-commands-complete/