In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
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how to output a command result to a file?
In Linux we can output command result directly to a file using output operator(>). Suppose we want to list directory and redirect to to it a file called mydir, here is the trick
ls > mydir
cat mydir
You may love to learn following Linux commands and tutorials
In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
Follow us and start learning Linux today
cat
cat is used to create ,view files in Linux. It is useful when dealing with scripts and output some command result. It can used to view multiple files as follows
cat file1 file2
To create file we can use the cat with an input file name as follows
cat> file name
Ctrl+Z
You may love to learn following Linux commands and tutorials
For copying content of a file into another we can use
In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
Follow us and start learning Linux today
bc
bc is a command line arithmetic calculator. It is a an arbitrary calculator language which means that it is an interactive calculator programming language. We can use expressions,variable,print,decision make statement etc
a=13
print a
a<1
0
a>12
1
A comparison with >,< return 0 if it fails or 1 if it it true, I think that make sense.
We can also use the bc with output statement as follows
echo '100*9'|bc
You may love to learn following Linux commands and tutorials
In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
Follow us and start learning Linux today
banner
banner is a command for fun, it print first 10 character in a string with big ASCII character. Yo can install the banner using the following command
sudo get install sysvbanner
banner LINUX
You may love to learn these Linux commands and tutorials
In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
Follow us and start learning Linux today
apropos
Sometimes it is hard to remember everything we learned,earned. isn’t it ?. Linux has many commands, lots of commands, how can I memorize all these ? impossible.
Here is command every Linux had which help us to find commands based on purpose/keyword.
It can’t memorize but can help find something worthy
apropos search man page and bring a list of commands. For example apropos cpp will brings all cpp commands.
apropos python
apropos printer -- list all printer commands
You may love to learn these Linux commands and tutorials
In this series of mini posts I will teach you a Linux lesson every day, it can be command , tricks , how to. The post will cover for beginner to advanced level. Welcome to Linux terminal.
Follow us and start learning Linux today
aplay and aplaymidi
aplay allows us to play music from a terminal window with options such as delaying setting frequencies etc . Check out aplay –help for complete list of supported formats.
We can set duration of the play using the –duration option. It can play on a selected device on a network. It works with ALSA audio driver.
Wanna play a MIDI file ? aplaymidicommand will be at your service. A hardware MIDI device is required to play the MIDI file
Sample usage
The following command will play the mp3 form 30 seconds
alpay -d 30 -r2500hz jinglebell.mp3
aplay --help
alpaymidi -d 30 play.midi
You may love to learn these Linux commands and tutorials
Flutter can be used to create web applications, which is possible by enabling the feature. Before that I would like recommend the basic flutter setup on Ubuntu post.
Lets Install Flutter for Ubuntu Linux development. As a open source project, we can install the flutter SDK from GitHub.
The prerequisites
In order to clone the repository we have to use git . In case your SUSE doesn’t know what it is, let’s install it with snap . Also recommend to have Visual Code /Atom for editing the code.
The following post may help you to install VS Code on Ubuntu
Install the git
sudo snap install git
Clone the repo
Get the latest stable version from GitHub repository or alternatively can download from flutter site
Before starting make sure you have chrome/chromium installed on your system. Otherwise the feature may not work
For enabling the web feature we have to switch to the beta channel ( web feature is an experimental feature and official full support is not yet released)
Flutter can be used to create Linux applications, which is possible by enabling the feature. Before that I would like recommend the basic flutter setup on Ubuntu post.
Lets Install Flutter for Ubuntu Linux development. As a open source project, we can install the flutter SDK from GitHub.
The prerequisites
In order to clone the repository we have to use git . In case your SUSE doesn’t know what it is, let’s install it with snap . Also recommend to have Visual Code /Atom for editing the code.
The following post may help you to install VS Code on Ubuntu
Install the git
sudo snap install git
Clone the repo
Get the latest stable version from GitHub repository or alternatively can download from flutter site
Chromium browser is a opensource browser identical to Google Chrome, you can install Chromium in Ubuntu Linux using the snap package manager as follows
