How to unlock a locked SSH terminal accidentally by ctrl-s on Linux?

ByEric Ma Mar 24, 2018Mar 24, 2018

I find I sometimes lock the SSH terminal accidentally by ctrl-s on Linux. How to unlock/unfreeze it?

Ctrl-s: lock the SSH terminal.

Ctrl-q: unlock the SSH terminal.

Tutorial

How to get a substring at words boundaries in PHP?
ByEric Ma Mar 24, 2018Aug 8, 2020

How to get a substring at words boundaries in PHP? For example, for a string $a = “ab cc dde ffg ff”;, I would like to get its substring of length at most 7 from position 0 without breaking words. A simple substring($a, 0, 7) will break the word dde. Here, we consider “words” are…

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QA

In Node.js, how to import functions from another JavaScript file?
ByEric Ma Mar 24, 2018Mar 24, 2018

In Node.js, how to import functions from another JavaScript file like source common.sh in Bash? In the .js file to be imported such as ‘common.js’, organize functions to be exported like module.exports = { func1: function () { // func1 impl }, func2: function () { // func2 impl } }; In the other .js…

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QA

How to set and get an environment variable in C on Linux?
ByQ A Mar 24, 2018

How to set and get an environment variable in C on Linux? You can use the setenv and getenv POSIX APIs to set and get environment variables. To add or change environment variable: #include <stdlib.h> int setenv(const char *envname, const char *envval, int overwrite); To get value of an environment variable: #include <stdlib.h> char *getenv(const…

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Programming

Filter Salutation in Microsoft Dynamics CRM
ByEthan Millar Dec 15, 2016Aug 30, 2020

In this tutorial, Microsoft Dynamics CRM India experts will teach you how to filter salutation based on Gender field in MS CRM. You can follow the step-by-step guide shared in this post to avail the results. Description- According to the requirement we need to filter salutation based on gender in contact entity. For this we…

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QA

Cannot start VM with error “no network with matching name ‘default'”
ByWeiwei Jia Mar 24, 2018Jan 7, 2020

I update libvirt version and want to start VM with the new libvirt tools but I failed as follows. > sudo virsh start kvm1 error: Failed to start domain kvm1 error: Network not found: no network with matching name ‘default’ It seems that the default ‘virbr0’ is missing after I update libvirt so I solve…

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QA

How to manage plugins for Vim?
ByQ A Mar 24, 2018

The Vim plugin directory under ~/.vim seems messy—a plugin has different files in different directories and the files from different plugins are put together. This is hard to add/remove plugins. Is there any better method for managing them? I use pathogen and am very happy with it. After installing pathogen, any plugins you want to…

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One Comment

Ghulam Abbas Safdarzada says:

Mar 11, 2023 at 9:36 am

Hello, i recently installed linux, then used the terminal for some commands to install apps, but then as i closed the terminal, the terminal asks me to connect to my ssh server or hostname. I tried a lot of SSH connetions but they all got refused. At first in my terminal my username was ghulamabbassafdarzada@penguin, now that SSh does not work. How can i fix that and be able to use my terminal again?

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