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Check Whether a User Exists
I want to create a script to check whether a user exists. I am using the logic below:
17 Answers
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What is the difference between require() and library()?
...rary(package, character.only=T)
}
}
Pro tips:
When used inside the script, you can avoid a dialog screen by specifying the repos parameter of install.packages(), such as
install.packages(package, repos="http://cran.us.r-project.org")
You can wrap require() and library() in suppressPackageS...
How do you deploy your ASP.NET applications to live servers?
... and email it to you. With this you can use SQL Compare to generate a sync script, which you can then email back to be run on the remote site.
– David Atkinson
Mar 11 '11 at 22:39
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Is there an interpreter for C? [closed]
...cific to your needs.
A notable interpreter is "Ch: A C/C++ Interpreter for Script Computing" detailed in Dr. Dobbs:
Ch is a complete C interpreter that
supports all language features and
standard libraries of the ISO C90
Standard, but extends C with many
high-level features such as string
type and...
How do I pass multiple parameters into a function in PowerShell?
...own. There are others as well, but probably the most useful one is ValidateScript. This takes a script block that must evaluate to $true, so the sky is the limit. For example:
function Get-Something
{
Param
(
[Parameter(Mandatory=$true, Position=0)]
[ValidateScript({ Test-...
Scroll to the top of the page using JavaScript?
How do I scroll to the top of the page using a JavaScript? It is desirable even if the scrollbar instantly jumps to the top. I'm not looking for a smooth scrolling.
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How do I tell git to always select my local version for conflicted merges on a specific file?
...").
You may have a config file template with tokenized values in it, and a script transforming that config.template file into a private (and ignored) config file.
However, that specific remark does not answer what is a broader more general question, i.e. your question(!):
How do I tell git t...
Groovy executing shell commands
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It is not working with Bourn Again Shell script !#/bin/bash,
– Rashmi Jain
Nov 19 '18 at 8:13
1
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How to kill a child process after a given timeout in Bash?
I have a bash script that launches a child process that crashes (actually, hangs) from time to time and with no apparent reason (closed source, so there isn't much I can do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not re...
What's a concise way to check that environment variables are set in a Unix shell script?
I've got a few Unix shell scripts where I need to check that certain environment variables are set before I start doing stuff, so I do this sort of thing:
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