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Which shell are you using, and how did you set $string before running that code?
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Which shell are you using, and how did you set $string before running that code?

<div>
bash shell.<br />
<br />
string=&quot;$1&quot; (value from the command line)
</div>


bash shell.

string="$1" (value from the command line)

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<div class="content wysiwyg-content">
I want to add ' in front and behind my variable and replace one character inside. <br />
<br />
Here is my input: peter:chris<br />
Here is my expected output: 'peter-chris'<br />
<br />
I have tried, but my code is failing. My echo prints nothing. Code attempt attached. <br />
<br />
Appreciate your help.<br />
<br />

<pre><code id="code-10-28124958-1">if [ -n &quot;$string&quot; ]
then
	set string = `echo &quot;'&quot;$string&quot;'&quot; | sed &quot;s/:/-/&quot;`
	echo $string;
fi</code></pre>
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</div>


I want to add ' in front and behind my variable and replace one character inside. 

Here is my input: peter:chris
Here is my expected output: 'peter-chris'

I have tried, but my code is failing. My echo prints nothing. Code attempt attached. 

Appreciate your help.

(CODE)

How To Append Text to Variable &amp; SED

The term 'shell' refers to a general class of text-based command interpreters most often associated with the UNIX and Linux operating systems. Popular shells include Bourne, Debian Almquist (dash), Korn (ksh), Bourne Again (bash) and the C shell family (csh). Some view the DOS 'cmd' prompt as a minimal shell of sorts. It is also possible to install Cygwin on Windows and emulate a full Unix environment with complete shell capabilities. Terminal emulators, such as xterm, GNOME Terminal and OS X Terminal, can be used to access shell.

Shell Scripting

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.

Unix OS

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.

How To Append Text to Variable &amp; SED

How To Append Text to Variable & SED