I&#39;m writing a Bash script that prints some text to the screen:

    echo &quot;Some Text&quot;

Can I format the text? I would like to make it bold.

How does one output bold text in Bash?

I am using IPVanish for using a proxy while surfing; like:

    sudo openvpn --config /home/ipv/conf/ipvanish-CA-Toronto-tor-a09.ovpn

Now, I have to enter my username, after that my password.
How Can I pass those two params right as one command, so that I just use one command and the username/password are being passed automatically?


OpenVPN on Linux: passing username and password in command line

How could I do this with `echo`?

&lt;!-- language: sh --&gt;

    perl -E &#39;say &quot;=&quot; x 100&#39;

How can I repeat a character in Bash?

I have a ridiculous question due to a ridiculous problem. 

Normally if I want to get the contents of an environment variable in UNIX shell, I can do

    echo ${VAR}

Let&#39;s assume, due to my ridiculous situation, that this isn&#39;t possible. 

How do I get the contents of an environment variable to stdout, without someone who is looking at the command itself (not the output), see the value of the environment variable.

I can picture the solution being something like `echo env(NAME_OF_VAR)` although I can&#39;t seem to find it. The solution has to work in sh.

PS I can&#39;t write a script for this, it must be a built in unix command (i know, ridiculous problem)

Thanks (and sorry for the absurdity)


UNIX, get environment variable

Using php, I&#39;m trying to create a script which will search within a text file and grab that entire line and echo it.

I have a text file (.txt) titled &quot;numorder.txt&quot; and within that text file, there are several lines of data, with new lines coming in every 5 minutes (using cron job). The data looks similar to:

    2 aullah1
    7 name
    12 username

How would I go about creating a php script which will search for the data &quot;aullah1&quot; and then grab the entire line and echo it? (Once echoed, it should display &quot;2 aullah1&quot; (without quotations).

If I didn&#39;t explain anything clearly and/or you&#39;d like me to explain in more detail, please comment.



PHP to search within txt file and echo the whole line

With the curl command line tool, is it possible to `echo`, print, or view the request, and not send it? Sort of like a `-n` option? I would like to see the request header &amp; body, and anything else that&#39;s included. Is there anything else that&#39;s sent besides header &amp; body?

Echo curl request header &amp; body without sending it?

Yes, I have googled this question and even referred to my textbook (PHP by Don Gosselin) but I seriously can&#39;t seem to understand the explanation.

From my understanding:

&gt; echo = shows the final result of a function
&gt; 
&gt; return = returns the value from a function

I applied both `echo` and `return` in the following functions I can&#39;t see the difference or the &#39;effectiveness&#39; of using `return` instead of `echo`.

    &lt;?php
    echo &quot;&lt;h1 style=&#39;font-family:Helvetica; color:red&#39;&gt;Using &lt;em&gt;echo&lt;/em&gt;&lt;/h1&gt;&quot;;
    function add1($x, $y){
    	$total = $x + $y;
    	echo $total;
    }
    echo &quot;&lt;p&gt;2 + 2 = &quot;, add1(2, 2), &quot;&lt;/p&gt;&quot;;
    
    echo &quot;&lt;h1 style=&#39;font-family:Helvetica; color:red&#39;&gt;Using &lt;em&gt;return&lt;/em&gt;&lt;/h1&gt;&quot;;
    function add2($x, $y){
    	$total = $x + $y;
    	return $total;
    }
    echo &quot;&lt;p&gt;2 + 2 = &quot;, add2(2, 2), &quot;&lt;/p&gt;&quot;;
    
    ?&gt;

Both display the result!
What am I not understanding?


What is the difference between PHP echo and PHP return in plain English?

&gt; **Possible Duplicate:**  
&gt; [Reference: Comparing PHP&amp;#39;s print and echo](https://stackoverflow.com/questions/7094118/reference-comparing-phps-print-and-echo)  

&lt;!-- End of automatically inserted text --&gt;

Is there any major and fundamental difference between these two functions in PHP?

How are echo and print different in PHP?

In Bash, tried this:

    echo -e &quot;Hello,\nWorld!&quot;

But it doesn&#39;t print a newline, only `\n`. How can I make it print the newline?

I&#39;m using [Ubuntu&amp;nbsp;11.04][1] (Natty Narwhal).

  [1]: https://en.wikipedia.org/wiki/Ubuntu_version_history#Ubuntu_11.04_.28Natty_Narwhal.29




Echo newline in Bash prints literal \n

What is the difference between PHP&#39;s `print` and `echo`?

Stack Overflow has many questions asking about PHP&#39;s `print` and `echo` keyword usage. 

The purpose of this post is to provide a canonical [reference](https://stackoverflow.com/questions/3737139/reference-what-does-this-symbol-mean-in-php)  question and answer about PHP&#39;s `print` and `echo` keywords and compare their differences and use-cases.





Reference: Comparing PHP&#39;s print and echo

When outputting status messages to the console from a Windows batch file, I want to output **blank lines** to break up the output. How do I do this?


Echo a blank (empty) line to the console from a Windows batch file

I&#39;ve just faced a little PHP snippet from 3v4l: https://3v4l.org/jmrZB

    echo 1...1; //10.1

And I&#39;m afraid I have no idea how to explain its results. Why is this considered valid at all?

Why does 1...1 evaluate to 10.1?

I want to conditionally output HTML to generate a page, so what&#39;s the easiest way to echo multiline snippets of HTML in PHP 4+? Would I need to use a template framework like Smarty?

    echo &#39;&lt;html&gt;&#39;, &quot;\n&quot;; // I&#39;m sure there&#39;s a better way!
    echo &#39;&lt;head&gt;&#39;, &quot;\n&quot;;
    echo &#39;&lt;/head&gt;&#39;, &quot;\n&quot;;
    echo &#39;&lt;body&gt;&#39;, &quot;\n&quot;;
    echo &#39;&lt;/body&gt;&#39;, &quot;\n&quot;;
    echo &#39;&lt;/html&gt;&#39;, &quot;\n&quot;;

How can I echo HTML in PHP?

I&#39;m trying to use the result of `ls` in other commands (e.g. echo, rsync):

    all:
        &lt;Building, creating some .tgz files - removed for clarity&gt;
    	FILES = $(shell ls)
    	echo $(FILES)

But I get:

    make
    FILES = Makefile file1.tgz file2.tgz file3.tgz
    make: FILES: No such file or directory
    make: *** [all] Error 1

I&#39;ve tried using `echo $$FILES`, `echo ${FILES}` and `echo $(FILES)`, with no luck.

How to use shell commands in Makefile

I am trying to print a text in the terminal using echo command. 

I want to print the text in a red color. How can I do that?






                 


How to change the output color of echo in Linux

I want to write some pre-defined texts to a file with the following:

    text=&quot;this is line one\n
    this is line two\n
    this is line three&quot;

    echo -e $text &gt; filename

I&#39;m expecting something like this:

    this is line one
    this is line two
    this is line three

But got this:

    this is line one
     this is line two
     this is line three

I&#39;m positive that there is no space after each `\n`, but how does the extra space come out?

Multi-line string with extra space (preserved indentation)

When I run the following `Bash` script, I would expect it to print `Hello`.  Instead, it prints a blank line and exits.

    echo &#39;Hello&#39; | echo
Why doesn&#39;t `piping` output from `echo` to `echo` work?

Piping not working with echo command

I want to format text as a table. I tried echoing with a `&#39;\t&#39;` separator, but it was misaligned.

Desired output:

    a very long string..........     112232432      anotherfield
    a smaller string                 123124343      anotherfield

How can I align the columns of tables in Bash?

Consider this snippet: 

    $ SOMEVAR=AAA
    $ echo zzz $SOMEVAR zzz
    zzz AAA zzz

Here I&#39;ve set `$SOMEVAR` to `AAA` on the first line - and when I echo it on the second line, I get the `AAA` contents as expected. 

But then, if I try to specify the variable on the same command line as the `echo`:

    $ SOMEVAR=BBB echo zzz $SOMEVAR zzz
    zzz AAA zzz

... I do not get `BBB` as I expected - I get the old value (`AAA`). 

Is this how things are supposed to be? If so, how come then you can specify variables like `LD_PRELOAD=/... program args ...` and have it work? What am I missing?

Why can&#39;t I specify an environment variable and echo it in the same command line?

I am trying to automate the addition of a repository source in my arch&#39;s pacman.conf file but using the `echo` command in my shell script.  However, it fails like this:-

    sudo echo &quot;[archlinuxfr]&quot; &gt;&gt; /etc/pacman.conf
    sudo echo &quot;Server = http://repo.archlinux.fr/\$arch&quot; &gt;&gt; /etc/pacman.conf
    sudo echo &quot; &quot; &gt;&gt; /etc/pacman.conf
    
    -bash: /etc/pacman.conf: Permission denied

If I make changes to /etc/pacman.conf manually using vim, by doing

    sudo vim /etc/pacman.conf

and quiting vim with `:wq`, everything works fine and my pacman.conf has been manually updated without &quot;Permission denied&quot; complaints.

Why is this so? And how do I get `sudo echo` to work? (btw, I tried using `sudo cat` too but that failed with Permission denied as well) 

Why sudo cat gives a Permission denied but sudo vim works fine?

I need to see all of the `POST` results that are submitted to the server for testing.

What would be an example of how I can create a new file to submit to that will echo out all of the fields which were submitted with that form?

It&#39;s dynamic, so some fields may have a name/ID of `field1, field2, field3`, etc.


How do I print all POST results when a form is submitted?

This maybe really easy but there were no answers for it over the net. I want to echo a XML line via batch into a file but it misunderstands the XML closing tag for redirection &quot;&gt;&quot;. The line is as follows:

    echo &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&gt; &gt; myfile.xml

is there any way to give a hint to batch parser not to interpret a special string? I used double-quotes but it writes them to the file as well! The file should look like this after echo:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&gt;

using batch echo with special characters

I turned off echo in bat file.

    @echo off

then I do something like this

    ...
    echo %INSTALL_PATH%
    if exist %INSTALL_PATH%(
    echo 222
    ...
    )

and I get:

&gt;The system cannot find the path specified.

message between those two echos.

What can be the reason of this message and why message ignores echo off?


Echo off but messages are displayed

How do I echo one or more tab characters using a bash script?
When I run this code

    res=&#39;		&#39;x # res = &quot;\t\tx&quot;
    echo &#39;[&#39;$res&#39;]&#39; # expect [\t\tx]
I get this

    res=[ x] # that is [&lt;space&gt;x]



Echo tab characters in bash script

I&#39;m following [guideline][1] how to sign Android apk with Jenkins. I have parametrized Jenkins job with KSTOREPWD and KEYPWD. A part of Jenkins&#39; job configuration (Build-&gt;Execute shell) is to take those parameters and store them as environment variables:

    export KSTOREPWD=${KSTOREPWD}
    export KEYPWD=${KEYPWD}
    ...
    ./gradlew assembleRelease

The problem is when the build is over anybody can access the build &quot;Console Output&quot; and see what passwords were entered; part of that output:

    08:06:57 + export KSTOREPWD=secretStorePwd
    08:06:57 + KSTOREPWD=secretStorePwd
    08:06:57 + export KEYPWD=secretPwd
    08:06:57 + KEYPWD=secretPwd

So I&#39;d like to suppress echo before output from `export` commands and re-enable echo after `export` commands.

  [1]: http://developer.android.com/sdk/installing/studio-build.html#configureSigning

Echo off in Jenkins Console Output

How do I echo the number *2* into a file, from a batch script?

This doesn&#39;t work:

	Echo 2&gt;&gt; file.txt

because `2&gt;&gt;` is a special command. :(

How to echo &quot;2&quot; (no quotes) to a file, from a batch script?

Say I want to print html from inside a script tag.

A source like this

	&lt;div&gt;foo&lt;/div&gt;
	&lt;script&gt;
	print(&#39;&lt;div&gt;Print this after the script tag&lt;/div&gt;&#39;);
	&lt;/script&gt;
	&lt;div&gt;bar&lt;/div&gt;

should look something like this in browser after the script has run

	&lt;div&gt;foo&lt;/div&gt;
	&lt;script&gt;
	print(&#39;&lt;div&gt;Print this after the script tag&lt;/div&gt;&#39;);
	&lt;/script&gt;
	&lt;div&gt;Print this after the script tag&lt;/div&gt;
	&lt;div&gt;bar&lt;/div&gt;

I could write my own code for this purpose but since this looks to me like a very simple problem, I&#39;m guessing either I&#39;ve missed something or my thinking is flawed in some way and printing is left out intentionally.

Also, somewhat related: I&#39;d like to know if a script is (or can be made) aware of the script tags surrounding it. With this information it would be much easier to find the position for the printed html code to be injected into, assuming it&#39;s not highly discouraged.

To clarify: I don&#39;t need you to write a print function for me. I only need to know if a native method to achieve this exists and I&#39;ve missed it or alternatively the reason it shouldn&#39;t be done.

**EDIT**
I realized that I didn&#39;t think the question through.

I got my facts straight and now almost everything seems to be working. I should&#39;ve originally mentioned that the print function was needed inside templates - I&#39;m working on a template engine experiment. I managed to work it out by separating scripts from plain html and concatenating the split html sans scripts with script output.

As I was writing the code I noticed that everything wouldn&#39;t go so smooth because of the asynchronous nature of js. I guess I was expecting to be able to do any kind of js magic in templates, just like I could in php. Seems like actually supporting async code in a fool-proof manner inside templates will require some more thought.

Is there a php echo/print equivalent in javascript

Are they equal in safeness? I was informed that using

    &lt;?=$function_here?&gt;

was less safe, and that it slows down page load times.
I am strictly biased to using echo.

What are the advantages/disadvantages?

PHP echo vs PHP short echo tags

I have a php script that only produces logs to the client.  
When I echo something, I want it to be transferred to client on-the-fly.  
(Because while the script is processing, the page is blank)  
I had already played around with `ob_start()` and `ob_flush()`, but they didn&#39;t work.

What&#39;s the best solution?

PS: it is a little dirty to put a flush at the end of the `echo` call...

EDIT: Neither the Answers worked, PHP or Apache Fault? 

How to flush output after each `echo` call?

There has been variants of this question asked for generations, but despite writing some quite complicated Windows scripts, I can&#39;t seem to find out how to make them actually silent.

The following is an excerpt from one of my current scripts:

    @ECHO OFF
    SET scriptDirectory=%~dp0
    COPY %scriptDirectory%test.bat %scriptDirectory%test2.bat
    FOR /F %%f IN (&#39;dir /B &quot;%scriptDirectory%*.noext&quot;&#39;) DO (
	del &quot;%scriptDirectory%%%f&quot;
	)
    ECHO

The result of this is:

    C:\Temp&gt; test.bat
            1 file(s) copied.
    File Not Found
    Echo is off.

    C:\Temp&gt;

Whereas the &quot;1 file(s) copied.&quot; is just annoying, the &quot;File Not Found&quot; makes the user think that something has gone wrong (which it hasn&#39;t - no files is fine).


How do I make a Windows batch script completely silent?

I have a Bash script that runs a program with parameters.  That program outputs some status (doing this, doing that...). There isn&#39;t any option for this program to be quiet. How can I prevent the script from displaying anything?

I am looking for something like Windows&#39; [&quot;echo off&quot;][1].

  [1]: https://ss64.com/nt/echo.html



How can I suppress all output from a command using Bash?

I want to output some data to a pipe and have the other process do something to the data line by line. Here is a toy example:

    mkfifo pipe
    cat pipe&amp;
    cat &gt;pipe

Now I can enter whatever I want, and after pressing enter I immediately see the same line. But if substitute second pipe with `echo`:

    mkfifo pipe
    cat pipe&amp;
    echo &quot;some data&quot; &gt;pipe

The pipe closes after `echo` and `cat pipe&amp;` finishes so that I cannot pass any more data through the pipe. Is there a way to avoid closing the pipe and the process that receives the data, so that I can pass many lines of data through the pipe from a bash script and have them processed as they arrive?

How to avoid echo closing FIFO named pipes? - Funny behavior of Unix FIFOs

This is a duplicate of https://serverfault.com/questions/102098/powershell-script-showing-commands-run.  I thought it would be more appropriate to ask this question here.

I am playing around with PowerShell scripts and they&#39;re working great. However, I am wondering if there is any way to also show all the commands that were run, just as if you were manually typing them in yourself. This would be similar to &quot;echo on&quot; in batch files. I looked at the PowerShell command-line arguments, the cmdlets, but I didn&#39;t find anything obvious.

PowerShell &quot;echo on&quot;

Is there a way I can echo the whole content of a .html file in PHP?

For example, I have some sample.html file, and I want to echo that filename, so its content should be displayed.





How can I echo the whole content of a .html file in PHP?

I&#39;m trying to add color output to my errors in a bash script that I have running on a mac.  The problem is the colors are not working.  I created the simplest of scripts to demonstrate that it does not work:

    #!/bin/bash
    
    echo -e &quot;\e[1;31m This is red text \e[0m&quot;

However, when i run it, I see no colors at all, as shown in this image.  The color output of the ls command is working fine however.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/kgbnY.png

How to get osx shell script to show colors in echo

In php, is there any way to clear/remove all previously echoed or printed items?

For example:

    &lt;?php
    
    echo &#39;a&#39;;
    print &#39;b&#39;;
    
    // some statement that removes all printed/echoed items
    
    echo &#39;c&#39;;
    
    // the final output should be equal to &#39;c&#39;, not &#39;abc&#39;
    
    ?&gt;

My script uses the include function. The included files are not supposed to echo anything. Just in case someone (ex = hacker) tries, I need a way to remove.

How to clear previously echoed items in PHP

Basically I want to have the terminal output a message followed by the date and time, like &quot;Hi, today is -dateandtime-&quot;.

So echo can accomplish the first bit, and date can accomplish the last, but only separately, how can I put them together (in one command) so they output together.

Like

echo hello there

-new command-

date

Does it, but not in one line. Is pipelining the answer?


All Echo Solutions on Gang of Coders

Total of 37 Echo Solutions