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Questions tagged [heredoc]

A Here-document is a special syntax of writing literal strings in sourcecode, used by different programming languages.

A heredoc or Here-Document is a way of writing literal strings in sourcecode. Many languages use heredocs: PHP, Perl, C#...

Although syntax can differ between programming languages, most heredocs start by putting a keyword, and end when the keyword is encountered as the only element on a line (no spaces, tabs or other characters are allowed). Perl example:

my $text = <<KEYWORD; #Any non-reserved word would do
This is some text.
It can contain $othervariables which will be replaced
Unless KEYWORD was between single quotes, in Perl.
KEYWORD
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No such file or directory in Heredoc, Bash

I am deeply confused by Bash's Heredoc construct behaviour. Here is what I am doing: #!/bin/bash user="some_user" server="some_server" address="$user"@"$server" printf -v user_q '%q' "$user" function run { ssh "$address" /bin/bash…
Alex
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How to search and replace in ksh within a heredoc variable once already set?

I don't have extensive experience in ksh and am having a rough time with a multi-line variable in a script I'm trying to revise. Basically, I'm looking to strip out the first part of the resulting output up until some "CAMP" text and keep whatever…
MattB
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Symfony console, file paths, /dev/fd/0 trick

I have my own symfony console commands, some of which take a filename as the argument. eg. $ php app/console mycommands:doTheThing /path/to/my/file.txt I have tried using the /dev/fd/0 trick to use a string instead of a file here, however it's still…
Brian Brownton
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For each line in command output add to array

I am trying to do the following in a bash script: add all the device node files which don't start with /dev/sda to an array called devices. As the script will be executed on a read-only filesystem, I cannot use here documents. Here is my…
user2747949
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How can I execute SSH command with output pagination Heredoc

I'm trying to execute commands in a heredoc block SSH session using something like this: ssh -tt user@domain << 'END' > ./file.txt some command END The command is executed and saved a portion of the output at file.txt. The problem is that the…
Michael Becerra
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regex for catching heredoc in JavaScript

I'm having a perl script, which looks for example as follows: #/usr/bin/perl -w print 'My output: '; print <
Benjamin J.
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Externalize template from heredoc

How can I externalize the template part of a "heredoc"? I have a bash script that uses a "heredoc" to write data to a file: foo=bar data=$(cat <
matsev
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Ruby printing using here documents

I am completely new to Ruby. I am trying to print the type and the name of a class using a method but I am getting this syntax error I cannot figure out: Code/oop.rb:47: syntax error, unexpected end-of-input puts <
Marcus
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How to pass html codes in the values of text in a form and display it

So i've updated the codes. i'm trying to make a radio box so when yes is checked on the radio box a textbox appears using angular.js hoping it would work.
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Multiline comment missing. at heredoc

I used ejs and heredoc to compile xml files : const ejs = require('ejs'); const heredoc = require('heredoc'); var tpl = heredoc(function(){/* ]]>
Seven
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PHP Heredoc won't display variables in HTML - WordPress

I have written some functions in my functions.php in my theme. I have: $usrProfileHTML = <<
{$envUserProfile['eUserName']} …
Milos
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Unable to use here-document delimited by EOF within phing XML

I have some commands to be run after switching to a different user. I need to do this in a build xml file. Following is what I have done -
Sandeepan Nath
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Writing a bash script from bash script. Lines without interpretation

I want to create a bash script from a bash script. The problem doing it with old echo style (example echo -e "some commands" > /path/to/file.sh) is the commands are interpreted and substituted by its values. Googling I found this solution on this…
OscarAkaElvis
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PHP won't interpret heredoc string

I am using PHP '5.6.16' and it refuses to interpret that Heredoc string with exception: Parse error: syntax error, unexpected end of file in ..... on line 131 131 is the end of the file. Without the heredoc string all interprets well. $data =…
Henry Lynx
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is heredoc a good way to implement mvc?

Is Heredoc in MVC a good way to begin my foray into separating layers? I read one place it could be use and another that heredoc had more problems than it solved.
johnny
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