How to text search in terminal

There’re times when I need to quickly search through occurrences of certain phrases in my PHP source files. Here is when I have to search for ‘giraffes’.

This is an example finding the word ‘giraffes’ in all PHP source files from the current directory recursively.

[code lang=”bash”]find . -name “*.php” -exec grep -i -H -n “giraffes” {} ;[/code]

This works for Ubuntu, CentOS and Mac OS X.

How to install PHP GeoIP in CentOS

I assume you already have PEAR/PECL available. I am using the CentOS’s stock PHP. First you need to update your channels:

[code lang=”bash”]kahwee:~ kahwee$ sudo pear update-channels
Updating channel “doc.php.net”
Channel “doc.php.net” is up to date
Updating channel “pear.php.net”
Channel “pear.php.net” is up to date
Updating channel “pecl.php.net”
Channel “pecl.php.net” is up to date[/code]

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How to let PHP send emails

PHP not sending emails? You need a mail transfer agent (MTA). If you’re in the Ubuntu platform, you can use postfix for this:

[code lang=”bash”]sudo apt-get install postfix[/code]

You can read on more information here.

Previously my Contact Form 7 WordPress plugin didn’t work, it works fine after I install and configured postfix. I can’t go through the specifics of the configuration with you since yours would probably differ. I selected “Internet Site” and press the return key (Enter) all the way selecting the default options. On doing so, Contact Form 7 starts to work already.

Should you need to configure postfix again, you can reconfigure too:

[code lang=”bash”]sudo dpkg-reconfigure postfix[/code]

Contact Form 7 uses WP_Mail which uses PHP’s mail() function. If you do need to troubleshoot, try sending emails with mail().

If you need additional configuration, you may need to update the following:

  • Settings SMTP and smtp_port need to be set in your php.ini
  • Also, either set the sendmail_from setting in php.ini, or pass it as an additional header.

I did not have to configure anything more than postfix. I am using Ubuntu server, on nginx web server.

How to install PHP APC in CentOS

I assume you already have PEAR/PECL available. I am using the CentOS’s stock PHP. First you need to update your channels:

[code lang=”bash”]kahwee:~ kahwee$ sudo pear update-channels
Updating channel “doc.php.net”
Channel “doc.php.net” is up to date
Updating channel “pear.php.net”
Channel “pear.php.net” is up to date
Updating channel “pecl.php.net”
Channel “pecl.php.net” is up to date[/code]

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Funny error messages in Unix

You could try these unix commands if you’re really bored. It probably works on Ubuntu too.

[code lang=”bash”]% “How poorly would you rate the Unix (so-called) user interface?
Unmatched “.

% rm congressional-ethics
rm: congressional-ethics nonexistent

% ar m God
ar: God does not exist

% [Where is Jimmy Hoffa?
Missing ].

% ^How did the sex change^ operation go?
Modifier failed.

% If I had a ( for every $ Congress spent, what would I have?
Too many (‘s.

%make love
Make: Don’t know how to make love. Stop.

% sleep with me
bad character

% got a light?
No match.

% man: why did you get a divorce?
man:: Too many arguments.

% ^What is saccharine?
Bad substitute.

% (-
(-: Command not found.

% sh

$ PATH=pretending! /usr/ucb/which sense
no sense in pretending

$ drink <bottle; opener
bottle: cannot open
opener: not found

$ mkdir matter; cat >matter
matter: cannot create[/code]

(via GNU.org)

My favorite is:

[code lang=”bash”]% man: why did you get a divorce?
man:: Too many arguments.[/code]