DZone Snippets: bash code

Watch a log and/or search for a certain term

yoghoyogho () — Thu, 18 May 2006 00:29:47 GMT

If you're developing on a server that has all PHP errors turned off, you can still watch the error log (if you have access to this file). For example on a dreamhost account you could try this:



tail -f /home/account/logs/website.com/http/error.log

As the errors pour in, you will see them come by. Change 'account' to the username you have on dreamhost and website.com to the domainname you host there. If the errors come in large amounts you can filter them by using grep:



tail -f /home/account/logs/website.com/http/error.log | grep -i "search_term"

Now only errors containing 'search_term' will be shown.

Quickly download the PEAR libraries

yoghoyogho () — Thu, 18 May 2006 00:23:51 GMT

To get a headstart for your website you can use the PEAR libraries. The following script downloads a couple of the most handy libraries, and also adds some symbolic links to the newly downloaded files.



#!/bin/bash

pear config-create $HOME $HOME/.pearrc

pear config-set php_dir $HOME/pear/lib



pear install -a PEAR



pear channel-update pear.php.net

pear install -a DB Mail

pear install -o Auth Auth_SASL Cache_Lite File

pear install -o HTML_QuickForm HTML_TreeMenu

pear install -o HTTP HTTP_Request

pear install -o Mail_Mime

pear install -o Log Pager

pear install -o Translation2-beta XML_Serializer-beta



ln -s ~/pear/pear ~/bin/pear

ln -s ~/pear/peardev ~/bin/peardev

ln -s ~/pear/pecl ~/bin/pecl

Replace old style PHP tags to new style tags

yoghoyogho () — Thu, 18 May 2006 00:21:11 GMT

Sometimes you have to work with scripts that contain old-style PHP tags. This little snippets fixes those scripts, so they use the new style PHP tags.



find * -type f -exec perl -i -wpe 's/<\?php/<\?/g' {} \;

find * -type f -exec perl -i -wpe 's/<\?/<\?php/g' {} \;

Check the syntax of a bunch of PHP files all at once

yoghoyogho () — Thu, 18 May 2006 00:19:40 GMT

Will find all files ending with 'php' and execute the syntax check of php for every found file. Useful if you quickly want to see which php file contains a parse error.



find ./ -type f -name \*.php -exec php -l {} \;

Search for files modified the last ... days

yoghoyogho () — Thu, 18 May 2006 00:17:20 GMT

Searches for files modified up to 4 days ago. Change the 4 to whatever you desire.



find ./ -type f -mtime -4 -exec ls -al {} \;

Find files with a certain extension, where the files contain a certain search term

yoghoyogho () — Thu, 18 May 2006 00:15:34 GMT

Searches the current directory and deeper for files ending with the 'php' extension, where the file itself contains 'search_term'. Useful if you're searching a large website with lots of images and you only want to find a certain function or variable.



find ./ -type f -name \*.php -exec grep -il "search_term" {} \;

Find files with certain extensions

yoghoyogho () — Thu, 18 May 2006 00:12:42 GMT

Searches the current directory and deeper for several extensions. In this example both files mathing 'php', 'html' and 'tpl' match the search.



find ./ -regex ".*\(php\|html\|tpl\)$"

As an alternative you could also use:



find ./ -iname "*.php" -or -iname "*.tpl" -or -iname "*.html"

Find files with a certain extension

yoghoyogho () — Thu, 18 May 2006 00:09:26 GMT

Searches the current directory and deeper for all files having an extension 'php'. Change this to the extension you're looking for.



find ./ -type f -name \*.php