Find text inside all files in a folder recursively with grep command

grep -iRHn "searchText" path_to_folder

Concatenate another grep command to exclude some files, e.g: svn files

grep -iRHn "searchText" path_to_folder | grep -v ".svn" > save_ocurrences_in_a_file.txt

Find any files in a folder and sort them by last updated

find path_to_folder -type f -printf '%T+\t%p\n' | sort -n 

Find files of a certain user with users write permissions and without group write permissions

find path_to_folder -user user_name -type f -perm /u+w ! -perm /g+w

Concatenate another command to add write permissions

find path_to_folder -user user_name -type f -perm /u+w ! -perm /g+w -exec chmod g+w {} \;

Search recursively symbolic links

find path_to_folder -type l -exec ls -lad {} \;

Find zip files older than 5 days and delete them

find -name '*.zip' -type f -mtime +5 -exec rm -f {} \;

Find .svn files and delete them

find path_to_folder -name .svn -exec rm -R '{}' \;

Search recursively a folder and set permissions for web apps (644 for files, 755 for folders)

find path_to_folder -type f -exec chmod 644 {} \; && find path_to_folder -type d -exec chmod 755 {} \;

Find files by size, show the top 10

du -hsx * | sort -rh | head -10

• du command : Estimate file space usage.
• sort command : Sort lines of text files or given input data.
• head command : Output the first part of files i.e. to display first 10 largest file.

Display columns name from a table sort by Field name from shell

• Step 1: create bash script
• Step 2: use example

Step 1: create bash script

File name: desc.sh

#!/bin/bash

db_user="database_user"
db_pass="database_pass"
db_name="database_name"
db_host="database_host"
 
# table name from user input
db_table=$1
 
mysql -u${db_user} -p${db_pass} ${db_name} -h ${db_host} -e "SELECT c.COLUMN_NAME as 'Field', c.COLUMN_TYPE as 'Type', c.IS_NULLABLE as 'Null', c.COLUMN_KEY as 'Key', c.COLUMN_DEFAULT as 'Default',  c.EXTRA AS 'Extra', c.COLLATION_NAME as 'Collation', c.COLUMN_COMMENT as 'Comment', t.ENGINE as 'Engine', t.TABLE_ROWS as 'Rows' FROM INFORMATION_SCHEMA.COLUMNS as c, INFORMATION_SCHEMA.TABLES as t WHERE c.TABLE_NAME = '${db_table}' AND c.TABLE_SCHEMA = '${db_name}' AND t.TABLE_NAME= '${db_table}' AND t.TABLE_SCHEMA = '${db_name}' ORDER BY Field ASC"

Step 2: use example

• Give execution permission

chmod +x desc.sh

• Try it

./desc.sh table_name

• The objective is to save form data with file inputs and AJAX.
• Step 1: process files before the rest of data, save them to disk and database.
• Step 2: process the rest of field inputs, validate and the save them all.

HTML

<div id="wrapper">
    <form id="example-form" method="post" action="">
        <div class="form-group">
            <label for="Model[name]">Text input</label>
            <input type="text" class="form-control" name="Model[name]">
        </div>
 
        <div class="form-group">
            <label for="Model[file]">File input</label>
            <input type="file" class="form-control" name="Model[file]">
        </div>
 
        <div class="form-group">
            <label for="Model[file2]">File input 2</label>
            <input type="file" class="form-control" name="Model[file2]">
        </div>
 
        <input type="submit" class="btn btn-primary" value="Send">
 
        <div id="ajax-form-results"></div>
    </form>
</div>

Javascript

// Variable to store your files
var files;
 
// on submit, preprocess files
$('#wrapper').on('submit', 'form', uploadFiles);
 
/**
 * Catch the form submit and upload the files
 * @param {object} event
 * @returns {Boolean}
 */
function uploadFiles(event) {
 
    // create a formdata object and add the files #}
    var filesData = new FormData();
 
    // find files
    var files = [];
    $(this).find('input[type="file"]').each(function() {
        if ($(this).val() !== "") {
            files.push($(this)[0].files[0]);
        }
    });
 
    // if form has files...
    if (files.length > 0) {
        $.each(files, function (key, value) {
            filesData.append(key, value);
        });
        $.ajax({
            url: 'ajaxFileUpload.php',
            type: 'POST',
            data: filesData,
            cache: false,
            dataType: 'json',
            processData: false, // Don't process the files
            contentType: false, // Set content type to false as jQuery will tell the server its a query string request
            success: function (filesData) {
                if (data.success === true) {
                    // success so call function to process the form
                    submitForm(event, filesData);
                } else {
                    // handle errors here
                    $('#ajax-form-results').html(filesData.error);
                }
            },
            error: function (filesData) {
                // handle errors here
                console.log('Errors ajaxFileUpload: ' + filesData.error);
            }
        });
    } else {
        // process the form without files
        submitForm(event, filesData);
    }
    return false;
} // end uploadFiles()
 
 
/**
 * Proccess the form submit
 * @param {object} event
 * @param {object} filesData
 * @returns {void}
 */
function submitForm(event, filesData {
    // create a jQuery object from the form
    var form = $(event.target);
 
    // serialize the form data
    var formData = form.serialize();
 
    // if the form has files, add to formData
    if (filesData.length > 0) {
        $.each(filesData.files, function (key, value) {
            formData = formData + '&filenames[]=' + value;
        });
    }
 
    $.ajax({
        url: 'ajaxSubmitForm.php',
        type: 'POST',
        data: formData,
        cache: false,
        dataType: 'json',
        success: function (data) {
            if (data.success === true) {
                // do whatever, send a OK message for example
                $('#ajax-form-results').html(data.message);
 
                // we can refresh some page content here...
 
            } else {
                // Handle errors here
                $('#ajax-form-results').html(data.error);
            }
 
            // in case we made a submit form by Bootstrap modal, hide it by force
            $('body').removeClass('modal-open');
            $('.modal').modal('hide');
            $('.modal-backdrop').remove();
        },
        error: function (data) {
            // Handle errors here
            console.log('Errors ajaxSubmitForm: ' + data.error);
        }
    });
 
} // end submitForm

ajaxFileUpload.php

<?php
$data = [];
 
// if any files, start...
if (isset($_FILES[0])) {
    $success = true;
    $files = [];
 
    // upload dir example
    $uploadDir = 'uploads/files/';
    if (!is_dir($uploadDir)) {
        mkdir($uploadDir);
    }
 
    foreach ($_FILES as $file) {
        $fileName = time() . '_' . $file['name'];
        if (move_uploaded_file($file['tmp_name'], $uploadDir . basename($fileName))) {
 
            $fileModel = new FileExampleModel();
            $fileModel->filename = $fileName;
            $fileModel->filepath = $uploadDir . $fileName;
            $fileModel->filemime = $file['type'];
            $fileModel->filesize = $file['size'];
            $fileModel->origname = $file['name'];
            $fileModel->status = true;
            if (!$fileModel->save()) {
                $success = false;
                break;
            }
 
            // return id from database to link later in the last step
            $files[] = $fileModel->id;
        } else {
            $success = false;
        }
    }
 
    if ($success === true) {
        $data = ['success' => $success, 'files' => $files];
    } else {
        $data = ['error' => 'There was an error uploading your files'];
    }
} else {
    $data = ['success' => $success];
}
 
echo json_encode($data);

ajaxSubmitForm.php

<?php
$success = false;
$message = null;
 
if (isset($_POST['Model'])) {
 
    // example save Model data
    $model = new ModelExample();
    $model->setAttributes($_POST['Model']);
    $model->validate();
 
    if ($model->save()) {
        // assign files if we send them by 'filenames' value in the javascript function submitForm
        if (isset($_POST['filenames'])) {
            foreach ($_POST['filenames'] as $fileId) {
                $modelFileRelation = new FileExampleRelationModel();
                $modelFileRelation->model_id = $model->id;
                $modelFileRelation->file_id = $fileId;
                $modelFileRelation->save();
            }
        }
        $success = true;
        $message = 'Form submitted correctly';
    } else {
        // if something go wrong, we should control what to do with the uploaded files
        $success = false;
        $message = $model->getErrorMessage();
    }
}
 
echo json_encode(['success' => $success, 'message' => $message]);

Objective

Make whatever we want before validate and submit a node.

hook_node_validate

/**
 * hook_node_validate
 */
function my_module_node_validate($node, $form, &$form_state)
{
    if ($node->type == 'article') {
        // Check whatever condition with the node content
        if (!isset($node->body)) {
            form_set_error('body', t('Body can\'t be empty'));
        }
    }
}

hook_node_submit

/**
 * Hook node_submit
 */
function my_module_node_submit($node, $form, &$form_state)
{
    global $base_url;
 
    if ($form['#form_id'] == 'my_content_type_node_form') {
        // Do whatever before save
 
        // ...
 
        // Save node
        node_save($node);
 
        // Set message
        drupal_set_message(t('Content has been submitted correctly.'));
 
        // Redirect
        drupal_goto($base_url . '/my_custom_page');
    }
}