Articles taggués ‘Mac OS X’

Convert HTML Page To a PDF Using Open Source Tool

10/06/2021 Aucun commentaire

Source: nixCraft

Do you need a simple open source cross-platform command line tool that converts web pages and HTML to a PDF file? Look no further, try wkhtmltopdf.

From the project home page:

Simple shell utility to convert html to pdf using the webkit rendering engine, and qt. Searching the web, I have found several command line tools that allow you to convert a HTML-document to a PDF-document, however they all seem to use their own, and rather incomplete rendering engine, resulting in poor quality. Recently QT 4.4 was released with a WebKit widget (WebKit is the engine of Apples Safari, which is a fork of the KDE KHtml), and making a good tool became very easy.

Software features

  1. Cross platform.
  2. Open source.
  3. Convert any web pages into PDF documents using webkit.
  4. You can add headers and footers.
  5. TOC generation.
  6. Batch mode conversions.
  7. Can run on Linux server with an XServer (the X11 client libs must be installed).
  8. Can be directly used by PHP or Python via bindings to libwkhtmltox.

A note about Debian / Ubuntu Linux user

You can install wkhtmltopdf using apt-get command:
$ sudo apt-get install wkhtmltopdf
$ sudo ln -s /usr/bin/wkhtmltopdf /usr/local/bin/html2pdf

Sample outputs:

[sudo] password for vivek:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 10 not upgraded.
Need to get 116 kB of archives.
After this operation, 303 kB of additional disk space will be used.
Get:1 squeeze/main wkhtmltopdf amd64 0.9.9-1 [116 kB]
Fetched 116 kB in 2s (49.4 kB/s)
Selecting previously deselected package wkhtmltopdf.
(Reading database ... 274164 files and directories currently installed.)
Unpacking wkhtmltopdf (from .../wkhtmltopdf_0.9.9-1_amd64.deb) ...
Processing triggers for man-db ...
Setting up wkhtmltopdf (0.9.9-1) ...

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Categories: Logiciel Tags:

How to Prevent & Disable Mac OS X From Sleeping From the Command Line Terminal Application

02/06/2021 Comments off

Source: nixCraft

I’m running a process to complete backup and covert images in Mac OS X laptop. I do not wish to disable sleep manually from my OS X power options (Energy Saver). How do I temporarily prevent a Mac from sleeping while my process is still active in Mac OS X Unix operating systems? How can I prevent the system from sleeping temporarily from the command prompt?

You can use the caffeinate command. This command creates assertions to alter system sleep behavior. If no assertion flags are specified, caffeinate creates an assertion to prevent idle sleep.

Another option is to use the pmset command to manipulate power management settings.



The syntax is:

caffeinate [options]
caffeinate [options] command

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Categories: Système Tags: , ,

A Shell Primer: Master Your Linux, OS X, Unix Shell Environment

31/05/2021 Comments off

On a Linux or Unix-like systems each user and process runs in a specific environment. An environment includes variables, settings, aliases, functions and more. Following is a very brief introduction to some useful shell environment commands, including examples of how to use each command and setup your own environment to increase productivity in the command prompt.


Finding out your current shell

Type any one of the following command at the Terminal app:

ps $$
ps -p $$


echo "$0"

Sample outputs:

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Categories: Système Tags: , ,

Set a Custom New Tab Page in Firefox

18/05/2021 Comments off



Firefox: If you’re not a big fan of the new speed dial tab in the newest version of Firefox, Mozilla blog Mozilla Links shows how you can customize the page to load any site of your choosing with a simple edit to the about:config file.

Removing those darn .DS_Store and .AppleDouble directories from shared network storage

06/05/2021 Comments off


Here is the command to stop the creation of .DS_Store Directories that pollute your network storage resources. For For Mac OS X Lion you need to use:
defaults write DSDontWriteNetworkStores true
Now you must Logoff or Restart.


To stop the creation of .AppleDouble folders you need to edit your AFP service configuration.  There is usually a “No AppleDouble” or “Enable AppleDouble” configuration setting that needs to be set true (For the NO option) or set to false (For the Enable Option).

Note: In FreeNAS 8.0.4 it seems that the .AppleDouble directories are created anyway regardless of setting.  But at least they seem to be empty and can be removed (rm -r /path/).

The Who, What, and When

The .AppleDouble Directories are used by Mac OS X to store Extended Attributes (exattr) for files residing on filesystems that are not formatted HFS+.  They are most commonly seen when moving a flash drive from your Mac to your Windows Machine.

The .DS_Store Directories store Finder Information.  Such as in “Get File Information” you can access a “Comments” field.  If you provide information on the file i the comment it is stored and Finder Information.  If this directory is missing on remote storage, other Mac users would not be able to see the comment you created.

Why get rid of them?

On network storage you can have the same share presented over AFP (Apple Filing Protocol) andCIFS (Common Internet File System).  Windows users that connect over CIFS can see the extra Apple directories.  The files often copy the name of the original file and prefix it with “._”.  Windows users can mistakenly access these files and think their data is corrupt.

Categories: Système Tags: , ,