Sharpen images at the command line
Fri, 04 Jan 2019 |
Ubuntu Hacks |
1 comment
If you followed Tip 154, on page 197, and Tip 11, on page 72, you'll already have come into contact with Imagemagick. This command-line program can do just about anything to images and you can learn more about it by viewing its man page (man imagemagick) or viewing its website Perhaps one of the most useful functions it can perform, besides file format conversion and resizing, is to sharpen an image. Almost all images look better when sharpened, particularly if they're being shrunk for use in...
- Access ISO images as if theyre disk drives
- Access Ubuntu files from Windows
- Acknowledgements
- Add a second hard disk
- Add a swap file or expand existing swap space
- Add drop shadows to screenshots
- Add notes to any filefolder
- Add RAR file compression support to Ubuntu
- Administer the printer from a web browser
- Alter image viewers zoom speed
- Always know your IP address
- An Ubuntu administration crash course
- Arrange output into columns
- Automate the download and installation of new theme components
- Avoid an FSpot startup error
- Avoid making badly burned CDRRW discs
- Avoid network slowdowns and incompatibilities
- Access all removable storage from the commandline
- Allow Terminal Server Client to access VNC desktops
- Avoid programs quitting when the terminal is closed
- Mirror commands and output across different terminal windows
- Process words at the commandline
- Update Ubuntu in the background
- Backup your data
- Add cool new visualizations to Totem Rhythmbox
- Be careful not to badly name filesfolders in your Windows partition
- Be told when your tea has brewed
- Beta Book
- Get warned when sudo powers hang around
- Make Gnome System Monitor appear when Ctrl AltDelete is hit
- Browse the web from the commandline
- Run two or more desktops at the same time
- See and reuse the most recently typed commands
- Stop Nautilus neatly arranging icons
- Turn your computer into a egg timer
- Burn Ubuntu CD images ISOs using Windowsfor free
- Change Gedits printing font
- Change Ubuntus system sounds
- Change your password
- Compare two files to see if theyre different
- Compilation tools youll need
- Configure Ubuntus firewall
- Connect to a remote computer as if you are sitting in front of it
- Connect to a Windows Vista computers remote desktop
- Connect to shared folders from the commandline
- Control volume levels at the commandprompt
- Convert hex to decimal and vice versa
- Convert PDFs and images to Macromedia Flash slideshows
- Create a backup ISO image of almost any physical CDDVD
- Create a boot log to help solve startup problems
- Create a file delete command that uses the trash
- Create a portable USB stick installation of Ubuntu
- Create a superuser terminal shortcut
- Create an encrypted filestore accessible from any operating system
- Create keyboard shortcuts that use the Windows key
- Create website or email links that automatically install software
- Create zip files using maximum compression
- Deactivate Caps Lock
- Define your own menu shortcut keys
- Delete files rather than trash them
- Do math at the commandline
- Downgrade to Firefox
- Download updates faster
- Dump the text on a virtual console to a file
- Edit the name artist information of MP3 files
- Editing configuration files
- Empty the trash even if told you cant
- Encrypt files so that only the recipient can open them
- Enhance the copy and paste clipboard
- Ensure people hear you when using a microphone
- Ensure Ubuntu always knows the time
- Fix USB key sticks that wrongly report theyre full
- Follow the moons phases
- Get a highquality and free commandline word processor by installing Microsoft Word
- Get a nice trashcan on the desktop
- Get better DVD movie playback
- Get freeofcharge Ubuntu CDs
- Get more data onto CDR discs
- Get notified of new Gmail messages
- Get notified when new mail arrives
- Get quick access to stuff youre working on
- Get rid of the virtual console legal boilerplate
- Give Nautilus windows their own wallpaper
- Give old Macintosh computers a new lease of life
- Give Ubuntu a static IP address
- Go completely fullscreen in virtually any application
- Graph the system bootup performance
- Format a USB memory stick or camera memory card
- Import Internet Explorer settings into Firefox
- Insert commandline output and files into the clipboard
- Never touch the mouse while using Ubuntu well almost
- Quickly run applications without opening a terminal window
- Temporarily login as root user at the commandline
- Add a menu entry for Ubuntus compression tool
- Have a cow talk to you
- Have Macs correctly refer to Ubuntu in dualboot mode
- Have Open Officeorg save in Microsoft Office format by default
- Have sudo insult you
- Find the Ubuntu version and codename
- Get your webcam working in Ubuntu
- Make Calculator to roundup or down to two digits
- How to read this book
- Run the terminal with a single keypress
- Slow down a touchpads scrolling
- Stop zip files sent colleagues getting lost in the email
- Create an alias to save typing long commands
- Do just about anything to a file by rightclicking it
- Eliminate the time period during which sudogksu powers hang around
- Install all the multimedia playback codecs youll ever need
- Make Windows bootable if things go wrong during Ubuntu installation
- OCR scanned text
- Use the mouse at the virtual console complete with copy paste
- I08 Avoid bad formatting when viewing Open Officeorg files on Windows
- Get the most out of or into a Nautilus window
- Improve the Gnome Terminal look and feel
- Install 465 open source fonts
- Install MS Comic Sansstyle fonts
- Install Skype
- Install Ubuntu partner software
- Install Windows on a computer that has Ubuntu on it
- Instantly create a HTML slideshow of photos
- Instantly edit a file when youre viewing it in less
- Instantly hide a file or folder
- Instantly view a load of images as a slideshow
- Introduction
- Monitor CPU usage
- Kill a crashed GUI
- Kill any crashed program
- Kill the network connection instantly
- Logon automatically after bootup
- Make almost any wifi card work with Ubuntu
- Make Evolution more like Outlook just a little bit
- Make fonts look superb
- Make Nautilus display traditional file permissions
- Make the commandprompt colorful
- Make the Gnome Terminal window translucent
- Make Ubuntu blue or dark grey or dark brown
- Make your Windows partition read only
- Making and keeping backups
- Miscellaneous things you ought to know
- Monitor your computers temperature and fan speeds
- Network Ubuntu Mac and Windows without doing anything
- Optimize startup for faster boot times
- Optimize Ubuntus performance
- Passwordprotect and encrypt files
- Play MP3Ogg files at the commandline
- Post blog entries from your Ubuntu desktop
- Print at the commandline
- Protect Ubuntu so it cant be booted without a password
- Quickly create links to files folders andor applications
- Quickly hideunhide windows using the keyboard
- Reconfigure your graphics card from the groundup
- Recover a damaged desktop
- Remove the bad password wait period
- Rename files quickly
- Repair Ubuntu file system errors
- Rescue a crashed GUI
- Rescue me What to do if it all goes wrong
- Run Ubuntu without Linux
- S4 Clone your Ubuntu installation onto a new hard disk
- S4 Ensure your Windows partition is always available under Ubuntu
- S6 Install a personal FTP server for file sharing
- S8 Repair Windows from within Ubuntu
- Save ink when printing
- Scan for viruses
- Scroll without the mouse in Firefox and Evolution mail windows
- Search all of Ubuntus supported software
- See a progress display as the desktop loads
- See the size of filesfolders on the desktop
- Send genuine smileys in your emails
- Set any picture as wallpaper with a singleclick
- Set the CPU speed from the desktop
- Share files across the network without tearing your hair out
- Shutdown reboot hibernate or sleep Ubuntu with a single click
- Sleep hibernate shutdown or reboot from the commandprompt
- Software installation and management
- Steal the Windows or Mac OS fonts
- Stop the cursor blinking
- Stop Ubuntu greying out stalled program windows as quickly
- Swap around the minimize maximize and close buttons
- Switch monitor resolutions with a single mouseclick
- Switch to a lightweight file manager
- Switch to bash if sh is in use
- Switch to Kubuntu Xubuntu or Edubuntu without installing from scratch
- Take complete control of desktop effects and animations
- Take full control of Ubuntus Pulse Audio sound output
- Take photos or record videos with your webcam
- Temporarily disable a user account
- Terminal window without tying up input
- The tips
- The Ubuntu desktop
- Turn any text file into a PDF at the commandline
- Turn off the beep
- Turn off the Open Officeorg splash screen
- Turn your desktop into your home folder
- Tweak Ubuntu into oblivion
- Ubuntu Kung Fu
- Use a GUI version of vim
- Use absolutely any picture as an icon
- Use alternative office applications
- Use an alternative email client
- Use an alternative wifi connection manager
- Use desktop widgets
- Use lookalikes of the Microsoft fonts
- Use syntax highlighting in Gedit
- Use the Ubuntu install CD as a generalpurpose partitioning tool
- Use the ultraquick xterm to bashout commands
- Use Ubuntu on your games console
- Use Ubuntus builtin download manager
- Use Ubuntus version of Microsoft Paint
- Use unusual characters or symbols
- Use versions of Ubuntu that are entirely Free Software
- Using gconfeditor
- Utilize all a sound cards features
- View a calendar at the command prompt
- View images without a graphical environment
- View technical details of your PCs hardware
- View the GNOME desktop version
- Visit Us Online
- Yank a USB key stick even if youre told you shouldnt
- Zoom in for more info in Nautilus
