How do I erase printed characters in a console application(Linux)?

Posted by Binny V A on Stack Overflow See other posts from Stack Overflow or by Binny V A
Published on 2009-01-10T07:42:01Z Indexed on 2010/05/08 17:58 UTC
Read the original article Hit count: 153

Filed under:

linux

|

console

|

erase

|

character

Hi all,

I am creating a small console app that needs a progress bar. Something like...

Conversion: 175/348 Seconds   |==========          |  50%

My question is, how do you erase characters already printed to the console? When I reach the 51st percentage, I have to erase this line from the console and insert a new line. In my current solution, this is what happens...

Conversion: 175/348 Seconds   |==========          |  50%
Conversion: 179/348 Seconds   |==========          |  52%
Conversion: 183/348 Seconds   |==========          |  54%
Conversion: 187/348 Seconds   |===========         |  56%

Code I use is...

print "Conversion: $converted_seconds/$total_time Seconds   $progress_bar  $converted_percentage%\n";

I am doing this in Linux using PHP(only I will use the app - so please excuse the language choice). So, the solution should work on the Linux platform - but if you have a solution that's cross platform, that would be preferable.

© Stack Overflow or respective owner

Related posts about linux

apt-get install and update fail

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I've got a problem with apt-get update and apt-get install ... commands . every time update or installing fails and errors are : Get:1 http://dl.google.com stable Release.gpg [198B] Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_US Get:2 http://dl… >>> More
kernel module compiling error

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
sh@ubuntu:/home/ccpp/helloworld$ make gcc-4.6 -O2 -DMODULE -D_KERNEL_ -W -Wall -Wstrict-prototypes -Wmissing-prototypes -isystem /lib/modules/`uname -r`/build/include -c -o hello-1.o hello-1.c hello-1.c:4:0: warning: "MODULE" redefined [enabled by default] <command-line>:0:0: note: this is… >>> More
Build-Essentials installation failing

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am having trouble accessing the several critical header files that show to be a part of the build process. The "Ubuntu Software Center" shows "Build Essentials" as installed: Next I did the following two commands, which did not improve the problem: ~$ sudo apt-get install build-essential [sudo]… >>> More
Updating Debian kernel

as seen on Super User - Search for 'Super User'
I'm trying to update my Debian machine to 2.6.32-46 (which is the new stable). However, after doing apt-get update my apt-cache search linux-image shows me: linux-headers-2.6.32-5-486 - Header files for Linux 2.6.32-5-486 linux-headers-2.6.32-5-686-bigmem - Header files for Linux 2.6.32-5-686-bigmem linux-headers-2… >>> More
Serial connection over a single USB cable (Windows to linux, or linux to linux)

as seen on Server Fault - Search for 'Server Fault'
I'm helping out with a project for an embedded device that only has USB and no serial. This device is running Linux. These days, when we need to connect to a serial port on a device we typically use a USB to serial adapter (on something like a phone system or a load balancing device, etc). I would… >>> More

Related posts about console

Having the output of a Console App in Visual Studio instead of the Console

as seen on Stack Overflow - Search for 'Stack Overflow'
When doing "Console" apps in Java with Eclipse, I see the output being put in a text box on the IDE itself, instead of having a Console popping up like in Visual Studio. This comes in handy, as even after the program has exited, I can still make good use of the text that was written in it, as it doesn't… >>> More
Need an example about console application which user can interact console window

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello everyone, I need write a console application like as hiren boot screen: User can input a arrow key or a number for choosing. When a menu item is selected, I will fill a background for the selected menu item. Please give me some guideline or example. Thanks. >>> More
my C++ console program not working writing to console

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to write something.. to output to the console.... this is in my int main function...... using Foundation.Foundation; NSString* myString = @"Output Test"; NSLog(@"%@", myString); And I get the errors Error 1 Syntax error, '(' expected Error 2 ) expected >>> More
Trying to run my code and compiler seems to just close after it executes [migrated]

as seen on Programmers - Search for 'Programmers'
I am trying to run a program and the compiler seems to just crash right after it executes ... i have no build errors so i am wondering what the hell is going on ... I am a bit of a novice so all help would be appreciated =). I don't know if you might have time to scan through the code but this is… >>> More
All downloads being interrupted

as seen on Super User - Search for 'Super User'
System: Windows 7 Professional 64bit. 8GB RAM, Intel i5-2400 CPU, +300GB free on the hard drive. AVG Internet Security 2012 (enabled & disabled, with firewall enabled and disabled - no effect for either). This computer is less than a year old. Network: This problem is occurring on a single computer… >>> More