viewvc – serve current directory in web interface.

Here is the description of viewvc:

ViewVC is a browser interface for CVS and Subversion version control
repositories. It generates templatized HTML to present navigable directory,
revision, and change log listings. It can display specific versions of files
as well as diffs between those versions. Basically, ViewVC provides the bulk
of the report-like functionality you expect out of your version control tool,
but much more prettily than the average textual command-line program output.

and to install, just execute:

sudo yum install viewvc

And when you want to serve the current directory in the web browser, you just need to execute the following command in that directory:

/usr/lib/python2.7/site-packages/viewvc/bin/ -r $PWD


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vim mappings for multiple files.

If you open multiple files in vim with command line option. Then the only way to move between the files is “:n” and “:N”. There is a easier way to do this. Just add mappings for this in vimrc. Here is what you can use.

map  :N
map  :n

And if you want to make sure that you move to the prev or next file after saving the file, then you modifyt the mapping like this:

map <c-left> <Esc>:w|N<CR>
map <c-right> <Esc>:w|n<CR>
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C program to get the ascii string from a string

Example diagram of the printf function in the ...
Example diagram of the printf function in the C programming language (Photo credit: Wikipedia)

Lot of times, you would like to get the complete string in hex or ascii format and if you are one of them then this is something that will be helpful for you 🙂

Example output:

lp-amita[d=~/bin]> ./ascii aamit
String – aamit, Length – 5

String : aamit
Hex    : 0x61616d6974
Dec    :   9797109105116

And the source code:


/*n* =====================================================================================
*       Filename:  ascii.c
*    Description:  ascii to dec
*        Version:  1.0
*        Created:  03/02/2012 12:08:49 PM
*       Revision:  none
*       Compiler:  gcc
*         Author:  Amit Agarwal (aka)
*  Last modified: Thu Mar 08, 2012  08:47PM
* =====================================================================================
void main (int argc, char **argv){
    int i=0;
    char a[200]="",b[200]="";
    printf("String - %s, Length - %dn",argv[1],strlen(argv[1]));

    while (i < strlen(argv[1])){
    printf ("n");
    printf ("String : %sn",argv[1]);
    printf ("Hex    : 0x%sn", a);
    printf ("Dec    : %sn", b);
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