basename and dirname

basename

basename is a command used to get the filename or the leaf directory name from a path given. basically it will select the last string which is prefixed by /.

For example:

>basename /x/y/z/abc.txt
abc.txt

The above command will bring output as abc.txt

>basename /x/y/z/
z

It will bring z as output

Please note , inside a script if we use basename $0 , it will bring the name of the script. It has many uses.

dirname

dirname will bring the path of the directory. ie the prefix for / for a leave directory name or file.

For example:

>dirname /x/y/z/abc.txt
/x/y/z

The above command will bring output as /x/y/z

>dirname /x/y/z/
/x/y

It will bring /x/y as output

Comments

C programing : File

/* Program to take lines 1,4,7,10.... from a text file and to write into a new file. It is written in c with platform devcpp*/ /* eg:- input file -> ab.txt contain 1 lady gaga sdrgrg ergerg 2 oraph winfrey dfgdr dfgdf . output file neww.txt 1 lady gaga 2 oraph winfrey . . */ #include #include #include using namespace std; main() { char c; FILE *fp1,*fp2; if(fp1=fopen("e:\\ab.txt","r")) { cout<<"\n opened fp1"; } else { cout<<"\n failed fp1"; } if( fp2=fopen("e:\\neww.txt","w") ) { cout<<"\n opened fp2"; } else { cout<<"\n failed fp2"; } while(!feof(fp1)) { c=getc(fp1); while(c!='\n') { putc(c,fp2); c=getc(fp1); } putc('\n',fp2); c=getc(fp1); while(c!='\n') { c=getc(fp1); } c=getc(fp1); while(c!='\n') { c=getc(fp1); } } cout<<"\n End"; getch(); return 0; }

OpenCV installation with Visual Studio 2010

Hi all.I will show you how to install OpenCV library in windows with Visual Studio 2010 to use with Visual C++ Here I am show to install OpenCV Ver 2.2. 1. Download the OpenCV from source forge The link is : http://sourceforge.net/projects/opencvlibrary/files/opencv-win/ 2. Install the OpenCV to any drive.I have installed as C:\OpenCV2.2 3. Next open Visual Studio 2010.Select New>Project 4. Select Win32 Console Application from Visual C++ popup. 5. Give the project a name and press OK . I gave as 'helloworld' 6. Click Finish to continue.You can see a new file has opened where you can type your code. 7. Next select Project> <your project name> Properties . 8. Go to VC++ Directories and select Include Directories.There add the two links to that a) C:\OpenCV2.2\include b) C:\OpenCV2.2\include\opencv 9. Next Go to Library Directories and add the following link a) C:\OpenCV2.2\lib 10. Now Go to Linker option from the left

Install sublime editor

Hi. Sublime editor is a light weight editor and very helpful for developers to write code.It will highlight the code in colors for easy readability. Sublime editor 3 is the latest one available as of now . The below link shows how to install sublime editor in CentOS . http://software-engineer.gatsbylee.com/how-to-install-sublime-3-on-centos-7-rhel-7/ To know about you system OS is 32 bit or 64 bit , use the below command. >uname -a

Tech Info Talks

Search This Blog