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How to customize part of a string?

akohan asked
Last Modified: 2012-05-05
Hello group,

I need to call an external command in my C code. Let's say I need to call ls command but passing parameters could be variable. How can I do that?
I was planning to do it using sprtinf() but I rather go with char* string type.

so instead of  using array and sprintf(buf, "ls %s -t ", filename);
I want to do it using char* i.e.

    char* cmdstring = "/home/user1/cmd1 %s %d"  // I know this is not valid but how can I do it using  char*  ?

but I'm not sure how I can change those parameters in char* as we can do in sprintf.

any idea is appreciated.


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