I am trying to replace this line... strcpy(deletefile_name, string); with this one ... strlcpy(deletefile_name,string,strlen(deletefile_name); Basically, what I am doing is replacing the calls to strcpy with strlcpy (more secure). I have thousands of lines of code and going through them line by line is getting too tedious. Would someone tell me how I could do this line replacement using Sed, Awk, or Vi? I do not understand regular expressions enough to figure it out. Any help is greatly appreciated. Thanks in advance! Sam (ignore below) a ab abc abcd abcde

sed 's/strcpy(deletefile_name, string);/strlcpy(deletefile_name,string,strlen(deletefile_name);/g' inputfile Jean-Pierre.

Thanks for the quick response Jean-Pierre... Could you tell me what the syntax would be if the deletefile_name and filename strings were variable? Trying to substitute based on any given instance of strcpy over to strlcpy syntax... strcpy(variable1,variable2); to strlcpy(variable1,variable2,strlen(variable1); Thank you. Sam

This is what I'm tying to do, based on your previous instructions... sed 's/strcpy($destination,$source);/strlcpy($destination,$source,strlen($destination);/g' test1.dat I'm stuck on how I make it process every instance of strcpy. The variables are above... I think I need a regular expression, just not sure. Any assistance is greatly appreciated. Sam

Try this : sed 's/strcpy(\([^,]\+\),\([^)]\+\));/strlcpy(\1,\2,strlen(\1));/g' input_file Jean-Pierre.

Thanks again for your quick response... That syntax seems to list out the file's content verbatim with no changes. Any ideas? Thanks. Sam

Verify the command you typed. The command works fine for me : /home/jp> sed 's/strcpy(\([^,]\+\),\([^)]\+\));/strlcpy(\1,\2,strlen(\1));/g' strcpy(a,b); strcpy(xx,yy); strlcpy(a,b,strlen(a)); strlcpy(xx,yy,strlen(xx)) ^D /home/hp> Jean-Pierre.