Dear fellows. I am new user of perl. I need your help in a problem. I have 200 files with extension .log. Each file contains alot of text and information. But I am only concern with a term in each file as SCF Done = some value of energy. The value of energy is different in each file. I want to make a proscript with perl in which I want: 1. Find the file among 200 files which contains lowest value of energy I.e. lowest value of SCF Done. 2. From a column say column $3 of that file found in step 1, individually substract the column $3 of all remaining 199 files. 3. Report the result of step 2 for each file separately in a single column in a single text file. Please help me as I have been struggling for a week. Anxiously waiting your reply.

In reply to Making commond for large number of files by acrobat118

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