Changing the extension of large number of files

Sunday, December 30, 2012 awk , mv , rename 0 Comments

I want to change extension of large number of files,

Example: "ABC.dat.length.doc.fasta"
Desired: ABC.mat

solutions for this is:

ls -1 *.dat.length.doc.fasta | nawk '{p=$0;gsub("dat.length.doc.fasta","mat");system("mv "p" "$0); }'