Add file extension to all files in a folder in R
问题 As a result from a loop I have a lot of files without a file extension in a folder. How could I add a file extension (.png) to all files in the folder while keeping the original name, e.g. from NAME1 to NAME1.png , NAME3 to NAME3.png , NAME6 to NAME6.png etc using R? 回答1: With the list.files function you can retrieve the file names under a given path and with a given pattern. From them you can use paste to add your file extension and next file.rename to rename the files. For instance: