FURTHER COMMANDS
There are many other commands which are useful. For example: basename   removes all leading directory info and specified extensions   e.g. basename /tmp/epi.nii.gz .nii.gz   gives   epi dirname   just returns the directory path to the specified file   e.g. dirname /tmp/epi.nii.gz   gives   /tmp sort   sorts files (by line) according to alphabetic or numerical order which   reports where an executable file can be found   e.g. which flirt   gives   /usr/local/fsl/bin/flirt head   prints the first n lines of a file tail   prints the last n lines of a file touch   creates an empty file paste   merges files together (horizontally)