Keywords: mrtcal-user-manual

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## Indexing and listing a directory

The easiest indexing method is the following one:

    MRTCAL> index build  ! Build the index of IMB-FITS files in the current directory

The `INDEX` command offers many possibilities, such as recursive indexing, restricting to some dates or patterns, indexing read-only directories, waiting for new files to appear... See `HELP INDEX` for details.

Once the index is built, you can access its contents with e.g.

    MRTCAL> index open                  ! (Re)open the index file
    MRTCAL> mfind                       ! Select all the entries in the index
    MRTCAL> mlist                       ! Sequential list
    MRTCAL> mlist /toc                  ! Summarized list
    MRTCAL> mlist /column number projid ! Custom list

`MFIND` and `MLIST` offer a variety of options so that you can check IMB-FITS contents and setup a list of scans to be calibrated.