lsfrom

lsfrom lists the files and/or dirs in a directory starting from the given filename or the next one after that, using the current locale collation order.

Tutorial

Consider a directory with a few files:

$ ls A b B C 

(lsfrom is typically more useful in larger directories, but to keep things simple let's use a small example here.)

Let's list the files after b:

$ lsfrom --after b/ B C 

Equivalently the files from B:

$ echo $(lsfrom --from B) B C 

We can also list until:

$ lsfrom --until B A b B 

Note the file (collation) order will depend on the locale in general:

$ LC_COLLATE=C echo $(lsfrom -f B) B C b 

--from/--after can be combined with --until/--before. Without any of these options, the output should be similar to ls -A, but only 1 file per line.

The file of the path given does not need to exist (unless using --strict mode):

$ lsfrom -a /t /tmp /usr /var 

It is also possible to filter the listing with --dirs or --files.

A common use-case is continuing a program or script on the entries of a directory after a failure, etc:

$ myscript.sh $(lsfrom -f next) 

or only running a command on a subrange of files or dirs in a directory.

Usage

$ lsfrom --version

2.0 

$ lsfrom -h

List directories files starting from file Usage: lsfrom [--version] [-s|--strict] [-A|--all] [--dirs | --files] [(-f|--from STARTFILE) | (-a|--after STARTFILE)] [(-u|--until LASTFILE) | (-b|--before LASTFILE)] lsfrom lists the files in a directory that follow from the given file Available options: -h,--help Show this help text --version Show version -s,--strict fail if specified file(s) do not exist -A,--all include hidden (dot) files --dirs Only list directories --files Only list files -f,--from STARTFILE files from STARTFILE -a,--after STARTFILE files after STARTFILE -u,--until LASTFILE files until LASTFILE -b,--before LASTFILE files before LASTFILE 

Requirements

Tested on Linux (may also work on MacOS): specifically it uses libc collation (wcscoll()) for file ordering.

It also uses ls to list files sorted in the locale collation with the -A option to exclude ./ and ../ (ie coreutils).

Installation

stack install lsfrom or cabal install lsfrom.

Contribute or feedback

lsfrom is distributed with BSD license and the project is hosted at https://github.com/juhp/lsfrom.