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mdtablefmt

command-line utility for reformatting markdown tables

mdtablefmt reads the text for a single markdown table from the standard input and prints the table to the standard output with the columns properly aligned.

Example

These tables both render the same but the latter (which has been piped through mdtablefmt) is easier to read.

Input

stat | before | after
---: | :-----: | :------:
Memory | 8GiB | 127GiB
CPUs | 4 | 16
Storage space | 423 G | 31 T
Storage driver | aufs | overlay2
OS | Debian GNU/Linux 8 | Ubuntu 20.04 LTS
Docker version | 17.05.0-ce | 19.03.9-ce
Memory limit support | no | yes
Swap limit support | no | yes
Kernel memory limit support | no | yes
OOM kill disable support | no | yes
CPU cfs quota support | no | yes
CPU cfs period support | no | yes
Virtualization in container support | no | yes

Output

                               stat |       before       |       after
----------------------------------: | :----------------: | :--------------:
                             Memory |        8GiB        |      127GiB
                               CPUs |          4         |        16
                      Storage space |        423 G       |       31 T
                     Storage driver |        aufs        |     overlay2
                                 OS | Debian GNU/Linux 8 | Ubuntu 20.04 LTS
                     Docker version |     17.05.0-ce     |    19.03.9-ce
               Memory limit support |         no         |        yes
                 Swap limit support |         no         |        yes
        Kernel memory limit support |         no         |        yes
           OOM kill disable support |         no         |        yes
              CPU cfs quota support |         no         |        yes
             CPU cfs period support |         no         |        yes
Virtualization in container support |         no         |        yes

The output normally has trailing spaces stripped, if you want to retain trailing spaces you can use the -no-strip flag. The following shows the difference in output (with spaces converted to . here for better visibility).

Without -no-strip:

...............................stat.|.......before.......|.......after
----------------------------------:.|.:----------------:.|.:--------------:
.............................Memory.|........8GiB........|......127GiB
...............................CPUs.|..........4.........|........16
......................Storage.space.|........423.G.......|.......31.T
.....................Storage.driver.|........aufs........|.....overlay2
.................................OS.|.Debian.GNU/Linux.8.|.Ubuntu.20.04.LTS
.....................Docker.version.|.....17.05.0-ce.....|....19.03.9-ce
...............Memory.limit.support.|.........no.........|........yes
.................Swap.limit.support.|.........no.........|........yes
........Kernel.memory.limit.support.|.........no.........|........yes
...........OOM.kill.disable.support.|.........no.........|........yes
..............CPU.cfs.quota.support.|.........no.........|........yes
.............CPU.cfs.period.support.|.........no.........|........yes
Virtualization.in.container.support.|.........no.........|........yes

With -no-strip:

...............................stat.|.......before.......|.......after.....
----------------------------------:.|.:----------------:.|.:--------------:
.............................Memory.|........8GiB........|......127GiB.....
...............................CPUs.|..........4.........|........16.......
......................Storage.space.|........423.G.......|.......31.T......
.....................Storage.driver.|........aufs........|.....overlay2....
.................................OS.|.Debian.GNU/Linux.8.|.Ubuntu.20.04.LTS
.....................Docker.version.|.....17.05.0-ce.....|....19.03.9-ce...
...............Memory.limit.support.|.........no.........|........yes......
.................Swap.limit.support.|.........no.........|........yes......
........Kernel.memory.limit.support.|.........no.........|........yes......
...........OOM.kill.disable.support.|.........no.........|........yes......
..............CPU.cfs.quota.support.|.........no.........|........yes......
.............CPU.cfs.period.support.|.........no.........|........yes......
Virtualization.in.container.support.|.........no.........|........yes......

Usage

The program prints the following text when invoked with the -h or --help flag:

usage: mdtablefmt

utility for formatting Markdown tables; reads valid markdown table data on the
standard input and writes a properly spaced and padded version on the standard
output

For more information, visit the source code repository:
https://github.com/backplane/mdtablefmt

  -no-strip
    	fully pad the rightmost output column instead of stripping trailing whitespace