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I'm in a directory where running tree command produces something like this:

├── directory1
│   └── image_sequence
│       ├── image.0001.jpg
│       ├── image.0002.jpg
│       ├── image.0003.jpg
│       ├── image.0004.jpg
│       ├── image.0005.jpg
│       └── image.0006.jpg
│ 
└── directory2
    ├── somefile.ext
    └── someanotherfile.ext2

The image sequence inside image_sequence produces a large listing that I want to trim. My desired output is something like below:

├── directory1
│   └── image_sequence
│       └── image.####.jpg
│ 
└── directory2
    ├── somefile.ext
    └── someanotherfile.ext2

Can the output of tree command somehow be modified?

Santosh Kumar
  • 3,893
  • I'm confused about whether you want to use the tree command or not. – Jeff Schaller May 28 '19 at 13:00
  • https://unix.stackexchange.com/q/334438/117549 may be the answer to this question; see also https://unix.stackexchange.com/q/368884/117549 and https://unix.stackexchange.com/q/47805/117549 – Jeff Schaller May 28 '19 at 13:02
  • Tree command can be used, except that the whole sequence listing needs to converted to image.####.jpg format. Then use Python to modify image sequence output. The links you gave suggested the flags which will completely omit the output of image sequence. There's also an option called --filelimit which is close to what I want, but again it completely omits the image sequence output. I fear that using Python completely will not produce the identical output (the symbols and all). – Santosh Kumar May 28 '19 at 13:45

2 Answers2

1

Try this:

tree | sed '/\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 image\.[0-9]\+\.jpg/d; s/\(\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 image\.\)[0-9]\+\(\.jpg\)/\1####\2/'
  • The first /.../d; deletes all lines containing ├── image.[0-9]+.jpg (pseudo-pattern) entries
  • The second s/.../\1####\2/ replaces the last line └── image.[0-9]+.jpg

Output:

$ tree | sed  '/\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 image\.[0-9]\+\.jpg/d; s/\(\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 ima
ge\.\)[0-9]\+\(\.jpg\)/\1####\2/'
.
├── directory1
│   └── image_sequence
│       └── image.####.jpg
└── directory2
    ├── someanotherfile.ext
    └── somefile.ext

3 directories, 8 files

This will of course only work if all files in image_sequence match the image pattern and will modify filenames in other directories matching the patterns. If the last file in image_sequence for example is readme.txt, then you will remove all image entries instead.

Freddy
  • 25,565
  • What are those hex values? – Santosh Kumar May 28 '19 at 14:02
  • ├── and └──. This is why it only works if all files match those patterns. So I wouldn't use this solution if you have other files inside image_sequence or other image.xxxx.jpg files in other directories. – Freddy May 28 '19 at 14:03
  • One last doubt. I want to replace ├── and └── to something simpler. Say |- and L. Because my shell is not printing it well. How can I do that? – Santosh Kumar May 29 '19 at 06:07
  • Well, I see there's an option for --charset which take ascii or unicode. Can you please modify your answer with that? – Santosh Kumar May 29 '19 at 06:14
  • With the ascii option it's tree --charset=ascii | sed '/|-- image\.[0-9]\+\.jpg/d; s/\(\-- image.)[0-9]+(.jpg)/\1####\2/'` – Freddy May 29 '19 at 07:48
  • Nope! That prints out all the images. Not even ####ing. – Santosh Kumar May 29 '19 at 09:01
  • Works for me using tree v1.7.0. With ascii I get prefixes |-- and \--which are matched by the abovesed`. If it doesn't match it will of course change nothing. – Freddy May 29 '19 at 09:35
1

You could replace the numerical parts of the sequential filenames with #s, using a sed expression (similar to the second one in Freddy's answer). uniq can then remove the duplicate lines:

tree | sed 's/\.[0-9]\+\.jpg/.####.jpg/g' | uniq

This will still leave two entries for the images (because the final line uses a different symbol in the tree-drawing part), but it has still trimmed the list down to a manageable length:

.
|-- directory1
|   `-- image_sequence
|       |-- image.####.jpg
|       `-- image.####.jpg
`-- directory2
    |-- someanotherfile.ext2
    `-- somefile.ext
JigglyNaga
  • 7,886