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chore(kb): improve tagging-related commands
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Michele Cereda
@@ -1,42 +1,85 @@
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# ExifTool
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Platform-independent Perl library and command-line application for reading, writing and editing meta information in a wide variety of files.<br/>
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Platform-independent Perl library and command-line application for reading, writing and editing meta information in a
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wide variety of files.<br/>
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It supports many different metadata formats as well as the maker notes of many digital cameras.
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## Table of contents <!-- omit in toc -->
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1. [TL;DR](#tldr)
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1. [Further readings](#further-readings)
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1. [Sources](#sources)
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1. [Sources](#sources)
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## TL;DR
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<details>
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<summary>Setup</summary>
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```sh
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# Installation.
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brew install 'exiftool'
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sudo zypper in 'exiftool'
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```
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</details>
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<details>
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<summary>Usage</summary>
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```sh
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# Show metadata in files.
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exiftool 'path/to/image-1.jpg' 'path/to/image-n.jpg'
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# Only show specific metadata tags.
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# Tags selection is case *in*sensitive.
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# Spaces in tags must be removed from the selector.
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exiftool -'tagName' 'path/to/image-1.jpg'
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# Add or edit metadata tags.
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exiftool -author='linuxConfig' -title='Linux penguin' 'image.jpg'
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# Remove metadata tags.
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exiftool -author='' -title= 'image.jpg'
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exiftool -all='' 'image.jpg'
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```
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</details>
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<details>
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<summary>Real world use cases</summary>
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```sh
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# It would be the same to use '-imageheight', '-ImageHeight' or '-imageHeight'.
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exiftool -ImageHeight 'Downloads/meme.png'
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# Print formatted date/time for all JPG files in the current directory.
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exiftool -d "%r %a, %B %e, %Y" -DateTimeOriginal -S -s *'.jpg'
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# Extract all GPS positions from an AVCHD video.
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exiftool -ee -p "$gpslatitude, $gpslongitude, $gpstimestamp" 'a.m2ts'
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# Recursively extract JPG images from Canon CRW files in the current directory.
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# Add 'C<_JFR.jpg>' to the name of the output JPG files.
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exiftool -b -JpgFromRaw -w '_JFR.jpg' -ext 'CRW' -r '.'
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```
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</details>
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## Further readings
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- [Website]
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- [Github]
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## Sources
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All the references in the [further readings] section, plus the following:
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### Sources
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- [Top 5 ways to view and edit metadata]
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<!--
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References
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Reference
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═╬═Time══
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-->
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<!-- Upstream -->
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[github]: https://github.com/exiftool/exiftool
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[website]: https://exiftool.org/
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<!-- In-article sections -->
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[further readings]: #further-readings
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<!-- Others -->
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[top 5 ways to view and edit metadata]: https://daminion.net/articles/tips/top-5-ways-to-view-and-edit-metadata/
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@@ -1,10 +1,8 @@
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# `getfattr`
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## Table of contents <!-- omit in toc -->
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1. [TL;DR](#tldr)
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1. [Further readings](#further-readings)
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1. [Sources](#sources)
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1. [Sources](#sources)
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## TL;DR
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@@ -13,6 +11,9 @@
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apt install 'attr'
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dnf install 'attr'
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# Get values for all attributes.
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getfattr -d 'path/to/file.1' … 'path/to/file.N'
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# Get values for specific extended attributes.
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getfattr -n 'name' 'path/to/file.1' … 'path/to/file.N'
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```
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@@ -21,20 +22,16 @@ getfattr -n 'name' 'path/to/file.1' … 'path/to/file.N'
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- [`setfattr`][setfattr]
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## Sources
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All the references in the [further readings] section, plus the following:
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### Sources
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- [`man` page][man page]
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- [Tag files in GNU/Linux]
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<!--
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References
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Reference
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═╬═Time══
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-->
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<!-- In-article sections -->
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[further readings]: #further-readings
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<!-- Knowledge base -->
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[setfattr]: setfattr.md
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[tag files in gnu/linux]: tag%20files.md
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@@ -1,7 +1,5 @@
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# The `touch` command
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## Table of contents <!-- omit in toc -->
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1. [TL;DR](#tldr)
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## TL;DR
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@@ -11,4 +9,14 @@
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# End the time with 'Z' to specify the new time is UTC instead of local time.
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touch -cd '2017-08-15T13:28:42' '20170815_132842.mp4'
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touch -cd '2017-08-15T12:28:42Z' '20170815_132842.mp4'
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# Change only the access time.
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touch -ca -t '201801211200.10' 'file.txt'
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touch -c --time=access -t '201801211200.10' 'file.txt'
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touch -c --time=atime -d '2018-01-21T12:00:10' 'file.txt'
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# Change only the modification time.
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touch -cm -t '201611161200.10' 'file.txt'
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touch -c --time=modify -t '201611161200.10' 'file.txt'
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touch -c --time=mtime -d '2016-11-16T12:00:10' 'file.txt'
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```
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