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@@ -22,3 +22,47 @@ sudo tar --create --gzip --file bck_var_log.tgz --verbose /var/log
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systemctl list-units --state=failed
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```
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+## Merge photos from others
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+
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+Let's assume different people took pictures with format like `IMG_YYYYMMDD_hhmmss[suffixe].jpg` e.g. `IMG_20220713_210605__01.jpg`.
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+
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+If you want to mix photos while keeping chronological order in viewers, you have to rename them in order to sort them alphabetically by date.
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+
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+Use the command below to make every file start by `YYYYMMDD_hhmmss`.
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+
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+On Ubuntu, you have two different utilities : `rename.ul` making simple replacements, and `rename` working with regex.
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+
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+### Add a name suffixe
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+
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+`p1.jpg` -> `p1_suffixe.jpg`
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+
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+```sh
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+rename.ul '.jpg' '_suffixe.jpg' *
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+```
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+
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+### Replace strange chars
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+
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+`20220711_181620~2.jpg` -> `20220711_181620_2.jpg`
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+
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+```sh
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+rename.ul '~' '_' *.jpg
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+rename.ul ')' '' *.jpg
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+rename.ul '(' '_' *.jpg
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+```
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+
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+### Device to end
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+
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+`CANON_20220711_181620.jpg` -> `20220711_181620_IMG_CANON.jpg`
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+
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+```sh
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+rename 's/(\w+)_(\d{8}_.*)\./$2_IMG_$1./' *.jpg
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+```
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+
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+### Device and type to end
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+
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+`CANON_IMG_20220713_210605__01.jpg` -> `20220713_210605__01_IMG_CANON`
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+`SAM_VID_20220713_210605__01.mp4` -> `20220713_210605__01_VID_SAM.mp4`
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+
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+```sh
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+rename 's/(\w+)_(\w{3})_(\d{8}_.*)\./$3_$2_$1/\.' *
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+```
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