These scripts write the time and date from the EXIF date of an image, as text onto that image, and scales the image into a smaller one. And this for a all the images in a dir.

This is done via one of these scripts:

1. timestamp_files.sh, to add a timestamp from the EXIF data to all the image in the input dir and write output to the output dir.
2. timestamp_file.sh, does the same as 'timestamp_files.sh', but only for 1 file and needs to be called with cli variables.
3. timesstamp_parallel.sh, does the same as 'timestamp_files.sh', but only in parallel in stead of sequential. Makes use of 'timestamp_file.sh'.
4. timestamp-rescale.sh, to scale all the images in the input dir into a smaller images in the output dir..
5. combine-tiemstamp-rescale.sh, runs first the timestamp and then the rescale.

These scripts is using:

1. 'convert' and 'identify', which is part of 'imagemagick'.
2. the font Roboto, which you can replace in the script by another.
3. Part of every GNU ecosystem:
4. 'bash' (for running script).
5. 'date' function/application.
6. 'echo' (for overal usage).
7. 'tr', 'cut' (for date format).
8. 'grep', 'ls', 'wc' (for progressbar).

1. [V] count input files
2. [V] count timestamped files
3. [V] count scaled files
4. [V] start, stop, duration time feedback
5. [-] optimize scale script to use parallelization
6. [-] run renamejpg from the combine script on the input file directory
7. [-] if scaled/timestamped dir are with files, by default rename dir (overwrite with cli flag)

You need to install imagemagick.

• sudo apt install imagemagick
• sudo apt install parallel

• convert logo: logo.gif
• convert -version
• identify -version

• fc-list | grep -i arial
• convert -list font|grep Liberation-Sans

1. https://legacy.imagemagick.org/Usage/annotating
2. https://legacy.imagemagick.org/Usage/draw/#annotate
3. https://legacy.imagemagick.org/script/command-line-options.php?#annotate

1. http://www.imagemagick.org/script/command-line-processing.php#geometry

1. https://github.com/ImageMagick/ImageMagick
2. https://techpiezo.com/linuxinstall-imagemagick-in-ubuntu-20-04-lts

1. https://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-5.html
2. https://tldp.org/LDP/abs/html/varassignment.html
3. https://www.cyberciti.biz/faq/bash-loop-over-file
4. https://linuxize.com/post/bash-concatenate-strings
5. https://en.wikibooks.org/wiki/Cut
6. https://www.geeksforgeeks.org/date-command-linux-examples
7. https://www.cyberciti.biz/faq/check-if-a-directory-exists-in-linux-or-unix-shell
8. https://www.cyberciti.biz/faq/howto-check-if-a-directory-exists-in-a-bash-shellscript

1. https://stackoverflow.com/questions/238073/how-to-add-a-progress-bar-to-a-shell-script
2. https://stackoverflow.com/questions/12498304/using-bash-to-display-a-progress-indicator
3. https://stackoverflow.com/questions/38339434/making-simple-shell-progress-bar
4. https://stackoverflow.com/questions/23630501/how-to-progress-bar-in-bash

1. https://stackoverflow.com/questions/11307257/is-there-a-bash-command-which-counts-files

1. https://stackoverflow.com/questions/8903239/how-to-calculate-time-elapsed-in-bash-script

1. https://stackoverflow.com/questions/29058741/need-to-cropresize-300000-files-runtime-4-days-how-can-i-speed-up-my-bash
2. https://www.gnu.org/software/bash/manual/html_node/GNU-Parallel.html
3. https://www.gnu.org/software/parallel/parallel_tutorial.html
4. https://www.cyberciti.biz/faq/how-to-run-command-or-code-in-parallel-in-bash-shell-under-linux-or-unix/
5. https://saveriomiroddi.github.io/Running-shell-commands-in-parallel-via-gnu-parallel
6. https://unix.stackexchange.com/questions/103920/parallelize-a-bash-for-loop
7. https://unix.stackexchange.com/questions/101632/running-thousands-of-curl-background-processes-in-parallel-in-bash-script
8. https://unix.stackexchange.com/questions/575327/can-gnu-parallel-execute-a-bash-script-25000-times-per-seconds-and-parallel-proc
9. https://opensource.com/article/18/5/gnu-parallel
10. https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1

1. https://ubuntuforums.org/showthread.php?t=1235238
2. https://legacy.imagemagick.org/discourse-server/viewtopic.php?t=20213
3. https://legacy.imagemagick.org/discourse-server/viewtopic.php?t=9155
4. https://stackoverflow.com/questions/51922126/how-to-format-date-and-time-with-imagemagicks-identify-utility
5. https://stackoverflow.com/questions/26654709/extract-exif-data-as-text-using-imagemagick

1. https://stackoverflow.com/questions/8707694/batch-resize-images-into-new-folder-using-imagemagick
2. https://askubuntu.com/questions/135477/how-can-i-scale-all-images-in-a-folder-to-the-same-width
3. https://askubuntu.com/questions/1068850/resize-multiple-images-with-imagemagick-from-a-folder-to-other-and-keep-the-nam
4. https://gordonlesti.com/imagemagick-resize-all-images-in-a-directory
5. https://legacy.imagemagick.org/Usage/resize/#sample
6. https://askubuntu.com/questions/135477/how-can-i-scale-all-images-in-a-folder-to-the-same-width
7. https://askubuntu.com/questions/135477/how-can-i-scale-all-images-in-a-folder-to-the-same-width

1. https://askubuntu.com/questions/673615/imagemagick-convert-command-cannot-use-fonts
2. https://legacy.imagemagick.org/Usage/fonts/
3. https://codereview.stackexchange.com/questions/88516/bash-script-that-checks-if-font-is-installed-and-installs-it-if-necessary

1. https://techstreams.medium.com/git-google-drive-simple-git-host-3a84db4fc1fd
2. https://github.com/labbots/google-drive-upload
3. https://towardsdatascience.com/uploading-files-to-google-drive-directly-from-the-terminal-using-curl-2b89db28bb06

• identify -format '%[EXIF:*]' image.jpg

• datetime=$(identify -format "%[EXIF:DateTime]" P1050001.JPG | tr " " "_" | tr ":" "-")

• inname=$(identify -format "%t" P1050001.JPG)

• convert P1050001.JPG ${inname}_${datetime}.jpg

• :: Add the date the photo was taken to the image

• convert %1 -pointsize 20 -fill black -gravity northwest ^

• -annotate +0+0 "Date: %DateTime%" "%~p1date_%~n1.jpg"

• convert fotosin\*.jpg -font Arial -pointsize 32 -fill white -annotate +30+50 %[exif:DateTimeOriginal] \fotosout

• convert -define jpeg:size=250x200 *.jpg -thumbnail 250x200^ -gravity center -extent 250x200 crop/thumbnail-%d.jpeg
• for i in `ls -1 *jpg`; do convert -resize 50% $i "thumb_$i"; done
• convert image_file.png -resize 300x300 image_file_resize.png
• convert "images/*.jpg[250x]" -set filename:base "%[basename]" "images/new_folder/%[filename:base].jpg"

CC BY-SA 4.0 https://github.com/edzob/photo_scale_timestamp_script