Initial commit

zip_images_resize.sh

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+#!/bin/bash
+#
+# zip_images_resize Resizing large JPGs in ZIPs
+# Based on: https://shkspr.mobi/blog/2016/12/converting-rar-to-zip-in-linux/
+#
+# Usage: xxx.sh file [file ...]
+
+echo "Resizing large JPGs in ZIPs"
+
+# Use RAM disk for temporary files.
+WORKDIR="/dev/shm/"
+
+for INFILE in "$@"; do
+    # Absolute path to old file
+    #OLDFILE=`realpath "${INFILE}"`
+    OUTFILE="${INFILE%.zip}-compress.zip"
+
+    if [ ! -e "${OUTFILE}" ]; then
+        rm "${OUTFILE}"
+    fi
+    # Set name for the temp dir. This directory will be created under WORKDIR
+    TEMPDIR=`mktemp -p "$WORKDIR" -d`
+
+    # Create a temporary folder for unRARed files
+    echo "Extracting $INFILE"
+    
+    # extract files from zip
+    unzip  "$INFILE"  -d "$TEMPDIR" # -j to junk directories
+
+    # resize
+    #convert '${TEMPDIR}/*.jpg' -set filename:fn '%[basename]' -resize 2800000@@\> -sampling-factor 4:2:0 -strip -quality 85% -colorspace RGB '%[filename:fn].jpg'
+
+    pushd "$TEMPDIR"
+    ~/images_resize.sh
+    popd
+
+    # Zip the files with no compression
+    7z a -tzip -mx=0 "$OUTFILE" "${TEMPDIR}/*"
+
+    if [ $? -ne 0 ]; then
+        echo Exiting
+        exit 1
+    fi
+
+
+    # Alternative. MUCH SLOWER, but better compression
+    # 7z a -mm=Deflate -mfb=258 -mpass=15 -r "$NEWNAME" *
+
+    # Preserve file modification time
+    touch -r "$INFILE" "$OUTFILE"
+    rm "$INFILE"
+    mv "$OUTFILE" "$INFILE"
+
+    # Delete the temporary directory
+    rm -r "$TEMPDIR"
+
+    # OPTIONAL. Safe-remove the old file
+    #gio trash "$OLDFILE"
+
+done
+
+echo "Conversion Done"