Merge pull request #152 from terminalforlife/master

Add to and Tweak Sheets

sheets/convert

@@ -1,37 +1,40 @@
-# Resize an image to a fixed width and proportional height:
+# convert
+# Image converter and manipulator
+
+# Resize an image to a fixed width and proportional height.
 convert original-image.jpg -resize 100x converted-image.jpg
 
-# Resize an image to a fixed height and proportional width:
+# Resize an image to a fixed height and proportional width.
 convert original-image.jpg -resize x100 converted-image.jpg
 
-# Resize an image to a fixed width and height:
+# Resize an image to a fixed width and height.
 convert original-image.jpg -resize 100x100 converted-image.jpg
 
-# Resize an image and simultaneously change its file type:
+# Resize an image and simultaneously change its file type.
 convert original-image.jpg -resize 100x converted-image.png
 
-# Resize all of the images within a directory, using a for loop:
+# Resize all of the images within a directory, using a for loop.
 for file in original/image/path/*; do
     convert "$file" -resize 150 converted/image/path/"$file"
 done
 
-# Make text annotation (text = Flower)
+# Make text annotation, which in this example is 'Flower'.
 convert flower.jpg -font courier -fill white -pointsize 20 -annotate +50+50 'Flower' flower_annotate1.jpg
 
-# Crop an image
+# Crop an image.
 convert flower.jpg -crop 128×128+50+50 flower_crop.jpg
 
-# Rotate an image
+# Rotate an image.
 convert flower.jpg -rotate 45 flower_rotate45.jpg
 
-# Add a border
+# Add a border around an image.
 convert -border 1x1 -bordercolor "#FFFFFF" image.png new-image.png
 
-# Convert PNG to JPEG (with 70% quality)
+# Convert PNG to JPEG, with 70% quality.
 convert -quality 70 image.png new_image.jpg
 
-# Apply vignette and grayscale effects to all JPGs in the CWD, using a for loop.
+# Apply vignette & grayscale effects to all JPGs in the CWD, using a for loop.
 for FILE in *.jpg; { convert -background black -colorspace gray -vignette 200x100 "$FILE" "$FILE"; }
 
-# Convert multiple images to PDF
+# Convert and combine multiple images to a single PDF.
 convert image1.png image2.jpg image3.bmp output.pdf

sheets/identify

@@ -1,6 +1,8 @@
 # identify
-#
-# describes the format and characteristics of one or more image files
+# Describes the format and characteristics of one or more image files.
 
-# show width and height of the image
-identify -format '%w %h' ${img}
+# Show width and height of the image. Multiple images can be provided.
+identify -format '%w %h' FILE
+
+# Display lots of meta-data in FILE.
+identify -verbose FILE

sheets/lsb_release

@@ -0,0 +1,12 @@
+# lsb_release
+# Print distribution-specific information
+
+# Output the current distribution's ID. In Debian/Ubuntu, you'll see this an
+# example of this command and these flags being used in the default GRUB
+# configuration file, found at '/etc/default/grub'.
+lsb_release -si
+
+# Output the current distribution's description. This should basically show
+# the full name and version of the description, minus the codename. For
+# example, in Ubuntu 18.04, the returned value is: Ubuntu 18.04.5 LTS
+lsb_release -sd