Dave, you are right but remember you are preaching to the crowd to whom the OS is everything. I know because I used to be like that too, until I realized the life is too short to constantly struggle with the OS when all you want to do is some basic thing like resize a photo.
[nemo@Sailfish ~]$ [nemo@Sailfish ~]$ cp Pictures/Camera/20160821_004.jpg . [nemo@Sailfish ~]$ identify 20160821_004.jpg 20160821_004.jpg JPEG 1920x1080 1920x1080+0+0 8-bit DirectClass 301KB 0.000u 0:00.000 [nemo@Sailfish ~]$ mogrify -geometry 190x100 20160821_004.jpg nexusback@toosa:~$ identify 20160821_004.jpg 20160821_004.jpg JPEG 178x100 178x100+0+0 8-bit DirectClass 8.98KB 0.000u 0:00.000 [nemo@Sailfish ~]$