Scanning paper documents is such a tedious task that I tend to lose concentration when doing it. And as a result I recently ended up with two PDF documents needing post-processing. In the worst case, the PDF consisted of three pages – one in the correct orientation, and two rotated 180\u00b0!<\/p>\n
As usual, there’s a Unix command to help out with that –\u00a0pdftk<\/em>. Specifically :-<\/p>\n \nThe interesting operation is contained within the cat 1 2-endS<\/em> which translates as copy the input page 1 to the output unaltered, and copy the remaining pages rotated 180\u00b0 (or “S”) to the output. This is of course only the tiniest fraction of what this tool can do. Scanning paper documents is such a tedious task that I tend to lose concentration when doing it. And as a result I recently ended up with two PDF documents needing post-processing. In the worst case, the PDF consisted of three pages – one in the correct orientation, and two rotated 180\u00b0! As usual, there’s a […]<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_share_on_mastodon":"0"},"categories":[226],"tags":[],"class_list":["post-2832","post","type-post","status-publish","format-standard","hentry","category-working-notes","category-226-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"share_on_mastodon":{"url":"","error":""},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p1f2KI-JG","_links":{"self":[{"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/posts\/2832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/really.zonky.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2832"}],"version-history":[{"count":3,"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/posts\/2832\/revisions"}],"predecessor-version":[{"id":2835,"href":"https:\/\/really.zonky.org\/index.php?rest_route=\/wp\/v2\/posts\/2832\/revisions\/2835"}],"wp:attachment":[{"href":"https:\/\/really.zonky.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/really.zonky.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/really.zonky.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\r\npdftk \\\r\n input-file.pdf \\\r\n cat 1 2-endS \\\r\n output out.pdf\r\n<\/pre>\n
\n <\/p>\n","protected":false},"excerpt":{"rendered":"