pr: add page (#3412)

pages/common/pr.md

@@ -0,0 +1,28 @@
+# pr
+
+> Paginate or columnate files for printing.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/pr-invocation.html>.
+
+- Print multiple files with a default header and footer:
+
+`pr {{file1}} {{file2}} {{file3}}`
+
+- Print with a custom centered header:
+
+`pr -h "{{header}}" {{file1}} {{file2}} {{file3}}`
+
+- Print with numbered lines and a custom date format:
+
+`pr -n -D "{{format}}" {{file1}} {{file2}} {{file3}}`
+
+- Print all files together, one in each column, without a header or footer:
+
+`pr -m -T {{file1}} {{file2}} {{file3}}`
+
+- Print, beginning at page 2 up to page 5, with a given page length (including header and footer):
+
+`pr +{{2}}:{{5}} -l {{page_length}} {{file1}} {{file2}} {{file3}}`
+
+- Print with an offset for each line and a truncating custom page width:
+
+`pr -o {{offset}} -W {{width}} {{file1}} {{file2}} {{file3}}`