Move pages back into a "pages" folder

pages/common/tar.md

@@ -0,0 +1,20 @@
+# tar
+
+> Archiving utility
+> Optional compression with gzip / bzip
+
+- create an archive from files
+
+`tar cf {{target.tar}} {{file1 file2 file3}}`
+
+- create a gzipped archive
+
+`tar czf {{target.tar.gz}} {{file1 file2 file3}}`
+
+- extract an archive in a target folder
+
+`tar xf {{source.tar}} -C {{folder}}`
+
+- extract a gzipped archive in the current directory
+
+`tar xzf {{source.tar.gz}}`