Move pages under tldr, lint run.sh, update docs

tldr/truncate

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# truncate
+
+> Shrink or extend the size of a file to the specified size.
+> More information: <https://www.gnu.org/software/coreutils/truncate>.
+
+- Set a size of 10 GB to an existing file, or create a new file with the specified size:
+
+`truncate --size {{10G}} {{filename}}`
+
+- Extend the file size by 50 MiB, fill with holes (which reads as zero bytes):
+
+`truncate --size +{{50M}} {{filename}}`
+
+- Shrink the file by 2 GiB, by removing data from the end of file:
+
+`truncate --size -{{2G}} {{filename}}`
+
+- Empty the file's content:
+
+`truncate --size 0 {{filename}}`
+
+- Empty the file's content, but do not create the file if it does not exist:
+
+`truncate --no-create --size 0 {{filename}}`