ipfs: add page (#2100)

pages/common/ipfs.md

@@ -0,0 +1,32 @@
+# ipfs
+
+> Inter Planetary File System.
+> A peer-to-peer hypermedia protocol to make the web faster, safer, and more open.
+
+- Add a file from local to the file system, pin it and print the relative hash:
+
+`ipfs add {{filename}}`
+
+- Add a folder and its files recursively from local to the file system and print the relative hash:
+
+`ipfs add -r {{folder}}`
+
+- Save a remote file and give it a name but not pin it:
+
+`ipfs get {{hash}} -o {{filename}}`
+
+- Pin a remote file locally:
+
+`ipfs pin add {{hash}}`
+
+- Display pinned files:
+
+`ipfs pin ls`
+
+- Unpin a file from the local storage:
+
+`ipfs pin rm {{hash}}`
+
+- Remove unpinned files from local storage:
+
+`ipfs repo gc`