Update cheatsheets

linux/sqfstar

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sqfstar
+
+> Create a squashfs filesystem from a tar archive.
+> More information: <https://manned.org/sqfstar>.
+
+- Create a squashfs filesystem (compressed using `gzip` by default) from an uncompressed `tar` archive:
+
+`sqfstar {{filesystem.squashfs}} < {{archive.tar}}`
+
+- Create a squashfs filesystem from a `tar` archive compressed with `gzip`, and [comp]ress the filesystem using a specific algorithm:
+
+`zcat {{archive.tar.gz}} | sqfstar -comp {{gzip|lzo|lz4|xz|zstd|lzma}} {{filesystem.squashfs}}`
+
+- Create a squashfs filesystem from a `tar` archive compressed with `xz`, excluding some of the files:
+
+`xzcat {{archive.tar.xz}} | sqfstar {{filesystem.squashfs}} {{file1 file2 ...}}`
+
+- Create a squashfs filesystem from a `tar` archive compressed with `zstd`, excluding files ending with `.gz`:
+
+`zstdcat {{archive.tar.zst}} | sqfstar {{filesystem.squashfs}} "{{*.gz}}"`
+
+- Create a squashfs filesystem from a `tar` archive compressed with `lz4`, excluding files matching a regular expression:
+
+`lz4cat {{archive.tar.lz4}} | sqfstar {{filesystem.squashfs}} -regex "{{regular_expression}}"`