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diff --git a/doc/tar2sqfs.1 b/doc/tar2sqfs.1 new file mode 100644 index 0000000..c546935 --- /dev/null +++ b/doc/tar2sqfs.1 @@ -0,0 +1,54 @@ +.TH TAR2SQFS "1" "June 2019" "tar2sqfs" "User Commands" +.SH NAME +tar2sqfs \- create a squashfs image from a tar archive +.SH SYNOPSIS +.B tar2sqfs +[\fI\,OPTIONS\/\fR...] \fI\,<sqfsfile>\/\fR +.SH DESCRIPTION +Read an uncompressed tar archive from stdin and turn it into a squashfs +filesystem image. + +The idea is to quickly and painlessly turn a tar ball into a squashfs +filesystem image, so existing tools that work with tar can be used for +squashfs. +.PP +Possible options: +.TP +\fB\-\-help\fR, \fB\-h\fR +Print help text and exit. +.TP +\fB\-\-version\fR, \fB\-V\fR +Print version information and exit. +.SH LIMITATIONS +Currently the tool can only process POSIX tar archives with pax extensions, so +you need to tell your tool that generates the tar ball to not use any other +extensions. + +For GNU tar, this can be done with the flag \fB\-\-posix\fR: +.IP +tar cf file.tar \-\-posix bin/ lib/ etc/ usr/ +.TP +Furthermore, hard links and sparse files are currently not supported. If any +unsupported section is encountered in a tar archive, the section is skipped and +a warning message is written to stderr. +.SH EXAMPLES +.TP +Turn an uncompressed tar archive into a squashfs image: +.IP +tar2sqfs rootfs.sqfs < rootfs.tar +.TP +Turn a gzip'ed tar archive into a squashfs image: +.IP +zcat rootfs.tar.gz | tar2sqfs rootfs.sqfs +.TP +Turn an LZMA2 compressed tar archive into a squashfs image: +.IP +xzcat rootfs.tar.xz | tar2sqfs rootfs.sqfs +.SH AUTHOR +Written by David Oberhollenzer. +.SH COPYRIGHT +Copyright \(co 2019 David Oberhollenzer +License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. +.br +This is free software: you are free to change and redistribute it. +There is NO WARRANTY, to the extent permitted by law. |