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| Commit | Line | Data |
|---|---|---|
| 3013fe88 NW |
1 | .TH GZEXE 1 |
| 2 | .SH NAME | |
| 3 | gzexe \- compress executable files in place | |
| 4 | .SH SYNOPSIS | |
| 5 | .B gzexe | |
| 6 | [ name ... ] | |
| 7 | .SH DESCRIPTION | |
| 8 | The | |
| 9 | .I gzexe | |
| 10 | utility allows you to compress executables in place and have them | |
| 11 | automatically uncompress and execute when you run them (at a penalty | |
| 12 | in performance). For example if you execute ``gzexe /bin/cat'' it | |
| 13 | will create the following two files: | |
| 14 | .nf | |
| 15 | .br | |
| 16 | -r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat | |
| 17 | -r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~ | |
| 18 | .fi | |
| 19 | /bin/cat~ is the original file and /bin/cat is the self-uncompressing | |
| 20 | executable file. You can remove /bin/cat~ once you are sure that | |
| 21 | /bin/cat works properly. | |
| 22 | .PP | |
| 23 | This utility is most useful on systems with very small disks. | |
| 24 | .SH OPTIONS | |
| 25 | .TP | |
| 26 | .B \-d | |
| 27 | Decompress the given executables instead of compressing them. | |
| 28 | .SH "SEE ALSO" | |
| 29 | gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) | |
| caed0dfe NW |
30 | .SH CAVEATS |
| 31 | The compressed executable is a shell script. This may create some | |
| 32 | security holes. In particular, the compressed executable relies | |
| 33 | on the PATH environment variable to find | |
| 34 | .I gzip | |
| 35 | and some other utilities | |
| 36 | .I (tail, chmod, ln, sleep). | |
| 3013fe88 NW |
37 | .SH "BUGS" |
| 38 | .I gzexe | |
| 39 | attempts to retain the original file attributes on the compressed executable, | |
| 40 | but you may have to fix them manually in some cases, using | |
| 41 | .I chmod | |
| 42 | or | |
| 43 | .I chown. |