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Full Discussion: update executable file
Top Forums Programming update executable file Post 8865 by anent on Thursday 18th of October 2001 05:49:59 PM
Old 10-18-2001
Question update executable file

Hi All,
Is it possible to update an executable file created using cc or gcc compiler.
ie., very clearly
If i create a C program and execute it and an executable file a.out is created.
but the run time for the execution is around 30 minutes.
Is it possible to update that executable, if some small changes had been made to source code.
since the compiler takes 30 min. again to get the updated result.

I am not an expert in C. but this seems, hitting my mind for a long time...
Is there any way to achieve this or this is an Impossible task.

Thanks in Advance,
Anent
 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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