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Top Forums Shell Programming and Scripting Bash string variable manipulation Post 302358952 by Witty on Monday 5th of October 2009 09:18:11 AM
Old 10-05-2009
Bash string variable manipulation

In a bash script I've set a variable that is the directory name of where an executable lives.
Code:
the_dir=`dirname $which myscript`

which equates to something like "/path/to/dir/bin"

I need to cut that down to remove the "bin" so I now have "/path/to/dir/".

This sounds easy but as a complete novice I'm getting lost.
How do I do it and more importantly what is the best tool for this job so I can do a lot of reading?

Thanks.

Last edited by vgersh99; 10-05-2009 at 10:22 AM.. Reason: code tags, PLEASE!
 

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BZEXE(1)						      General Commands Manual							  BZEXE(1)

NAME
bzexe - compress executable files in place SYNOPSIS
bzexe [ name ... ] DESCRIPTION
The bzexe 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 ``bzexe /bin/cat'' it will create the following two files: -r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat -r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~ /bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that /bin/cat 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
bzip2(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 other utilities (tail, chmod, ln, sleep). BUGS
bzexe 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. BZEXE(1)
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