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Full Discussion: improving my script
Top Forums Shell Programming and Scripting improving my script Post 53391 by bcheaib on Wednesday 14th of July 2004 09:59:44 AM
Old 07-14-2004
scpshow output

the output is C300090B901900096393111222

i am calling the script #> ksh scritpname and it works...




Quote:
Originally posted by zazzybob
Replacing
Code:
for sub in `cat /tmp/sublist `
do
  ...
done

with
Code:
while read sub
do
  ...
done < /tmp/sublist

may well speed up the processing of the loop and avoid a useless use of cat....

If you're processing 400,000 records it's going to be slow whatever you do - you'd be better off writing it in C if you'll be running it often.


Cheers
ZB
 

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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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