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Full Discussion: cat files
Top Forums UNIX for Dummies Questions & Answers cat files Post 302167554 by sandeep78 on Thursday 14th of February 2008 07:52:01 PM
Old 02-14-2008
cat files

Hi,

I was a typical Windows guy. Like to do things just by clicking my mouseSmilie. I got a new job now...where they are big on unix.
I am trying to wet my fingures now with unix. Haven't taken the dive yet.

I am trying to find a solution for this problem.
Please help me with some ideas.

Now the problem:
For ex: I have 6 files.
input_1.txt
input_2.txt
input_3.txt
input_4.txt
input_5.txt
input_6.txt

I want to write a script to concat the files on the parameter I pass to the script. Say If I pass parameter 2 to the script.
It should do this....
cat input_1.txt input_2.txt input_3.txt > input_1.txt
cat input_4.txt input_5.txt input_6.txt > input_2.txt

So, If I pass 3 to the script.
It should do this....
cat input_1.txt input_2.txt > input_1.txt
cat input_3.txt input_4.txt > input_2.txt
cat input_5.txt input_6.txt > input_3.txt

And the initial files I have can be dynamic....one day...I may have 20 or 30 files. Could be 25 (odd) too. The script should be dynamic enough.
I hope...my problem is clear enough for you.

Thanks for all your time.
-Sandeep
 

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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 /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
gzip(1), gznew(1), gzmore(1), gzcmp(1), gzforce(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
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. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgzip | +--------------------+-----------------+ |Interface Stability | External | +--------------------+-----------------+ NOTES
Source for gzip is available in the SUNWgzipS package. GZEXE(1)
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