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Full Discussion: Unix File operations
Top Forums Shell Programming and Scripting Unix File operations Post 302165236 by nivas on Thursday 7th of February 2008 06:25:12 AM
Old 02-07-2008
Unix File operations

Hi,

Iam having the two files as follows:

file1:

ASQWEDFR09876543121234512
POIUYTREW09876512345676788
ZXCVBNMKS1209888888888888

file2:
ASQWEDFR09876543121234516 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
CXADFGTU09876543121234789 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
KLOPIUYRE09876541234234516 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
ZXSDCVFG09876512345634516 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----


i WANT TO update the contents in file1 to file2 and remove the other lines.

example.:

ASQWEDFR09876543121234516 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
POIUYTREW0987651234567678 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
ZXCVBNMKS1209888888888888 asdcvfgbtg@abc.com 0000000-90-1239--2008 8990----
nivas
 

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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), 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
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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