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Full Discussion: Find associated strings in a bash shell script
Top Forums Shell Programming and Scripting Find associated strings in a bash shell script Post 302545180 by Sofie on Sunday 7th of August 2011 07:14:54 AM
Old 08-07-2011
Find associated strings in a bash shell script
Hi together,
unfortunately I am not a shell script guru - the following might touch
the depths of awk, substr, split, regexps, where I am still fighting with - but as always the boss needs a fast solution :-(
So: I have the following USER/PASSWORD-installation-config-file, from where I want to read out the BELONGING TOGETHER user/passwords pairs to postprocess them in an sqlplus command to test if those users have already an account on the database:
Code:
Text1.admin.user=Hans
Text1.admin.password=Dampf

text1.access.user=Klaus
text1.access.password=Krampf

text2.admin.user=Willi
text2.admin.password=stumpf

text2.access.user=heiner
text2.access.password=keiner

text3.admin.user=reiner
text3.admin.password=nocheiner

text3.access.user=thomas
text3.access.password=owas

text4.admin.user=kalli
text4.admin.password=malli

text4.access.user=sack
text4.access.password=mack

Conditions here are:
=> always the same in the strings is "access.user=<username>" (resp. "admin.user=<username>")
=> always the same in the strings is also "access.password=<passwort>" (resp. "admin.passwort=<passwort>")
=> for a belonging together pair for example "admin.user/admin.password" the preceding text (for example "text4") is always the same (the same for the accompanying "access user")
=> the exact text-prefixes I don't know at the time of the shell script run (I know only that they are the same for a belonging together pair of user-password; otherwise I could go there with an exaxt grep on the prefix text and split afterwards with awk -F\= .... )
=> of course there could be also more lines than these examples; so I have to search what pairs are belonging together, according to the prefix text, but how :-) ?
=> the lines could also stand disordered
=> So as an OUTPUT FILE I would need only the belonging together
user<blank>password pairs regardless if it is admin or access user, must also not be "ordered" necessarily, but with the belonging together user/password pairs:
Code:
Hans Dampf
Klaus Krampf
....
sack mack

For me (still :-) the algorithmic difficulty is, that I don't want to bring mistakenly
for example the "text3.access.user" with the "text1.access.password" together, but the pairs with the same text prefix :-)

Now I hope, that I did not describe my problem to extensive and that it can be understood.
For a quick help I would be very thankful :-)
Last edited by fpmurphy; 08-07-2011 at 11:23 AM..
 

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LEARN ABOUT XFREE86

checkbashisms

CHECKBASHISMS(1)					      General Commands Manual						  CHECKBASHISMS(1)

NAME

       checkbashisms - check for bashisms in /bin/sh scripts

SYNOPSIS

       checkbashisms script ...
       checkbashisms --help|--version

DESCRIPTION

       checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
       of bashisms.  It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.

       Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported  by  POSIX";
       this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.

       In  cases  where  POSIX	and  Debian  Policy  disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
       options for stricter checking.

OPTIONS

       --help, -h
	      Show a summary of options.

       --newline, -n
	      Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)

       --posix, -p
	      Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).

       --force, -f
	      Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
	      to be a shell wrapper).

       --extra, -x
	      Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
	      tive which may be ignored.  For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.

       --version, -v
	      Show version and copyright information.

EXIT VALUES

       The exit value will be 0 if no possible bashisms or other problems were detected.  Otherwise it will be the sum of the following error val-
       ues:

       1      A possible bashism was detected.

       2      A file was skipped for some reason, for example, because it was unreadable or not found.	The warning message will give details.

SEE ALSO

       lintian(1).

AUTHOR

       checkbashisms  was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
       Julian Gilbey <jdg@debian.org>.

DEBIAN
								 Debian Utilities						  CHECKBASHISMS(1)
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