test with two conditions (OR) Post: 302262891

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Top Forums Shell Programming and Scripting test with two conditions (OR) Post 302262891 by chebarbudo on Saturday 29th of November 2008 01:25:15 PM

11-29-2008

Registered User

test with two conditions (OR)

Hi there,
I'm very surprised that I can't find this myself and I'm sorry to bother you with such a stupid question. I just want to write a test with one condition or another one. I want either the first argument to be equal to 'this' or the second argument to be equal to 'that'.

Code:

~$ cat test
(( $1='this' || $2='that' )) && echo test1 says ok
(( $1=='this' || $2=='that' )) && echo test2 says ok
[[ $1='this' || $2='that' ]] && echo test3 says ok
[[ $1=='this' || $2=='that' ]] && echo test4 says ok
~$ test wrong wrong
test: line 1: ((: wrong=this || wrong=that : attempted assignment to non-variable (error token is "=that ")
test2 says ok
test3 says ok
test4 says ok
~$ test this wrong
test: line 1: ((: this=this || wrong=that : attempted assignment to non-variable (error token is "=that ")
test2 says ok
test3 says ok
test4 says ok
~$ test wrong that
test: line 1: ((: wrong=this || that=that : attempted assignment to non-variable (error token is "=that ")
test2 says ok
test3 says ok
test4 says ok
~$ test this that
test: line 1: ((: this=this || that=that : attempted assignment to non-variable (error token is "=that ")
test2 says ok
test3 says ok
test4 says ok

To sum up those tests, first construct will never work, and other constructs will always return true.
Can you help me with that, I can't believe this can be hard!
Thanks in advance
Santiago

chebarbudo

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tag

tag(3tcl)                                                                                                                                tag(3tcl)

NAME

       tag - Manipulate tagged files

SYNOPSIS

       tag option ?arg arg ...?

DESCRIPTION

       The tag procedure provides a number of options for manipulating tagged files.

COMMANDS

       tag readfile filename

              Reads the file with the given filename and returns a list where each list element is a tag record, which is represented by a list of
              label-value pairs, or label-value-endlabel triples.

              The tag header is the first element returned.

       tag writefile filename list

              Takes a list in the format used internally in tcl programs for tagged data and writes it as a tagged file.

       tag extract list tests

              Takes a list in tagged format, and a list of conditions, and returns a new list in tagged format which contains  those  tag  records
              which match the conditions.

              The tests is a list of test items, each of which is a list of the form { labelname condition matchvalue }

              The conditions are

       ==     String equals

       !=     String not equal

       <=     Less than or equal

       -in    Is the test value a member of the list given as the matchvalue

       -contains
              Does the match value contain the test value as a case insensitive substring.

       -earlier
              Date earlier

       -later Date later - dates are in ISO format (yyyy-mm-dd [hh:mm:ss]).

       -exists
              Does the label exist in this record.

BUGS

       tag readfile reads the whole file into memory before turning it into a list.  Should be more memory efficient.

       The -earlier and -later comparisons require TCL8.3

AUTHOR

       John Lines (john@paladin.demon.co.uk)

                                                                   July 3, 2000                                                          tag(3tcl)