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From: per@erix.ericsson.se (Per Hedeland)
Newsgroups: comp.unix.shell
Subject: Re: Help needed with conditional statement for alias in csh
Message-ID: <1990Sep18.223605.29379@eua.ericsson.se>
Date: 18 Sep 90 22:36:05 GMT
References: <6929.26ed0b53@uwovax.uwo.ca> <6932.26ed237f@uwovax.uwo.ca> <26553@mimsy.umd.edu>
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In article <26553@mimsy.umd.edu> chris@mimsy.umd.edu (Chris Torek) writes:
>In article <6932.26ed237f@uwovax.uwo.ca> miller@uwovax.uwo.ca
>>if ( { test -s /usr/spool/mail/miller } ) then; echo "" ; echo "New mail" ;\
>> echo "" ; endif

>This is the C shell we are talking about.  Do not expect anything
>resembling sanity.

Quite. Following the eternal wisdom of the net, I have learned not only
"if you want to do a non-trivial csh script, use sh" but also "if you want
to do a non-trivial csh command, use sh". Thus, a working one-liner could be:

sh -c 'if test -s /usr/spool/mail/miller; then echo ""; echo "New mail"; echo ""; fi'

However, turning this into an alias with csh's idea of quoting is awkward if
at all possible, and you might just as well make it a script. Actually,
IMHO the best solution is to use the other conditional construct, that
happens to be common to sh and csh, and apparently unbroken in the latter:

test -s /usr/spool/mail/miller && (echo ""; echo "New mail"; echo "")

or as an alias:

alias mailtest 'test -s /usr/spool/mail/miller && (echo ""; echo "New mail"; echo "")'

--Per Hedeland
per@erix.ericsson.se  or
per%erix.ericsson.se@uunet.uu.net  or
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