Re: procmailrc syntax

On 2016-10-28 22:07, Zhiliang Hu wrote:
> Although I used procmail for so long I never figure out what kind of
> "script" rules it follows.  For example in one of my rc script I try to
> calculate a list file ("dist"):
>
>   DISTCOUNT=3D`grep -cv '^(' dist` -1
>
> the calculation part fails, end up in the log:
>
>   procmail: Skipped "-1"
>
> How can I get over this without getting it to external script for a
> simple calculation like this?

Let's use a bit of procmail:

test.msg, is a file with some lines of text,
and 18 of them don't start with an X.

test.rc:
# - - - - - - - - - -
TESTCOUNT=3D`grep -vc '^X' test.msg`
LOG=3D"$TESTCOUNT - 1 =3D "

:0
*$ $TESTCOUNT^0
*          -1^0
{ TESTCOUNT=3D$=3D }

LOG=3D"$TESTCOUNT
"
# - - - - - - - - - -


# And then run it:

$ procmail -m test.rc < /dev/null
18 - 1 =3D 17

-- Greetings, Ruud