how to get the last word from file

how to get the last word from file

[Ned]

Hi list,
I am using the cal command to get current month. What I need for my shell script is how many days are there in the current month, that is, the last listed date for that month is that very number.
How can I get that number?
cal | tail -1
and then what?

Many thanks!
Ned

Re: how to get the last word from file

[Trevor Astrope]

Try something like this:

date +"%d" --date="`date +\"%b 1 1 month\"` 1 day ago"


There's probably a simpler way using the date command, but that should 
work.


Hth,

Trevor

On Tue, 29 Mar 2005, Ned wrote:

> Hi list,
> I am using the cal command to get current month. What I need for my shell script is how many days are there in the current month, that is, the last listed date for that month is that very number.
> How can I get that number?
> cal | tail -1
> and then what?
>
> Many thanks!
> Ned
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
>
>

Re: how to get the last word from file

[David Bruzos]

This command will do it on my system:
cal | tr ' ' '\n' | tail -n 2

I have to put 2 as arg for tail, because my cal command prints a blank line at the end...

DB

On Tue, Mar 29, 2005 at 12:17:43PM -0700, Ned wrote:
> Hi list,
> I am using the cal command to get current month. What I need for my shell script is how many days are there in the current month, that is, the last listed date for that month is that very number.
> How can I get that number?
> cal | tail -1
> and then what?
> 
> Many thanks!
> Ned
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

Re: how to get the last word from file

[Ari Moisio]

Hi!

   Quick & dirty:-)
echo $(cal) | tail -c 3


-- 
arimo

On Tue, 29 Mar 2005, Ned wrote:

> Hi list,
> I am using the cal command to get current month. What I need for my shell script is how many days are there in the current month, that is, the last listed date for that month is that very number.
> How can I get that number?
> cal | tail -1
> and then what?
>
> Many thanks!
> Ned
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
>

Re: how to get the last word from file

[Ned]

Sure it works--
but looks like Chinese to me...
"`...
1 day ago...
I'll study it.
Many thanks
By the way, anybody knows of a remote system where I can check the teraterm 
pro?
Those at school wouldn't let me get connected with anything other than the 
putty because of the security reasons; I need to ask them for a special 
permition to use this client, but I want to know how much better is it than 
the putty. Is it only telnet?


Thanks a lot!
Ned
----- Original Message ----- 
From: "Trevor Astrope" <astrope@tabbweb.com>
To: "Speakup is a screen review system for Linux." <speakup@braille.uwo.ca>
Sent: Tuesday, March 29, 2005 12:35 PM
Subject: Re: how to get the last word from file


> Try something like this:
>
> date +"%d" --date="`date +\"%b 1 1 month\"` 1 day ago"
>
>
> There's probably a simpler way using the date command, but that should 
> work.
>
>
> Hth,
>
> Trevor
>
> On Tue, 29 Mar 2005, Ned wrote:
>
>> Hi list,
>> I am using the cal command to get current month. What I need for my shell 
>> script is how many days are there in the current month, that is, the last 
>> listed date for that month is that very number.
>> How can I get that number?
>> cal | tail -1
>> and then what?
>>
>> Many thanks!
>> Ned
>> _______________________________________________
>> Speakup mailing list
>> Speakup@braille.uwo.ca
>> http://speech.braille.uwo.ca/mailman/listinfo/speakup
>>
>>
>
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

Re: how to get the last word from file

[Gregory Nowak]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

No, teraterm pro also supports ssh, though I'm not sure if it's both
ssh1 and ssh2, or just ssh1.

Greg


On Tue, Mar 29, 2005 at 01:00:36PM -0700, Ned wrote:
> Sure it works--
> but looks like Chinese to me...
> "`...
> 1 day ago...
> I'll study it.
> Many thanks
> By the way, anybody knows of a remote system where I can check the teraterm 
> pro?
> Those at school wouldn't let me get connected with anything other than the 
> putty because of the security reasons; I need to ask them for a special 
> permition to use this client, but I want to know how much better is it than 
> the putty. Is it only telnet?
> 
> 
> Thanks a lot!
> Ned

- -- 
web site: http://www.romuald.net.eu.org
gpg public key: http://www.romuald.net.eu.org/pubkey.asc
skype: gregn1
(authorization required, add me to your contacts list first)

- --
Free domains: http://www.eu.org/ or mail dns-manager@EU.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQFCSbbX7s9z/XlyUyARAtOyAKCfHZrPdsB5drv2ZvKfx/2ga/LXewCguvPI
QcjO0Fu8c2JURAtRKFrPXig=
=KNQA
-----END PGP SIGNATURE-----

Re: how to get the last word from file

[Ned]

... provided that on most systems the last 3 bytes contain the last date of 
a month.
What about this approach:
cal | tail +3 | wc -c
Many ways to do this...

Many Thanks.
Ned
----- Original Message ----- 
From: "Ari Moisio" <arimo@netsonic.fi>
To: "Speakup is a screen review system for Linux." <speakup@braille.uwo.ca>
Sent: Tuesday, March 29, 2005 12:55 PM
Subject: Re: how to get the last word from file


> Hi!
>
>   Quick & dirty:-)
> echo $(cal) | tail -c 3
>
>
> -- 
> arimo
>
> On Tue, 29 Mar 2005, Ned wrote:
>
>> Hi list,
>> I am using the cal command to get current month. What I need for my shell 
>> script is how many days are there in the current month, that is, the last 
>> listed date for that month is that very number.
>> How can I get that number?
>> cal | tail -1
>> and then what?
>>
>> Many thanks!
>> Ned
>> _______________________________________________
>> Speakup mailing list
>> Speakup@braille.uwo.ca
>> http://speech.braille.uwo.ca/mailman/listinfo/speakup
>>
>
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup 

Re: how to get the last word from file

[Ralph W. Reid]

On Tue, Mar 29, 2005 at 12:17:43PM -0700, Ned wrote:
> Hi list,
> I am using the cal command to get current month. What I need for my shell script is how many days are there in the current month, that is, the last listed date for that month is that very number.
> How can I get that number?
> cal | tail -1
> and then what?
> 
> Many thanks!
> Ned

The above command line will produce a blank line because the last line
produced by `cal` is a blank line.  If you are looking specifically
for days in the current month (as opposed to a more general
last-word-in file search), the following is one of several ways to
produce it:

if [ `cal | grep -c 31` == 1 ];
then
echo 31
elif [ `cal | grep -c 30` == 1 ];
then
echo 30
elif [ `cal | grep -c 29` == 1 ];
then
echo 29
elif [ `cal | grep -c 28` == 1 ];
then
echo 28
else
echo Cal did not produce a calendar.
fi

HTH, and have a _great_ day!

-- 
Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
rreid@sunset.net  http://personalweb.sunset.net/~rreid
...passing through The City of Internet at the speed of light!
_PI = 4 * ARCTAN (1)

Re: how to get the last word from file

[Chuck Hallenbeck]

Or else you do this:

cal | tail -c 4

Chuck




-- 
The Moon is Waning Gibbous (73% of Full)
"Things are in the saddle, and they ride mankind." Ralph Waldo Emerson
Visit my download site at http://www.mhcable.com/~chuckh

Re: how to get the last word from file

[Ned]

This is yet to be seen!
Wow, what a syntax.
semicolon at the end of if, elif, then,
and the most apealing is that fi at the end.
Thanks a lot!
It's a totally new stuff to me.
Is there a case structure in bash? That would fit here just perfectly.

Many thanks!
Ned
----- Original Message ----- 
From: "Ralph W. Reid" <rreid@sunset.net>
To: "Speakup is a screen review system for Linux." <speakup@braille.uwo.ca>
Sent: Wednesday, March 30, 2005 1:16 PM
Subject: Re: how to get the last word from file


> On Tue, Mar 29, 2005 at 12:17:43PM -0700, Ned wrote:
>> Hi list,
>> I am using the cal command to get current month. What I need for my shell 
>> script is how many days are there in the current month, that is, the last 
>> listed date for that month is that very number.
>> How can I get that number?
>> cal | tail -1
>> and then what?
>>
>> Many thanks!
>> Ned
>
> The above command line will produce a blank line because the last line
> produced by `cal` is a blank line.  If you are looking specifically
> for days in the current month (as opposed to a more general
> last-word-in file search), the following is one of several ways to
> produce it:
>
> if [ `cal | grep -c 31` == 1 ];
> then
> echo 31
> elif [ `cal | grep -c 30` == 1 ];
> then
> echo 30
> elif [ `cal | grep -c 29` == 1 ];
> then
> echo 29
> elif [ `cal | grep -c 28` == 1 ];
> then
> echo 28
> else
> echo Cal did not produce a calendar.
> fi
>
> HTH, and have a _great_ day!
>
> -- 
> Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
> rreid@sunset.net  http://personalweb.sunset.net/~rreid
> ...passing through The City of Internet at the speed of light!
> _PI = 4 * ARCTAN (1)
>
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

Re: how to get the last word from file

[Ralph W. Reid]

As you have probably seen, others have posted _much_ simpler solutions
to this problem than I did.  There is a `case` statement in bash, but
you would have to determine how to check for different values while
performing only a single `cal` command.  See your favorite man page
for bash by running `man bash` on your favorite linux box--it is big,
but there is a lot of good stuff in there.

As a side note, you might be able to use a simple word count to get
the days in any given month since `cal` should always produce the same
headings, and then a range of numbers ranging from 28 through 31
depending on the month and whether or not the month is February during
a leap year.  The following seems to work, and uses the math feature
available in `bash` to assign the result to a variable, and then echos
the result for output:

let totaldays=`cal | wc -w`-9
echo $totaldays

There should always be 9 words of header info produced by `cal`, so
subtracting the count of the words in the header (9) leaves the number
of dates displayed for the month.  I might have recognized this way of
producing the total days if I had slept a little before posting the
somewhat lengthy and complicated solution shown below--maybe next time
I will not be so hasty with my post if it seems a little messy
again;).

Just one more of many possible ways of producing the output you seem
to be looking for :) .  HTH, and have a _great_ day!

On Wed, Mar 30, 2005 at 03:48:02PM -0700, Ned wrote:
> This is yet to be seen!
> Wow, what a syntax.
> semicolon at the end of if, elif, then,
> and the most apealing is that fi at the end.
> Thanks a lot!
> It's a totally new stuff to me.
> Is there a case structure in bash? That would fit here just perfectly.
> 
> Many thanks!
> Ned
> ----- Original Message ----- 
> From: "Ralph W. Reid" <rreid@sunset.net>
> To: "Speakup is a screen review system for Linux." <speakup@braille.uwo.ca>
> Sent: Wednesday, March 30, 2005 1:16 PM
> Subject: Re: how to get the last word from file
> 
> 
> >On Tue, Mar 29, 2005 at 12:17:43PM -0700, Ned wrote:
> >>Hi list,
> >>I am using the cal command to get current month. What I need for my shell 
> >>script is how many days are there in the current month, that is, the last 
> >>listed date for that month is that very number.
> >>How can I get that number?
> >>cal | tail -1
> >>and then what?
> >>
> >>Many thanks!
> >>Ned
> >
> >The above command line will produce a blank line because the last line
> >produced by `cal` is a blank line.  If you are looking specifically
> >for days in the current month (as opposed to a more general
> >last-word-in file search), the following is one of several ways to
> >produce it:
> >
> >if [ `cal | grep -c 31` == 1 ];
> >then
> >echo 31
> >elif [ `cal | grep -c 30` == 1 ];
> >then
> >echo 30
> >elif [ `cal | grep -c 29` == 1 ];
> >then
> >echo 29
> >elif [ `cal | grep -c 28` == 1 ];
> >then
> >echo 28
> >else
> >echo Cal did not produce a calendar.
> >fi
> >
> >HTH, and have a _great_ day!
> >
> >-- 
> >Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
> >rreid@sunset.net  http://personalweb.sunset.net/~rreid
> >...passing through The City of Internet at the speed of light!
> >_PI = 4 * ARCTAN (1)

-- 
Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
rreid@sunset.net  http://personalweb.sunset.net/~rreid
...passing through The City of Internet at the speed of light!
1 = x^0