Help with bash

**nippyeyes** · 03-08-2011

Hi, i was wondering how i can use the cal command so it displays the current month and the next month, i know you can use cal -3 9 2007 to show the previous current and next but i just want to display the current and next. Thanks a lot!

**sgosnell** · 03-09-2011

From the man page: cal -A 1

-A number
Display the number of months after the current month.

**nippyeyes** · 03-09-2011

I may be being stupid but when i type cal -A 2 it says that A is an invalid option, any ideas why?

**LSalab** · 03-09-2011

Originally Posted by nippyeyes

I may be being stupid but when i type cal -A 2 it says that A is an invalid option, any ideas why?

Well, maybe it's because it's the wrong option, if you look at the manual you can find this:

Code:

-m month
             Display the specified month.  If month is specified as a decimal
             number, it may be followed by the letter ‘f’ or ‘p’ to indicate
             the following or preceding month of that number, respectively.

**sgosnell** · 03-10-2011

"cal -A 1" gives me a calendar of two months, the current month and the next month. I have no idea why you would get an error. It should work. What distro are you running? Perhaps it's different for some distros.

**drl** · 03-10-2011

Hi.

The command cal on GNU/Debian testing (wheezy) accepts "-A". The command cal on GNU/Debian squeeze (stable) does not. Both man pages are marked March 14, 2009; the wheezy version describes "-A", the squeeze version does not.

So, even within a specific distribution there are some differences between editions.

Best wishes ... cheers, drl

**nippyeyes** · 03-10-2011

I am currently using ubuntu, i thought maybe i could write a bash script and then execute it with ./filename in the terminal, does anyone have any ideas on what the bash scrip would contain, i tried simply writing cal 1 2010 + cal 2 2010 but this didnt work. Thank you

**drl** · 03-10-2011

Hi.

Originally Posted by nippyeyes

... i tried simply writing cal 1 2010 + cal 2 2010 but this didnt work ...

try:

Code:

cal 1 2011 ; cal 2 2011

Learning more about the command line (shell) would be useful ... cheers, drl

**nippyeyes** · 03-10-2011

Thanks for the help, really appreciate it. Do you know any free e books where i can expand my knowledge?

**drl** · 03-10-2011

Hi.

Many people recommend these two, and you can Google for more ... cheers, drl

Bash Guide for Beginners

Advanced Bash-Scripting Guide

Thread Tools

Display

Help with bash

Posting Permissions