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Full Discussion: Trying to center my output text
Top Forums Shell Programming and Scripting Trying to center my output text Post 302288631 by jim mcnamara on Tuesday 17th of February 2009 03:05:49 PM
Old 02-17-2009
cal is written in C and the output witdh is always known ahead of time.

This example depends on the COLUMNS environment variable, which can be changed by some things after you login -- to no longer match your tty.

Code:
center()
{
     
     value="$1" 
     if [[ $value -lt $COLUMNS ]] ; then
       width=$(( (  $COLUMNS - ${#value} ) / 2 ))
       printf "%${width}s\n"  "$1"
     else
        echo "$1"
     fi
}

#usage
center "print me at the center"

 

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LEARN ABOUT DEBIAN

wincommand

WinCommand(1x)						   AfterStep X11 window manager 					    WinCommand(1x)

NAME

       WinCommand - AfterStep module for choosing and manipulating windows based on patterns

CONFIGURATION OPTIONS

DESCRIPTION

       WinCommand  is  a  command  line  tool  which allows you to select windows based on their name and to then manipulate them in various ways.
       Actions currently supported are: "center", "center jump", "iconify", "jump", "kill", "move", "resize" and "sendtodesk".

DEFAULTS

       The default pattern is "", meaning all windows will be selected.

       All other default-values depend on the action you would like WinCommand to take. If more than one action is specified,  default-values  are
       set depending on the last action specified.

ACTIONS

       center

	      Place matching windows into the center of the screen.

       center jump:

	      Places first window that matches into the center of the screen and jumps to it.

       iconify:

	      Iconifies matching windows.

       jump:

	      Jumps to the first window which matches.

       kill:

	      Kills all matching windows.

       move:

	      Moves all matching windows to x/y. x and y are specified using the -x and -y flags.

       resize:

	      Resize all matching windows. The two parameters width and height are specified using the -width and -height flags.

       send_to_desk:

	      Send all matching windows to desk specified with the -new_desk flag.

OPTIONS

       -all

	      Operate on all windows which match the given pattern. This is set by default unless the action is either "jump" or "center jump".

       -alldesks

	      Windows on all desks will be taken into account. This is set by default if action is either "jump" or "center jump".

       -desk

	      Windows on the whole desk will be taken into account.

       -x/-y

	      These are required when issuing the move-command.

       -width/-height

	      These are required whenever you want to resize windows.

	      Examples WinCommand -pattern term iconify

	      This command will iconify all terminals. Since the specified pattern is a regular expression, something like this also works:

	      WinCommand -pattern "(term)|(moz)" iconify

	      This will iconify all terminals and mozilla-browser windows.

	      WinCommand -pattern xmm jump

	      will jump to your xmms. In this situation, it's far more advisable to use GWCommand though.

	      It is probably not a good idea to delete windows while windows are being arranged.

3rd Berkeley Distribution					AfterStep v.2.2.11						    WinCommand(1x)
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