UNIX for Dummies Questions & Answers

$ cat print_centered.ksh
#!/usr/dt/bin/dtksh

print_centered(){
  integer screen_width=$(stty|grep columns|cut -f2 -d';'|cut -f2 -d'=')
  integer text_length=${#1}
  integer pad=$((($screen_width - $text_length)/2 ))
  format="%${pad}s%s"
  printf "$format\n" " " "$1"
}

print_centered "center this text please"

exit 0

$ print_centered.ksh
                            center this text please
$

$ cat file1
Phone Book
Company
Phone Number

$ COLUMNS=179

$ while read TEXT; do printf '%*s\n'  $(((($COLUMNS-${#TEXT})/2)+${#TEXT})) "$TEXT"; done < file1
                                                                                    Phone Book
                                                                                      Company
                                                                                   Phone Number

$

#!/bin/bash

print_centered(){
  screen_width=$(stty|grep columns|cut -f2 -d';'|cut -f2 -d'=')
  text_length=${#1}
  pad=$((($screen_width - $text_length)/2 ))
  format="%${pad}s%s"
  printf "$format\n" " " "$1"
}

print_centered "center this text please"

exit 0