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Full Discussion: printf
Top Forums Shell Programming and Scripting printf Post 302160668 by i9300 on Tuesday 22nd of January 2008 10:00:07 AM
Old 01-22-2008
I could not find the exact way to do what i wanted as well.... I wanted anything on right justify to line up regardless of whatever is on the right justify. I also liked the look of the linux style rc scripts.
I beleve now the real answer is in the curses program.
I ended up writing my own function called spaces. It takes the word count from $1 and subtracts it from the stty column width. Regardless of terminal width, the right justify will line up.
Well that might be incorrect depending on what you have in $2.

Here is the code:
Code:
spaces () {
integer WIDTH=`stty|grep columns|awk '{print $6}'|awk -F";" '{print $1}'`
let TOTAL=$WIDTH-15
FIELD1=`echo $1 |wc -c`
FIELD2=`echo $2 |wc -c`
integer FIELD1_TOTAL=$FIELD1
let SUM=$TOTAL-$FIELD1_TOTAL
TAB=`echo ' '|sed -e :a -e "s/^.\{1,$SUM\}$/ &/;ta"`
echo "$1 $TAB $2"
}

You would call it in a script with:
spaces "something on the left" "something on the right"
spaces "aaaa aaa aaaa" ok

This is what it looks like: I also embed color into variable for "OK" so it shows in green.

Code:
OK="\033[1;32mOK"
FAILED="\033[1;31mFAILED"

Code:
CHECKING SVM MIRRORS:
d0 [ c1t0d0s0 ]                                                                                        OK
d10 [ c1t0d0s1 ]                                                                                       OK
d30 [ c1t0d0s3 ]                                                                                       OK
d40 [ c1t0d0s4 ]                                                                                       OK
d50 [ c1t0d0s5 ]                                                                                       OK
d60 [ c1t0d0s6 ]                                                                                       OK
PRIMARY MIRROR: c1t0d0                                                                                 OK
SVM SECONDARY MIRROR:                                                                                  FAILED

 

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LEARN ABOUT DEBIAN

printf

PRINTF(1)							   User Commands							 PRINTF(1)

NAME

       printf - format and print data

SYNOPSIS

       printf FORMAT [ARGUMENT]...
       printf OPTION

DESCRIPTION

       Print ARGUMENT(s) according to FORMAT, or execute according to OPTION:

       --help display this help and exit

       --version
	      output version information and exit

       FORMAT controls the output as in C printf.  Interpreted sequences are:

       "     double quote

       \     backslash

       a     alert (BEL)

            backspace

       c     produce no further output

       e     escape

       f     form feed

       
     new line

       
     carriage return

       	     horizontal tab

       v     vertical tab

       NNN   byte with octal value NNN (1 to 3 digits)

       xHH   byte with hexadecimal value HH (1 to 2 digits)

       uHHHH Unicode (ISO/IEC 10646) character with hex value HHHH (4 digits)

       UHHHHHHHH
	      Unicode character with hex value HHHHHHHH (8 digits)

       %%     a single %

       %b     ARGUMENT as a string with `' escapes interpreted, except that octal escapes are of the form  or NNN

       and  all C format specifications ending with one of diouxXfeEgGcs, with ARGUMENTs converted to proper type first.  Variable widths are han-
       dled.

       NOTE: your shell may have its own version of printf, which usually supersedes the version described here.  Please  refer  to  your  shell's
       documentation for details about the options it supports.

AUTHOR

       Written by David MacKenzie.

REPORTING BUGS

       Report printf bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report printf translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       printf(3)

       The  full documentation for printf is maintained as a Texinfo manual.  If the info and printf programs are properly installed at your site,
       the command

	      info coreutils 'printf invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							 PRINTF(1)
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