I need to print the following values with printf as the follwoing around like this:
printf "[`date +%d"/"%b"/"%G"-"%T`] [WARN] $PARAM1 $PARAM2 $PARAM3 The required output:
[02/Jun/2010-11:08:42] [WARN] val1....val2...val3 the gap between val1 to val2 and from val2 to val3 must be const gap not depend the length of the values
printf "%s [WARN] %s %s %s\n" `date +"%d/%b/%G-%T"` foo bar baz Not sure what you meant by constant gap. If it is a column width for foo, bar and baz, try %13s, where 13 is minimum column width.
I understand your question. Using another answer as a base for mine:
If you want to pad each of the PARAMs then just add a numerical argument to the printf and it will pad it out to that number of characters per field.
Pad by 20 characters: printf "%s [WARN] %20s %20s %20s" date +"%d/%b/%G-%T" foo bar baz
Examples:
printf "%s [WARN] %16s %16s %16s" [`date +"%d/%b/%G-%T"`] foo bar baz 02/Jun/2010-11:22:54 [WARN] foo bar baz Longer...
printf "%s [WARN] %16s %16s %16s" [`date +"%d/%b/%G-%T"`] longerfoo longerbar longerbaz 02/Jun/2010-11:23:42 [WARN] longerfoo longerbar longerbaz Much Longer...
printf "%s [WARN] %16s %16s %16s" [`date +"%d/%b/%G-%T"`] muchlongerfoo muchlongerbar muchlongerbaz 02/Jun/2010-11:24:12 [WARN] muchlongerfoo muchlongerbar muchlongerbaz Try it on a console. It works.
"%-16s".