I'm lost

vsop · 04-21-2004, 02:59 PM

I need to right a script for this class that prints out the arguments from the command line each on a seperate line diagonaly.

So that each word on the next line starts where the last left off with no spaces.

so if the arguments were AAA BBBB CCCC DDDD EEEEE FFFF
it would print out

AAA
===BBBB
=======CCCC
===========DDDD
===============EEEEE
===================FFFF

(I just used the '=' where blank spaces should be
I can't figure out how to go about getting the spacing for each argument

david_ross · 04-21-2004, 03:18 PM

What about:

Code:

#!/bin/bash

IFS="
"
count=0;
for line in `cat infile`;do
 for ((num=0;$count != $num;num=$(($num+1))));do
  echo -n " "
 done
 echo $line
 num=`echo $line | wc -m`
 count=$(($count+$num))
done

vsop · 04-21-2004, 03:31 PM

Thats close, I need to get rid of the space between the begining of the word on the next line and the end of the word on the line above it. So that where the word ends the next space on the line below it is where the next word will start

Hko · 04-21-2004, 04:55 PM

Code:

#!/bin/bash

SPACES="============================================================"
NR=0
ARG=$1
while shift ; do
	echo $ARG
	NR=$((NR+${#ARG}))
	ARG=$1
	test -z $ARG || echo -n ${SPACES:0:$NR}
done

vsop · 04-21-2004, 05:18 PM

Quote:

Originally posted by Hko

Code:

#!/bin/bash SPACES="============================================================" NR=0 ARG=$1 while shift ; do echo $ARG NR=$((NR+${#ARG})) ARG=$1 test -z $ARG || echo -n ${SPACES:0:$NR} done

That won't work with regular spaces. It works fine with the '=' char, but if you replace it with a blank spaces it does not work

I got the code from david_ross
to work just now..

Code:

#!/bin/bash

IFS="
"
count=0;
for line in `cat infile`;do
 for ((num=0;$count != $num;num=$(($num+1))));do
  echo -n " "
 done
 echo $line
 num=`echo $line | wc -m`
 num=$(($num-1))
 count=$(($count+$num))
done

I just added the line num=$(($num-1)) to get rid of the spacing issue..

Thanks For the help

Hko · 04-21-2004, 05:47 PM

Quote:

Originally posted by vsop
That won't work with regular spaces. It works fine with the '=' char, but if you replace it with a blank spaces it does not work

True.
But to fix this, you only need to put double quotes around ${SPACES:0:$NR}.
Then it does work.

Code:

SPACES="                                                               "
NR=0
ARG=$1
while shift ; do
	echo $ARG
	NR=$((NR+${#ARG}))
	ARG=$1
	test -z $ARG || echo -n "${SPACES:0:$NR}"
done

vsop · 04-21-2004, 06:06 PM

Quote:

Originally posted by Hko
True.
But to fix this, you only need to put double quotes around ${SPACES:0:$NR}.
Then it does work.

Code:

SPACES=" " NR=0 ARG=$1 while shift ; do echo $ARG NR=$((NR+${#ARG})) ARG=$1 test -z $ARG || echo -n "${SPACES:0:$NR}" done

Nice, did not even think about the double quotes.

Thanks Guys

david_ross · 04-22-2004, 12:54 PM

With my example you should just be able to change the for line:
for ((num=1;$count != $num;num=$(($num+1))));do