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Full Discussion: Problem with sort-of array in SH
Top Forums UNIX for Dummies Questions & Answers Problem with sort-of array in SH Post 302414022 by onstock on Monday 19th of April 2010 03:38:44 AM
Old 04-19-2010
Problem with sort-of array in SH
Hello to everyone!

I'm really new in shell scripting and I'm experiencing a very odd problem. This is my first post in this forum, hope you can help!

I know that declaring arrays in Bourne Shell is impossible. But this is where I start having problems - system administrator did not install ksh. So after searching some in google, I found an alternative way to declare an array, however I do not know if this is gonna work.

Code:
for i in $*
do
for word in $i
do
echo "$word"
done
done

It reads values from command line and prints them out. I need characters entered in command line to be printed out in one line without spaces and I've done it by myself too:

Code:
echo "Formatted text:"
for var in $*
do
printf "%s$var"
done > "text"
cat text

But what about arrays? Would this work for me? (Found it by googling):

Code:
echo "Enter the line: \c"
read temp
n=0
for word in $temp
do
n=`expr $n + 1`
   eval part$n="$word"
done

All I could achieve was printing out the number of $n which was storing information. Creating another loop below this code trying to take values from part$n or $part$n did not give any results:

Code:
for var in $part$n
do
printf "%s$var"
done

Also, what exactly 'expr' and 'eval' stands for?

Any help would be appreciated,

onstock
Last edited by onstock; 04-19-2010 at 04:48 AM..
 

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LEARN ABOUT MINIX

sort

SORT(1) 						      General Commands Manual							   SORT(1)

NAME

       sort - sort a file of ASCII lines

SYNOPSIS

       sort [-bcdfimnru] [-tc]	[-o name] [+pos1] [-pos2] file ...

OPTIONS

       -b     Skip leading blanks when making comparisons

       -c     Check to see if a file is sorted

       -d     Dictionary order: ignore punctuation

       -f     Fold upper case onto lower case

       -i     Ignore nonASCII characters

       -m     Merge presorted files

       -n     Numeric sort order

       -o     Next argument is output file

       -r     Reverse the sort order

       -t     Following character is field separator

       -u     Unique mode (delete duplicate lines)

EXAMPLES

       sort -nr file	   # Sort keys numerically, reversed

       sort +2 -4 file	   # Sort using fields 2 and 3 as key

       sort +2 -t: -o out  # Field separator is :

       sort +.3 -.6	   # Characters 3 through 5 form the key

DESCRIPTION

       Sort  sorts  one or more files.	If no files are specified, stdin is sorted.  Output is written on standard output, unless -o is specified.
       The options +pos1 -pos2 use only fields pos1 up to but not including pos2 as the sort key, where a field is a string of	characters  delim-
       ited  by  spaces and tabs, unless a different field delimiter is specified with -t.  Both pos1 and pos2 have the form m.n where m tells the
       number of fields and n tells the number of characters.  Either m or n may be omitted.

SEE ALSO

       comm(1), grep(1), uniq(1).

																	   SORT(1)
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