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Top Forums Shell Programming and Scripting Need Help with function that has multiple ranges Post 302521507 by ctsgnb on Wednesday 11th of May 2011 11:44:01 AM
Old 05-11-2011
Code:
man seq

Code:
# seq 3 10
3
4
5
6
7
8
9
10

What is your final goal behind this ? what are you trying to achieve?

Just a quick shot :
Code:
# cat tst
#!/usr/bin/bash
start=0
echo "start=$start"

count(){
case $1 in
    -u) let start+=$2;echo "+$2";;
    -d) let start-=$2;echo "-$2";;
    *) echo "Error : first arg should be [-u|-d]
esac
echo "start=$start"
}

count -u 5
count -d 10
count -u 3
count -u 7
count -u 40
count -d 17

Code:
# bash tst
start=0
+5
start=5
-10
start=-5
+3
start=-2
+7
start=5
+40
start=45
-17
start=28


Last edited by ctsgnb; 05-11-2011 at 01:22 PM..
 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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