|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
using expr command to add value from two file
Post 302304565 by maxim42 on Monday 6th of April 2009 07:59:13 PM
04-06-2009
salam alikm this is my first chance to add something in this site may be small but i am a bignner 
Quote:
#!/usr/bin/bash
i=0
j=0
k=0
while read data
do
ar[i]="$data"
i=$(( $i + 1 ))
done<a
while read data1
do
ar1[j]="$data1"
j=$(( $j + 1 ))
done<b
i=0
j=0
while [ $k -lt ${#ar[*]} ]
do
(( ar2[k] = ar[i] + ar1[j] ))
echo ${ar2[k]}
k=$(( $k + 1 ))
j=$(( $j + 1 ))
i=$(( $i + 1 ))
done
i=0
j=0
k=0
while read data
do
ar[i]="$data"
i=$(( $i + 1 ))
done<a
while read data1
do
ar1[j]="$data1"
j=$(( $j + 1 ))
done<b
i=0
j=0
while [ $k -lt ${#ar[*]} ]
do
(( ar2[k] = ar[i] + ar1[j] ))
echo ${ar2[k]}
k=$(( $k + 1 ))
j=$(( $j + 1 ))
i=$(( $i + 1 ))
done
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am looking for the correct syntax on the expr command in UNIX. I have a script that I am building at the moment. the script is creating file1 that is an actual .sql file that is going inside the oracle database to get some information in there. It take that information, puts it inside another... (2 Replies)
Discussion started by: wolf
2 Replies
2. UNIX for Dummies Questions & Answers
Hi All,
I might be making a silly mistake but I need ur help.
I have initialized various variables:
cur_month=`date +%m`
cur_year=`date +%y`
last_year=`expr $cur_year \- 1`
It works fine for cur_month & cur_year....but has problems with last_year.
FOR LAST YEAR IT GIVES A FOLLOWING... (2 Replies)
Discussion started by: rooh
2 Replies
3. Shell Programming and Scripting
Hi All,
I have created 85 users on Linux server.
I use bsh shell for all users.But after any user get logged in on unix,he/she is not able to access the expr command.So anyone can tell me that if i have to include some files to access expr command.Because when i write-> expr 6+2 on $ prompt i'll... (1 Reply)
Discussion started by: bhumi
1 Replies
4. UNIX for Dummies Questions & Answers
hi guys....
i hava a command expr... where i m adding a value in a loop
like
Tc=`expr $Tc\+ $l`
where
Tc is declred as a variable and every time l contains a new vaue
if
Tc =0 initially
and l =2
Tc should be equal to 0+ 2
and then
l = 4
Tc = 2+4
and dispaly as 6
but after... (5 Replies)
Discussion started by: madhu_aqua14
5 Replies
5. UNIX for Dummies Questions & Answers
:)
hi Unix gurus,
Pls consider the following piece of code
str='hello'
length=echo $str|wc -c
echo $length
y= ` expr \( 80 - $length \) `
echo $y
:confused:
The last echo stmt is displaying 0 as the result.
If i put direct value like 6 instead of $length in i 3rd stmt it is giving... (8 Replies)
Discussion started by: ravi raj kumar
8 Replies
6. UNIX for Dummies Questions & Answers
Hi friends
how can i execute expr $va1 * $var2
provided i m not supposed to use '/' also the
nglob variable is turned off. (4 Replies)
Discussion started by: ashishj
4 Replies
7. Shell Programming and Scripting
i got a file called Marks
The format of Marks is:
12345678 5 7
23456789 7 9 3
What can i do with a loop, read expr and echo command to produce a new file like below:
12345678:12
23456789:20
and also when we adding fewer than 3 value with expr, we need to change any null value for... (13 Replies)
Discussion started by: mingming88
13 Replies
8. Shell Programming and Scripting
Hi
Can anyone explain me the usage of this command and the arguments used here and what will be the expected output :
v_num=`expr nav_d_20100204_1759 : '*\(*\)'`
what will be the value returned in v_num.
Thanks in Advance!!!
Regards
Naveen Purbia (3 Replies)
Discussion started by: trying_myluck
3 Replies
9. UNIX for Dummies Questions & Answers
Hi guys,
For some reason the terminal on my mac does not let me run string manipulations commands using the expr command. I'm not sure how to fix this so I'm requesting a "work-around" to using the expr command...
This is the string I'm working with:
"neo_opls01_1.log"
And I'm trying to... (9 Replies)
Discussion started by: ah7391
9 Replies
10. Shell Programming and Scripting
I'm trying to check if a variable'd string is only one character and use that in an if statement the only way I could find is:
$expr "${var}" : . # expr STRING : regrep
where the "." is the grep wildcard for any single character.
Whats wrong with my code here and is there a... (3 Replies)
Discussion started by: Tewg
3 Replies
LEARN ABOUT SUNOS
setusershell
getusershell(3C) Standard C Library Functions getusershell(3C) NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. SunOS 5.10 30 Aug 2004 getusershell(3C)