Sponsored Content
Full Discussion: Help Help Help in recursion
Top Forums Shell Programming and Scripting Help Help Help in recursion Post 302112618 by justsam on Thursday 29th of March 2007 06:37:04 AM
Old 03-29-2007
No support for Recusrsive functions in Shell scripting

Hello,

As far as i know, recursive functions are not supported in Shell Scripting.
Anyways, the following script will help you to get the factorial of a number.

#! /bin/sh

echo "Enter a number: "
read num

i=2
res=1

if [ $num -ge 2 ]
then
while [ $i -le $num ]
do
res=`expr $res \* $i`
i=`expr $i + 1`
done
fi

echo "Factorial of $num = $res"
justsam
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

recursion

I'm using the UNIX csh and i wish to use recursion to nav my way up (or down as it is) a given folder. My little test script is called "r" and takes a folder as argv (or $1) #!/bin/tcsh -f set allFiles = `ls -A $argv` cd $argv while ($#allFiles) if (-d... (1 Reply)
Discussion started by: gsjf
1 Replies

2. Shell Programming and Scripting

recursion too deep

I am running a korn shell script which has a recursive function. The script ran for 117 iterations and ended up with the following error "recursion too deep". what should be done to avert this? Thanks in advance Swamy p.s. I am on UNIX MPRAS V4 (3 Replies)
Discussion started by: swamy455
3 Replies

3. Programming

Recursion

I want to halt a tail recursive function after certain validation. I want to come out of entire recursion without unwinding phase. How can i achieve that . The coding is done in C language. (5 Replies)
Discussion started by: joshighanshyam
5 Replies

4. Shell Programming and Scripting

recursion script problem

Hi Guys,, I tried to create a recursive function in unix. The following is the code. #/bin/sh function(){ n=$1; if ; then out=1; echo "inside if for 0"; else out = `$n * function "$n-1"`; echo "inside if for $n-1; fi (3 Replies)
Discussion started by: mac4rfree
3 Replies

5. Programming

C Recursion (explain)

Hi, Question: how come the output is like that? Can explain to me abit. I am learning C. Thanks! #include <stdio.h> #include <string.h> void printit(char line_of_char, int index); int main() { char line_of_char; int index = -1; strcpy(line_of_char, "This is a string."); ... (5 Replies)
Discussion started by: seede
5 Replies

6. Shell Programming and Scripting

script recursion

Can someone please explain me why the following script calls it self recursively: #!/bin/bash echo Called $0 while this not: #!/bin/bash echo Called $($0) Thanks (6 Replies)
Discussion started by: superpointer
6 Replies

7. UNIX for Advanced & Expert Users

Recursion list for rm -R in find

In the following command: find / -ctime +3 -exec rm -R {}\; how is the recursion list built for the actual rm ? F'rinstance; I had a case where a user typed this as root using '/' instead of '.' so everything in the root level was going to be traversed. They hit <ctrl>C before too much was... (5 Replies)
Discussion started by: port43
5 Replies

8. Shell Programming and Scripting

Bash variable recursion

Not sure how to ask this question. I want concatenate strings and variable recursively into new variable. For example: infile01=/dir/subfolder/file01.txt infile02=/dir/subfolder/file02.txt infile03=/dir/subfolder/file03.txt for i in {01..03} do u=${"infile"$i} echo $u doneI got error... (7 Replies)
Discussion started by: yifangt
7 Replies

9. Solaris

BIND 9, disable recursion

Hi, I am trying to disable the recursion on DNS server (Solaris 10). I have added the lines in the named.conf as below: allow-query-cache { none; }; recursion no; Then restarted the solaris DNS services svcadm refresh svc:/network/dns/server:default Still I am able to... (0 Replies)
Discussion started by: snchaudhari2
0 Replies

10. UNIX for Beginners Questions & Answers

Copy directory withOUT recursion

Hi, I cannot find a way to copy a directory to another location with all attributes (mode, ownership, timestamps) but withOUT recursion (after so many years of working with Linux). Say I want to create /home/jail/tmp exactly like /tmp but with nothing in it. Here is what I tried: ... (7 Replies)
Discussion started by: chebarbudo
7 Replies
PG_FIELD_TABLE(3)														 PG_FIELD_TABLE(3)

pg_field_table - Returns the name or oid of the tables field

SYNOPSIS
mixed pg_field_table (resource $result, int $field_number, [bool $oid_only = false]) DESCRIPTION
pg_field_table(3) returns the name of the table that field belongs to, or the table's oid if $oid_only is TRUE. PARAMETERS
o $result - PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others). o $field_number - Field number, starting from 0. o $oid_only - By default the tables name that field belongs to is returned but if $oid_only is set to TRUE, then the oid will instead be returned. RETURN VALUES
On success either the fields table name or oid. Or, FALSE on failure. EXAMPLES
Example #1 Getting table information about a field <?php $dbconn = pg_connect("dbname=publisher") or die("Could not connect"); $res = pg_query($dbconn, "SELECT bar FROM foo"); echo pg_field_table($res, 0); echo pg_field_table($res, 0, true); $res = pg_query($dbconn, "SELECT version()"); var_dump(pg_field_table($res, 0)); ?> The above example will output something similar to: foo 14379580 bool(false) NOTES
Note Returning the oid is much faster than returning the table name because fetching the table name requires a query to the database system table. SEE ALSO
pg_field_name(3), pg_field_type(3). PHP Documentation Group PG_FIELD_TABLE(3)
All times are GMT -4. The time now is 03:46 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy