Sponsored Content
Full Discussion: bourne shell script
Top Forums Shell Programming and Scripting bourne shell script Post 11490 by psrinivas on Thursday 6th of December 2001 06:17:21 AM
Old 12-06-2001
bourne shell script

Hi all,
Can somebody answer the following query

Thanks,
Srinivas

A shell program that takes one or any number of file directory names as input; sorts the directories given as parameters jointly in the ascending or decending order of choice For EX : dips abc etc desc will sort the files containied in abc and etc
directories in desending order; in case it is found that one of the given name is directory then an error message should be displayed.

I have tried the following but in vain..

tot_params=$#
echo "The number of parameters supplied = $tot_params"

dir_params=`expr $# - 1`
echo "The number of dir file names supplied = $dir_params"

#index initialization

index=1

# at least two parameters to be supplied

if test $# -lt 2
then
echo "Please enter at least one directory name parameter and one sort parameter"
exit 1
else
# loop thru the all the directories
# listing the file names
# in ascending or descending order

sort_order = $$tot_params

while test $index -le $tot_params
do
file_name = $$index

# sort parameter is 'ascending'

if test $sort_order = asc
then
echo "File Listing in Ascending Order"
ls -l file_name

# if the file_name is not a directory

if test $? -ne 0
then
echo "$file_name is not a directory"
exit 1
else
index=`expr $index+1`
fi

# sort parameter is 'descending'

elif test $sort_order = dsc
then
echo "File Listing in Descending Order"
ls -lr file_name

# if the file_name is not a directory

if test $ -ne 0
then
echo "$file_name is not a directory"
exit 1
else
index=`expr $index+1`
# incorrect sort parameter supplied

else
echo "The Sort argument is $$tot_params"
echo "The Directory File name is $$index"
echo "The supplied sort parameter is incorrect"
exit 1
fi
done

fi


if test $? -ne 0
then
echo "sorry..something gone amiss!!!"
else
echo "success"
fi
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Bourne shell script need help please ?

i have this assignment.. and i mad this script but there is something wrong with it.. if anyone can tell me.. watz going on... i would appreciate it.. tHnX in advance.. count=1 val=$2 op=$1 ans=0 if then if then while do ... (7 Replies)
Discussion started by: dezithug
7 Replies

2. UNIX for Dummies Questions & Answers

Bourne Shell Script

Hello, I'm throwing this out there as a novice to the Unix world...I've been working on a project that requires me to ouput (using the echo command) a list of names in a single column format, but the problem is the input is in row format followed by a blank space...If anyone could give me a... (2 Replies)
Discussion started by: dmhonor914
2 Replies

3. Shell Programming and Scripting

Trouble using substr function with Bourne shell script

Hi, I'm a newbie to UNIX scripting and I'm having some trouble compiling my script. I'm using the Bourne Shell and cannot seem to use the substr function correctly. I'm trying to extract the last two digits of a year that's stored in a variable based off of a condition. I've searched the... (4 Replies)
Discussion started by: E2004
4 Replies

4. Shell Programming and Scripting

cd from a Bourne Shell Script - Please Help

Dear Bourne Shell Expert, I am trying to change the current working directory from within a Bourne Shell script. Simply enough i thought ! As I am sure you are well aware, Inside the script i echo `pwd` and it seems ok, but the shell spawns another shell to execute this and as such, when my... (10 Replies)
Discussion started by: fawqati
10 Replies

5. Shell Programming and Scripting

Bourne: How to invoke an alias from within a shell script

Bourne: How to invoke an alias from within a shell script If I type in the alias in the command line, it runs If I insert that same alias into my shell script and run the shell script, the alias is not invoked. Help please. (2 Replies)
Discussion started by: techshots
2 Replies

6. Shell Programming and Scripting

Bourne Shell script - log for users loggin on and off

Hello all, I'm new to shell scripting and want to make a script that I can write to log the users logging on and off the a unix system. I have had a good look over the past few days to crack it, I think I am getting close. I want a script that runs an infinite loop to check every 5 seconds... (14 Replies)
Discussion started by: noodlesoup
14 Replies

7. Shell Programming and Scripting

help with bourne shell script

Attempting to write a script to eventually notify me via email for when there is packetloss across the backbone. I am looking for values greater than 0% in the mtr field. #!/bin/sh target=www.google.com date +"%D"_"%T" >> /home/rich/mtr.log echo "----------------------------------------" >>... (1 Reply)
Discussion started by: closedown
1 Replies

8. Shell Programming and Scripting

bourne shell script error on line containing declare...

Hi, Get the following error when running a shell script with following statement. Syntax error at line 150 : `(' is not expected 150: declare -a VPO_SEV=(Normal Warning Minor Major Critical) it runs fine using bash, so I guess the script should be using bash but is there a... (1 Reply)
Discussion started by: wilsonee
1 Replies

9. Shell Programming and Scripting

Open a file from within a Bourne shell Script

I am suppose to make a program that cuts the extension off of a file. It uses that .ext to decide which program needs to be used to open the file. This only finds the name of the program from a list of programs I made. My problem is when it has the name of the program it needs to use, how can I... (3 Replies)
Discussion started by: dordrix
3 Replies

10. Homework & Coursework Questions

New user needs help with bourne shell script

This is my question, below the question is the template Write and execute a Bourne shell script called homework that will From within the script, create three background processes: a) (2 points) one that saves a long listing of your hidden files to a file named hiddenlist b) (2 points) ... (4 Replies)
Discussion started by: luislozoya
4 Replies
TEST(1) 						      General Commands Manual							   TEST(1)

NAME
test - set status according to condition SYNOPSIS
test expr DESCRIPTION
Test evaluates the expression expr. If the value is true the exit status is null; otherwise the exit status is non-null. If there are no arguments the exit status is non-null. The following primitives are used to construct expr. -r file True if the file exists (is accessible) and is readable. -w file True if the file exists and is writable. -x file True if the file exists and has execute permission. -e file True if the file exists. -f file True if the file exists and is a plain file. -d file True if the file exists and is a directory. -s file True if the file exists and has a size greater than zero. -t fildes True if the open file whose file descriptor number is fildes (1 by default) is the same file as /dev/cons. s1 = s2 True if the strings s1 and s2 are identical. s1 != s2 True if the strings s1 and s2 are not identical. s1 True if s1 is not the null string. (Deprecated.) -n s1 True if the length of string s1 is non-zero. -z s1 True if the length of string s1 is zero. n1 -eq n2 True if the integers n1 and n2 are arithmetically equal. Any of the comparisons -ne, -gt, -ge, -lt, or -le may be used in place of -eq. The (nonstandard) construct -l string, meaning the length of string, may be used in place of an integer. These primaries may be combined with the following operators: ! unary negation operator -o binary or operator -a binary and operator; higher precedence than -o ( expr ) parentheses for grouping. The primitives -b, -u, -g, and -s return false; they are recognized for compatibility with POSIX. Notice that all the operators and flags are separate arguments to test. Notice also that parentheses and equal signs are meaningful to rc and must be enclosed in quotes. EXAMPLES
Test is a dubious way to check for specific character strings: it uses a process to do what an rc(1) match or switch statement can do. The first example is not only inefficient but wrong, because test understands the purported string "-c" as an option. if (test $1 '=' "-c") echo OK # wrong! A better way is if (~ $1 -c) echo OK Test whether is in the current directory. test -f abc -o -d abc SOURCE
/sys/src/cmd/test.c SEE ALSO
rc(1) TEST(1)
All times are GMT -4. The time now is 07:12 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy