Sponsored Content
Top Forums Shell Programming and Scripting Help with shell script errors Post 302398360 by kshji on Wednesday 24th of February 2010 10:44:51 AM
Old 02-24-2010
unixfile / dosfile, eof line char ?
/bin/sh ? Some other sh, not BourneSh. It's more safety to use
ksh, bash, dash, zsh, then you know exactly which shell you are using.

Ex. case 1 is correct.

If your file numbers is empty, in first time, n is not number = expr not like so much and it is null = not enough arguments.
expr "$variable" + 1 is better than expr $variable + 1.

Code:
#! /bin/ksh  or bash or dash or ...
# count1 appends an increment to a file 200 times
# note that a file called numbers must be initialised to contain 0
echo 1 > numbers # empty file 1st and put the 1st value.
count=0
while (( count < 200 )) # loop 200 times
do
   ((count+=1)) # increment counter
   n=$(tail -1 numbers) # get last line from numbers file
   # why not use count ?
   ((n+=1))
   echo $n  >> numbers # add 1 to it and append it back
done

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to get ORA errors in alertlog file using shell script.

Hi, Can anyone tell me how to get all ORA errors between two particular times in an alertlog file using shell script. Thanks (3 Replies)
Discussion started by: suman_dba1
3 Replies

2. Shell Programming and Scripting

Parse for errors shell script

All, I have a shell script which parses the /var/adm/messages file for errors every 15 minutes as a cron job. The script runs at 01, 16, 31, and 46 minutes every hour. The problem is if the error is encountered any time during the beginning of hour I can get paged three times. I would like to... (2 Replies)
Discussion started by: bubba112557
2 Replies

3. Shell Programming and Scripting

Bad substitution errors in shell script

Hello, I was hoping for a second pair of eyes or a little bit of help figuring out what my error is in a script. I did some searching in the forums and didn't find anything so please forgive me if it a similar problem has been discussed before. My script accepts normal user arguments; however,... (2 Replies)
Discussion started by: Jackinthemox
2 Replies

4. Shell Programming and Scripting

Capture makefile errors in shell script

Hi, I have a bash script which calls a few "make". I would like to know whether the makefile failed with any errors. How do I do that in the script? Thanks, S (2 Replies)
Discussion started by: suryaemlinux
2 Replies

5. Emergency UNIX and Linux Support

Seek help on shell script syntax errors

I want to delete archivelog files that has been archived and applied from primary database to standby database. This piece of script is working in Linux server. However, I copy it to Unix server with tiny modification. It won't work and generate the error message. I have checked code carefullt... (8 Replies)
Discussion started by: duke0001
8 Replies

6. Shell Programming and Scripting

shell script for conky getting errors....

So I have a script that does a greater than or less than with a variable. My problem is that when I checked the script from the command line I was getting this error.. I am not really familiar with shell scripting. I am trying to get this script to work with conky so that it will do the... (8 Replies)
Discussion started by: krisdeniseriley
8 Replies

7. UNIX for Dummies Questions & Answers

Invalid option errors running shell script

The script below fails with the following error messages: gzip: invalid option -- 'w' Try `gzip --help' for more information. mysqldump: Got errno 32 on write cp: invalid option -- 'w' Try `cp --help' for more information. rm: invalid option -- 'w' Try `rm --help' for more information. ... (1 Reply)
Discussion started by: ANNACTION
1 Replies

8. UNIX for Dummies Questions & Answers

Interpreting Shell Script errors when called from CRON

Hi All, I am calling a series of shell scripts via CRON so everything is running as root. However, in my error log file I am seeing the following errors. Please can anyone offer any advise as to the possible causes and solution to prevent the errors from appearing. The Error 1227 seems to... (2 Replies)
Discussion started by: daveu7
2 Replies

9. Shell Programming and Scripting

How to turn off ora errors in shell script?

I have a shell script which select total count from a table and use its value in a if condition like below connect_string="username/password@tnsname" tot=`sqlplus -s $connect_string << EOF set echo off set feedback off set head off select count(*) from test_table; EOF ` if then echo... (2 Replies)
Discussion started by: vel4ever
2 Replies

10. Shell Programming and Scripting

Errors in if condition validations-Shell Script

Hello All, i am facing difficulty in validating the values, kindly help me in resolving the issue. Thanks a lot in advance. -Chandra Script:Test.sh #! /bin/sh # *************************************************************************** # Function to display help function usage()... (1 Reply)
Discussion started by: duddukuri
1 Replies
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)
All times are GMT -4. The time now is 04:57 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy