?
Solved

Linux bash script execution problem

Posted on 2012-03-22
4
Medium Priority
?
370 Views
Last Modified: 2012-03-23
I am running RHEL 6.2,

I run the a bash script which works well in RHEL 5.6

The name of the script is

net

Open in new window


The top of the script contains:

#!/bin/bash
SPEED=10000000000
.....

Open in new window


when I run the file I get the following:

[root@Blacktip02 WMB]# ./net
-bash: ./net: /bin/bash^M: bad interpreter: No such file or directory
[root@Blacktip02 WMB]#

Open in new window



I check to see if bash is there, and it is


[root@Blacktip02 WMB]# cd /bin
[root@Blacktip02 bin]# bash
[root@Blacktip02 bin]#

Open in new window



What should I do ?
0
Comment
Question by:Los Angeles1
  • 2
4 Comments
 
LVL 68

Expert Comment

by:woolmilkporc
ID: 37754449
Your script contains carriage-return characters at the line ends.

Did you transfer it from Windows in text mode (instead of binary mode)?
0
 
LVL 68

Accepted Solution

by:
woolmilkporc earned 2000 total points
ID: 37754500
tr -d '\r' < net > net.tmp && mv net.tmp net
0
 
LVL 48

Expert Comment

by:Tintin
ID: 37755183
or just do
dos2unix net

Open in new window

0
 
LVL 8

Expert Comment

by:eager
ID: 37758677
BTW, the commands you used to find bash work differently on Windows Command Shell and Linux:

   # cd /bin
   # bash

The second will run bash from where ever it is found on the PATH, which may not be in /bin.  If /bin/bash did not exist (it does on RHEL), you would still get the same result.

If you want to find where bash is located, run "which bash".  To confirm that it is in /bin, run "ls /bin/bash".

BTW (2):  Avoid developing or running scripts as root.  It is very easy to mistype a command and turn your previously working system into new discussion on EE about how to recover a trashed Linux system.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

SSH (Secure Shell) - Tips and Tricks As you all know SSH(Secure Shell) is a network protocol, which we use to access/transfer files securely between two networked devices. SSH was actually designed as a replacement for insecure protocols that sen…
This article will show you step-by-step instructions to build your own NTP CentOS server.  The network diagram shows the best practice to setup the NTP server farm for redundancy.  This article also serves as your NTP server documentation.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
Suggested Courses
Course of the Month12 days, 17 hours left to enroll

578 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question