Sponsored Content
Top Forums Shell Programming and Scripting Simple BASH script not working? Post 302315976 by doubleminus on Wednesday 13th of May 2009 05:09:26 PM
Old 05-13-2009
Simple BASH script not working?

So I need a script that does the following:

If a certain user is logged in

Run `command`

Else

Echo “incorrect user”


This is my first stab...which doesn't work:

#!/bin/bash

Code:
X="user=`ls -l /dev/console | cut -d " " -f 4`"
Y="foobar"

echo $X
echo $Y

if [ $X==$Y ]; then
   echo "no"
else
  `echo yes - run something!`
fi


It always echos yes, as though $X == $Y. Sigh. New to this - unsure of what to do.

Thanks,
double

Last edited by doubleminus; 05-13-2009 at 06:51 PM.. Reason: Poorly written question!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Why this simple script, is not working ?

Hi everybody I want to create 20 file using simple script - listed bellow-. But the script doesn't work. I hope anyone guide me to correct this script ---------------- The script integer number=01 until (($number==21)) do >TELE-LOG-$number number=$number+01 echo $number done exit... (4 Replies)
Discussion started by: so_friendly
4 Replies

2. Shell Programming and Scripting

simple perl script not working

why won't below work? I am trying to see a)sipfile has username of the system. b)it will read the sipfile and do a grep function against the /etc/passwd c)it will save that output to /tmp/result.. but my script is just hanging... #!/usr/bin/perl -w open(SIPFILE, "</tmp/sipfile") ... (4 Replies)
Discussion started by: hankooknara
4 Replies

3. Shell Programming and Scripting

Simple BASH script?

Hi guys, I'm new to the forum so forgive me if I'm sounding ... daft. I currently work in a Tech Support role. Every day we have to generate data by running around 10 .sh scripts. I was thinking instead of having to ./filename 10 times is it possible to right a new script that will run these for... (16 Replies)
Discussion started by: JayC89
16 Replies

4. Shell Programming and Scripting

simple cgi script not working

hi all, i have installed simple cgi-script under apache/cgi-bin directory hello.cgi #!/usr/bin/perl print "Content-type: text/html\n\n"; print <<END_HTML; <html> <head></head> <body>Hello, World!</body> </html> END_HTML when i hit the url... (6 Replies)
Discussion started by: raghur77
6 Replies

5. Shell Programming and Scripting

need a simple bash script

to gather the cpu utilization from a system in 5 minute intervals and direct output to file. I'm new at scripting and while this seems like an easy task I'm confused on where to start. thanks for any help (1 Reply)
Discussion started by: mkeyes001
1 Replies

6. Shell Programming and Scripting

simple script to alert if internet not working?

Hi, I am constantly automaticaly downloading a few things on the internet but since my internet connection is unstable, it sometimes wont work. Thing is the internet will appear to be connected, but no website can be accessed and no program can successfully connect to any location. I can fix... (4 Replies)
Discussion started by: fuzzylogic25
4 Replies

7. Shell Programming and Scripting

Simple bash script help

Hi to everyone here, I'm a new user and relatively-new linuxer. I'm trying to write a script that checks if every file from a directory is present in a given list and if not, delete it. should be simple. But I think I've done half the work only: this is to create the reference list: for c... (2 Replies)
Discussion started by: dentex
2 Replies

8. Shell Programming and Scripting

Help making simple perl or bash script to create a simple matrix

Hello all! This is my first post and I'm very new to programming. I would like help creating a simple perl or bash script that I will be using in my work as a junior bioinformatician. Essentially, I would like to take a tab-delimted or .csv text with 3 columns and write them to a "3D" matrix: ... (16 Replies)
Discussion started by: torchij
16 Replies

9. Shell Programming and Scripting

[Solved] Simple script not working- for loop

Hi all, Please guide me writing this script Follwing is the file which I have created, which contains the files to be copied. cat system1-dr.txt /etc/passwd /etc/shadow /etc/group /etc/vfstab /etc/profile /etc/default/init /etc/shells /etc/dfs/dfstab /etc/dfs/sharetab... (11 Replies)
Discussion started by: manalisharmabe
11 Replies

10. Shell Programming and Scripting

Simple sftp script not working - Please help

I have the below sftp script to transfer a file from a linux host(source) to another linux host(target). Public key is already set up in target host and I am able to transfer file using sftp from source to target. But not sure why the below script(ftp_script) is not working. Any help in this... (3 Replies)
Discussion started by: Armaan
3 Replies
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 04:10 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy