Ok so I am working on a command that is going to do a Dig @ a certain IP address which is enclosed in a variable.
Now I thought I had this figure out because it works. The problem is that it does not ALWAYS work.
the variable is IP=192.168.1.1
the commands I have tried are
I simply do not get it. All of these seem to work but not all the time. I'll go into one person box and it works fine and then the next one will not like it. Seems that the ones who do not like it are 1 version update behind the ones that do. But, I can't tell whats different. The bash version is the same and the freebsd version is the same. So somewhere somehow its not liking my formatting.
If I take the variable away and just do the command with the IP in there typed by hand it works fine.
Do you guys know what format would be the most universally accepted and least likely to be problematic?
I'd like to make a script that I can execute every time I sign on to my linux box that keeps track of the time and allows to me to add a remark to a file. So basically once I log in, I run the script, and it outputs the date and time to a text file (log.txt). But that isn't my problem.
I need... (1 Reply)
Hi, I've created a script in csh that takes a file and checks it for mispelled words. Im almost done but I need to do two more things but I need help.
First, when displaying an incorrect word to the user, I need to show the line of the input file that contains the word.
Second,if the user... (0 Replies)
I'm using a PERL cgi script that uses rrdtool to make graphs. I can't get the syntax correct to use a degree sign (alt+0176 like this °) and also using a variable.
If I use single quotes, I can't call the variable. If I use double quotes, there is an extra symbol (Â) before the ° which goes... (2 Replies)
Hi everyone,
Is there anywhere I can find a complete table of all characters that must be escaped by the various UNIX shells and scripting languages?
It seems every command/shell/scripting language has different rules about what characters must be escaped.
I do a lot of searching and... (3 Replies)
Please excuse my indulgence.
Thank you MG Siegler and Steve Jurvetson. But most importantly, thank you Steve Jobs.
8rwsuXHA7RA
The world has lost a genius. (1 Reply)
I have a variable $max = -3;
It can be $max = +3;
I need to check if this variable is a positive/negative value.
if its positive, should print "positive" if not "negative"
How can this be done?
Thanks in advance (2 Replies)
Hello there,
first of all: I do not want to become a hacker. you cannot do that. you cannot learn that from a book.
Don't think I'm some kind of a script-kiddie.
now that's settled let's start.
I've been trying around with a lot of OS lately.
I have backtrack5 installed on my notebook,... (10 Replies)
I have a script which is reading value from property file and doing replacement in source location which contains multiple files.
property file has values
abc=xyz; yux=1;version=3.0;
bcd=123;apple==mango
when my script does search and reads value from property file.
its replacing value... (1 Reply)
Hello,
Below script works fine when I manually enter required information for each file. When it comes to shell in auto mode, it gives various errors.
I am under ubuntu 14.04 / trusty.
manual_run.sh:
#!/bin/bash
/usr/bin/ffmpeg -start_at_zero -copyts -i nicki.mp4 -c:v mpeg2video \
-b:v 500k... (3 Replies)
Discussion started by: baris35
3 Replies
LEARN ABOUT X11R4
break
break(1) User Commands break(1)NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop
SYNOPSIS
sh
break [n]
continue [n]
csh
break
continue
ksh
*break [n]
*continue [n]
DESCRIPTION
sh
The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.
The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.
csh
The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.
The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.
ksh
The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is
greater than the number of enclosing loops, the outermost enclosing loop shall be exited.
The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera-
tion are not performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), exit(1), ksh(1), sh( 1), attributes(5)SunOS 5.10 17 Jul 2002 break(1)