I have a unix script written in the korn shell. At the top of the script I call a script that exports the values of the variables I use in my script. I know that when you execute the script using ksh -x it shows you the script running. I was wondering if there was a way you could run the script... (2 Replies)
I have to write a script to verify input parameters;
say esr should be YES or NO other wise the script should print an error.
This is what i tried in my script but I get the following error
:
esr="YES"
if ; then
print " Error should specify esr options YES/NO"
else
esr =$esr
fi
... (2 Replies)
I need to create a script that has a user enter a value. I want to verify that the value is either 1,2, or 3. If it is not then I want them to try entering it again. I am using a while loop to force them to retry.
I am able to test the input against 1,2, and 3, but when I test agains an... (4 Replies)
Guy's
I have script doing many steps as the below ...
#############
## step1# mount all Files system
mount all
## step2# Start the application
/app/appsh
#############
but some time mount points will not be mounted completely so that will give an error if the next step started... (1 Reply)
I patched a linux kernel 2.6.28 with lttng patch.
Now I have two folder of linux patched and unpatched.
How can I verify whether the linux is patched or unptahced(original version)? (0 Replies)
Dear Friends,
I am looking for a shell script to merge input files into one file .. here is my idea:
1st paramter would be outfile file (all input files content)
read all input files and merge them to input param 1
ex: if I pass 6 file names to the script then 1st file name as output file... (4 Replies)
I need write a Korn shell which accept input parameter. But this input paramter must match one of the string in an existsing file (listkeyword). Can someone one help, how this can be done ? (3 Replies)
I have a couple of questions regarding multipath.
If I do vgdisplay vg01, I see it is using 1 PV: /dev/dm-13
If I type multipath -ll I see dm-9, dm-10, dm-11, dm-12, but do not see dm-13. Is my vg01 multipathed? How can I actually know for sure?
Secondly, let's say this time vg01 says... (1 Reply)
In the bash below the out put of a process is written to input. What I am trying to do is read each line in the input and verify/check it for specific text (there are always 6 lines for each file and the specific text for each line is in the description). There will always be 6 lines in each... (5 Replies)
Discussion started by: cmccabe
5 Replies
LEARN ABOUT ULTRIX
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)