What is the efect to use the syntax like that:
The result seems the same as
I was compare the result of 'env' and 'typeset' and I see that the same variable in 'env' presented as var=value, but in 'typeset' the same vars with the same value presented with $'..'.
What is that and why?
Is there any benefit to use that syntaxis?
Last edited by alex_5161; 05-30-2008 at 01:31 PM..
while (my $row = $sth->fetchrow_arrayref) {
$var->{"@$row"}=" ";
}
Can anyone help me understanding above mentioned.
i) As per my knowledge $row is taking ARRAY Refernce from the database
ii) @$row is containing the value of 0th index of the array, testted the same.
but I am not able... (0 Replies)
Hi everyone
I am a started in UNIX operator system.
Do you know the correct sintaxis to do a cron?
The cron must execute in specific hours and minutes
How do I do that?
For example. Asumming that I want to execute my command at 6:30 a.m., 7:30 a.m. and 8:56a.m.
I know that for doing the... (1 Reply)
hi sirs
can u tell the difference between /var/log/syslogs and /var/adm/messages
in my working place i am having two servers.
in one servers messages file is empty and syslog file is going on increasing..
and in another servers message file is going on increasing but syslog file is... (2 Replies)
Hello, I recently found that my /var/sadm/install/contents, ~/admin/default, /var/spool/patch and /var/spool/pkg files were empty.
This broke the pkginfo, pkgchk and other package related tools.
The pkgmap no longer points to where the applications have been installed.
I have replaced the... (0 Replies)
Hi
I want to know what is the difference between $var and ${var}. :D
I saw in few of the scripts examples.Somewhere people use $var and somewhere ${var}.
Is there any difference between two ? :confused:
Thanks (4 Replies)
i try to find way to make string concatenation in csh ( sorry this is what i have )
so i found out i can't do :
set string_buff = ""
foreach line("`cat $source_dir/$f`")
$string_buff = string_buff $line
end
how can i do string concatenation? (1 Reply)
I have been searching and reading about syslog. I would like to know how to Transfer the logs being thrown into /var/log/messages into another file example /var/log/volumelog.
tail -f /var/log/messages
dblogger: msg_to_dbrow: no logtype using missing
dblogger: msg_to_dbrow_str: val ==... (2 Replies)
I am getting a lot of message as follows in /var/log/message files as follows.
messages.1:559:May 4 20:01:56 SERVER2 kernel: session_stat: sync=0 async=33 aretr=0
messages.1:560:May 4 20:02:42 SERVER2 kernel: session_stat: dev=fd:5 state=6 blksize=4096 mmapsize=262144
messages.1:561:May 4... (2 Replies)
Discussion started by: Anjan Ganguly
2 Replies
LEARN ABOUT OPENSOLARIS
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)