1. ${VAR} encapsulation is normally not needed.
It is independent of the quoting: "$VAR" is the same as "${VAR}".
In some cases the quoting eliminates the need of ${VAR}: $VARx can be "$VAR"x instead of "${VAR}x"
Quoting is only needed in command arguments:
2.
In your example it does no harm because stdout is redirected in >> ${UPD_FEED_PROC_LOG}
Nevertheless you should remove the backticks. (Overhead, confusing, risk if the redirection is removed or further code is added.)
Last edited by MadeInGermany; 06-02-2013 at 11:42 AM..
Can somebody please guide me towards right syntax:
#!/bin/ksh
if i = $(grep $NAME filename)
echo "Name Found"
else
echo " Name not Found"
fi
I need to grep for $NAME in the file, and if it returns false, execute a series of commands and if true, exit out.
The above is not the right... (3 Replies)
Okay, well this is more or less my first attempt at writing a shell script.
Anyways, here's my code:
cd ${PATH}
if
then
rm ${FILE}
./anotherScript
else
exit 1
fi
exit 1
Anyways, it's a pretty simple script that is supposed to search for the... (4 Replies)
I'm piping the results of a tcpdump into a shell script and want certain commands executed (specifically the firing of an SNMP alert) based on a grep for certain contents in the output of tcpdump.
For example, I have
#!/bin/bash
while read str; do
grep 'ttl 64' -q && sudo snmptrap -v 1... (2 Replies)
(extract from SQL binlog file...)
# at 4960
#080801 14:35:31 server id 4 end_log_pos 195 Query thread_id=63121426 exec_time=0 error_code=0
use d_jds;
SET TIMESTAMP=1217581531;
UPDATE bid_details set bidding = 3170.37 ,deduction=if((3170.37 < 37.43),0,deduction)
where... (3 Replies)
Hi All,
Please can somebody advise that if I want to search a pattern xyz the grep command should only select xyz and not any other pattern containing xyz (ex abxyzcd)
Regards (1 Reply)
I'm searching the most effective way of doing the following task, so if someone can either provide a working solution with sed or one totally different but more effective then what I've got so far then please go ahead!
The debugme directory has 3 subdirectorys and each of them has one .txt file... (7 Replies)
Please see the script segment below
for i in $files
do
echo $i
if ; then
case "$1" in
"IE0263"|"IE0264"|"IE0267"|"IE0268")
short_filename=`ls -l $i | cut -c108-136 | sort`
;;
"IE0272"|"IE0273")
short_filename=`ls -l $i | cut... (4 Replies)
Hi,
I have an array with characters and I am looking for specific character in that array and if those specific character not found than I use goto statment which is define somehwhere in the script. My code is:
set a = (A B C D E F)
@ i = 0
while ($i <= ${#a})
if ($a != "F" || $a != "D")... (3 Replies)
I receive a segmentation fault on some servers when grepping a string, but not when I use -i, and vice-versa. I have googled this and realise it is usually a hardware / memory issue.
I'd like to write an if statement that says "if grep string returns 'Segmentation fault' then grep the same... (4 Replies)
Hi,
Am working in a filenet domain where we are using AIX as our terminal to run the jobs and schedule the shell scripts to run . In my previous post regarding the "Log modification with finding errors" ... (12 Replies)
Discussion started by: Kalaihari
12 Replies
LEARN ABOUT OPENDARWIN
upslog
UPSLOG(8) NUT Manual UPSLOG(8)NAME
upslog - UPS status logger
SYNOPSIS
upslog -h
upslog [OPTIONS]
DESCRIPTION
upslog is a daemon that will poll a UPS at periodic intervals, fetch the variables that interest you, format them, and write them to a
file.
The default format string includes variables that are supported by many common UPS models. See the description below to make your own.
OPTIONS -h
Display the help message.
-f format
Monitor the UPS using this format string. Be sure to enclose format in quotes so your shell doesn't split it up. Valid escapes within
this string are:
%%
Insert a single "%"
%TIME format%
Insert the time with strftime formatting
%ETIME%
Insert the number of seconds, ala time_t. This is now a 10 digit number.
%HOST%
insert the local hostname
%UPSHOST%
insert the host of the UPS being monitored
%PID%
insert the pid of upslog
%VAR varname%
insert the value of variable varname
The default format string is:
%TIME @Y@m@d @H@M@S% %VAR battery.charge% %VAR input.voltage%
%VAR ups.load% [%VAR ups.status%] %VAR ups.temperature%
%VAR input.frequency%
-i interval
Wait this many seconds between polls. This defaults to 30 seconds.
If you require tighter timing, you should write your own logger using the upsclient(3) library.
-l logfile
Store the results in this file.
You can use "-" for stdout, but upslog will remain in the foreground.
-s ups
Monitor this UPS. The format for this option is upsname[@hostname[:port]]. The default hostname is "localhost".
-u username
If started as root, upsmon will setuid(2) to the user id associated with username for security.
If username is not defined, it will use the value that was compiled into the program. This defaults to "nobody", which is less than
ideal.
SERVICE DELAYS
The interval value is merely the number given to sleep(3) after running through the format string. Therefore, a query will actually take
slightly longer than the interval, depending on the speed of your system.
LOG ROTATION
upslog writes its PID to upslog.pid, and will reopen the log file if you send it a SIGHUP. This allows it to keep running when the log is
rotated by an external program.
SEE ALSO
Server:
upsd(8)
Clients:
upsc(8), upscmd(8), upsrw(8), upsmon(8)
Internet resources:
The NUT (Network UPS Tools) home page: http://www.networkupstools.org/
Network UPS Tools 05/21/2012 UPSLOG(8)