I don't know why the following shell script doesn't work. Could you please help me out?
#!/usr/bin/ksh
test="cal > /tmp/tmp.txt 2>&1"
$test
I know it will work for the following format:
#!/usr/bin/ksh
cal > /tmp/tmp.txt 2>&1
However, I need to get the command from the user in... (1 Reply)
Hello all,
I have just started doing shell scripting.
I want to read a file which stores the status of my job I have submitted
on a cluster.
The file looks something like this :
========================FILE=============================
crab: Checking the status of all jobs: please wait... (4 Replies)
Hi,
I need to run a script whenever the Cron file is modified.
The requirement is whenever a user modifies the cron file, the script should run automatically.
Can you please provide your inputs ? (5 Replies)
Hi All
I have written one shell script for GPRS route add is given below named GPRSRouteSet.sh
URL="www.google.com"
VBURL="10.5.2.211"
echo "Setting route for $URL for GPRS"
URL_Address=`nslookup $URL|grep Address:|grep -v "#"|awk -F " " '{print $2}'|head -1`
echo "Executing ... (3 Replies)
i want use ssh on the host01 to execute autoexec.sh on the host02 like following :
host01> ssh host02 autoexec.sh
autoexec.sh include nohup command like follwing :
nohup /home/jack/deletedata.sh &
after i execute ssh host02 autoexec.sh one the host01. i can't found deletedata.sh... (1 Reply)
ssh -q <hostname> /opt/tcs/satish/tst.ksh
ssh -q <anotherserver> /opt/tcs/satish/tst.ksh
tst.ksh has "nohup <command> & "
when i execute below script , its throwing error as
nohup can not be found
ssh -q <anotherserver> /opt/tcs/satish/tst.ksh > log &
can someone let me... (5 Replies)
I am running the export command within a view to use that value inside my build script. But while executing it it is saying "export command not found"
My code is as follows:
--------------------------
#!/bin/sh
user="test"
DIR="/bldtmp/"$user
VIEW="test.view1"
echo "TMPDIR before export... (4 Replies)
Hello,
I need to execute below command in shell script
srvctl relocate service -d $database -s $service -i $avail -t $pref -f and also need to get the errors ,if any,in another file.
What's the right way to execute such commands in shell script?
Best regards,
Vishal (1 Reply)
friends,
i have application commands to execute in shell script it is something like this. i will login with user data it takes me to $ prompt. Example given below
login: data
ps : xxxx
$ MNSinput --this takes me to greater than prompt >
> ops --this is command i enter this output... (7 Replies)
I have a simple task to replace unix line feed end of line characters with carriage returns.
When I run the following “change file in place” sed instruction from the command line all the Line feeds are successfully replaced with Carriage returns.
sed -i 's/$/\r/' lf_file.txt
But that same... (1 Reply)
Discussion started by: hawkman2k
1 Replies
LEARN ABOUT DEBIAN
sleepenh
SLEEPENH(1) General Commands Manual SLEEPENH(1)NAME
sleepenh - an enhanced sleep program.
SYNOPSIS
sleepenh [initial-time] sleep-time
DESCRIPTION
sleepenh is a program that can be used when there is a need to execute some functions periodically in a shell script. It was not designed
to be accurate for a single sleep, but to be accurate in a sequence of consecutive sleeps.
After a successful execution, it returns to stdout the timestamp it finished running, that can be used as initial-time to a successive exe-
cution of sleepenh.
OPTIONS
There are no command line options. Run it without any option to get a brief help and version.
ARGUMENTS
sleep-time is a real number in seconds, with microseconds resolution (1 minute, 20 seconds and 123456 microseconds would be 80.123456).
initial-time is a real number in seconds, with microseconds resolution. This number is system dependent. In GNU/Linux systems, it is the
number of seconds since midnight 1970-01-01 GMT. Do not try to get a good value of initial-time. Use the value supplied by a previous exe-
cution of sleepenh.
If you don't specify initial-time, it is assumed the current-time.
EXIT STATUS
An exit status greater or equal to 10 means failure. Known exit status:
0 Success.
1 Success. There was no need to sleep. (means that initial-time + sleep-time was greater than current-time).
10 Failure. Missing command line arguments.
11 Failure. Did not receive SIGALRM.
12 Failure. Argument is not a number.
13 Failure. System error, could not get current time.
USAGE EXAMPLE
Suppose you need to send the char 'A' to the serial port ttyS0 every 4 seconds. This will do that:
#!/bin/sh
TIMESTAMP=`sleepenh 0`
while true; do
# send the byte to ttyS0
echo -n "A" > /dev/ttyS0;
# just print a nice message on screen
echo -n "I sent 'A' to ttyS0, time now is ";
sleepenh 0;
# wait the required time
TIMESTAMP=`sleepenh $TIMESTAMP 4.0`;
done
HINT
This program can be used to get the current time. Just execute:
sleepenh 0
BUGS
It is not accurate for a single sleep. Short sleep-times will also not be accurate.
SEE ALSO date(1), sleep(1).
AUTHOR
This manual page was written by Pedro Zorzenon Neto.
2008/04/20 SLEEPENH(1)