dt=`date`
cnt=0;
while [ $cnt -lt 1000 ]
do
echo $dt
cnt=$(( $cnt + 1 ))
done > dtfile
>outputfile
while :
do
cat dtfile
sleep 1
done > outputfile &
sleep 1
tail -f outputfile
You may want to learn about the sync command, and how new data is written to disk periodically, not continuously.
Since the kernel keeps all of the data being written to outfile, tail -f will see it all (except the first 990 lines of outfile)
This User Gave Thanks to jim mcnamara For This Post:
Deal all,
I have a directory called
I want to know how many MBs are transferred to it every 2 hours.
How can I do this?
Any ideas?
I have a simple idea but I can't translate it into shell script, the idea is:
1- get the size of the folder now, using
2- then get the size of the... (4 Replies)
I want to control the speed of execution of a script, There are 1000 lines in script, i want 100 lines to be executed in 10 seconds and from 11th second execution from 101 line should start, again so on. Please help me in creating the script.
Thanks,
cmaniar (1 Reply)
hi guys
I have a linux server which has about 5 volumes from SAN (fiber channel) now I need to measure the transfer rate between one LUN which is a Logical Volume to another LUN which is another Logical Volume.
so basically this server has 5 LUNs from SAN
each SAN volume is a logical volume... (3 Replies)
Hi Friends,
Can you please answer the following questions.
1) What is Paging rate ?
2) How to Calculate Paging rate from the following topas command output?
Faults 206 Real,MB 28671
Steals 311 % Comp 71.1
PgspIn 1 % Noncomp 28.8 ... (3 Replies)
I have an expect script that interrogates several hundred unix servers for both access and directories therein using "ssh user@host ls -l /path". The combination of host/path are unique but the host may be interrogated multiple times if there are multiple paths to test.
The expect script is run... (2 Replies)
I have a USB serial adapter that supports arbitrary baud rates. To set a nonstandard rate in code, I'd been using the TIOCGSERIAL like so:
struct serial_struct ser_info;
ioctl(ser_dev, TIOCGSERIAL, &ser_info);
ser_info.flags = ASYNC_SPD_CUST | ASYNC_LOW_LATENCY;
ser_info.custom_divisor... (1 Reply)
05-13-2012
number of executions per second