Hi,
I want to write a perl script, which will increment number stored in file. I want to do this without any file handles. I think we have to use some UNIX commands. I am not sure how to do this with file handles.
Thanks, (1 Reply)
Hi All,
I have a variable n that stores a number.
Eg. echo $n comes out to be 120.
I need to print 121 using echo command on n.
Please advice.
Thanks in advance !! (4 Replies)
Hi,
I have a perl script which prints epoch value of date in milliseconds as the output.
My reuirement is that once the output is printed,the day variable shld increment by 1 and when i execute the script for the second time the output shld be for the new day value.
My script looks as... (11 Replies)
Hello There,
I have been trying to increment the value of variable to 1, 2, 3 etc. but, it displays
1
1+1
1+1+1
.....
:wall:
Could anyone help out with this?
for i in *.*
do
s=`expr $s+1`
echo $s
j=$i$j
mv $i $j
done
Any help is appreciated? (24 Replies)
i have a variable that has more than one value. i am declaring another variable, which will have the old variable data one by one. i want to use the second variable to hold the track of all the variable it has parsed from the first one. can somebody help me how do i declare and use the second... (7 Replies)
Hi there everyone!
This is my first post so be gentle.
I have a small bash script that is extracting 3 line every 3 lines. I got the AWK part but i cant do the loop part.
#!/bin/bash
export line=`awk 'END { print NR }' btnew`
echo $line
for i in {1..$line..3} #increment
do
echo... (2 Replies)
Hi All,
I am new to this forum and a novice at shell script. I am trying to write a script to determine each of the NIC configured on a linux system and its speed and Duplex. I came up with the following piece of code:
echo `ifconfig -a | grep eth > /home/a/nic.txt`
i=`awk -F, '{print... (4 Replies)
Hi All,
I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I... (5 Replies)
hey guys,
I need to incerement the date variable for instance
echo `date '+%F %H:%M:00'`
this produces
2014-08-02 20:05:00
-I will grant this to : $Datehour and need to assign 1 hr from now to $Datelasthour
-the script time will be used to talk to DB system information.
however... (4 Replies)
Discussion started by: mo_VERTICASQL
4 Replies
LEARN ABOUT MOJAVE
topsyscall
topsyscall(1m) USER COMMANDS topsyscall(1m)NAME
topsyscall - top syscalls by syscall name. Uses DTrace.
SYNOPSIS
topsyscall [-Cs] [interval [count]]
DESCRIPTION
This program continually prints a report of the top system calls, and refreshes the display every 1 second or as specified at the command
line.
Since this uses DTrace, only users with root privileges can run this command.
OPTIONS -C don't clear the screen
-s print per second values
EXAMPLES
Default output, 1 second updates,
# topsyscall
Print every 5 seconds,
# topsyscall 5
Print a scrolling output,
# topsyscall -C
FIELDS
load avg
load averages, see uptime(1)
syscalls
total syscalls in this interval
syscalls/s
syscalls per second
SYSCALL
system call name
COUNT total syscalls in this interval
COUNT/s
syscalls per second
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
topsyscall will run until Ctrl-C is hit, or the specified interval is reached.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO dtrace(1M), prstat(1M)version 0.90 Jun 13, 2005 topsyscall(1m)