below is the samll awk script which i am not able to understand properly.
here a bit confusion in 2nd line for me
1. why
is not used before
in second line as it was used in first line
2. why always \ is used in every first line
3. is there any specific meaning of
and
awk script mentioned below
below is input file
Regards,
Scriptor
Last edited by scriptor; 04-04-2014 at 03:10 AM..
Reason: typo error
About associative nature of awk arrays i'm still confused, not able to understand yet how array element can be accessed based on a string, I got one example at gawk manual to illustrate associative nature of awk arrays, it goes here:
Codeawk '
# Print list of word frequencies
{
for (i = 1;... (3 Replies)
i am not able to understand the following code for awk:
$awk -F"|" '{ kount++}
>END { for (desig in kount)
> print desig,kount }' emp.list
the input file i.e. emp.list is ::
3432| p.k.agrwal |g.m |sales
4566|g.l.sharma |director|production
3433|r shah | g.m | production... (1 Reply)
Hi
I am unable to understand the disk layout of one of my disk attached to v240. This is newly installed system from jumpstart.
I am unable to see the free space on backup slice 2 and there are 0 to 8 slices listed when I run format and print the disk info, also there is no reference of... (9 Replies)
Hi Guys,
Can someone please explain this code to me. I could figure out it's adding and comparing two fields but I am not sure which ones.
sort -t"|" -k3.1 /tmp/mpcashqc.xtr| awk -F"|" '{CHECKAMT+=$3;BATCHTOT=$4;\
items++}END{for(i in CHECKAMT) if (CHECKAMT!=BATCHTOT)... (6 Replies)
I m executing ps command and sorting it according to memory usage.
Please find the output of the command.
# ps aux --sort pmem
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 2060 624 ? Ss 01:54 0:00 init
root 2 0.0... (1 Reply)
Hi geeks,
I am trying to understand below if statement. can someone please explain me meaning of if condition.
if ]
then
echo -e "1"
fi
Thanks
Please use CODE tags. (3 Replies)
Discussion started by: jagnikam
3 Replies
7. Post Here to Contact Site Administrators and Moderators
Variable I have in my shell script
diff=$1$2.diff
id=$2
new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff | awk -F'~' ''$2 == "$id"' {print $0}' > $new
I could see value of $id is not passing to the awk... (0 Replies)
I have a shell script (.sh) and I want to pass a parameter value to the awk command but I am getting exception, please assist.
diff=$1$2.diff
id=$2 new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff | awk... (2 Replies)
Hi
i am studying about raid partion.i am not able to understand RAID level 5.
below is excerpt taken from tutorial.
RAID level 5
are they trying to say that the will be one extra disk which contain all the data. let says there are 4 disk. out of 4 , 3 disk are used for storing data and... (15 Replies)
Hi,
I am trying to set ulimit for soft stack unlimited, but this is not taking effect, after tracing the ulimit -a unlimited command, the below output was generated, which i am unable to comprehend. Could any one help me with this?
prcbap1-r10prod: truss -d ulimit -s unlimited
Tue Dec 30... (2 Replies)
Discussion started by: NasirAbbasi
2 Replies
LEARN ABOUT OPENDARWIN
sleep
SLEEP(1) BSD General Commands Manual SLEEP(1)NAME
sleep -- suspend execution for an interval of time
SYNOPSIS
sleep seconds
DESCRIPTION
The sleep command suspends execution for a minimum of seconds.
If the sleep command receives a signal, it takes the standard action.
IMPLEMENTATION NOTES
The SIGALRM signal is not handled specially by this implementation.
The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point). This is a non-
portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.
EXAMPLES
To schedule the execution of a command for x number seconds later (with csh(1)):
(sleep 1800; sh command_file >& errors)&
This incantation would wait a half hour before running the script command_file. (See the at(1) utility.)
To reiteratively run a command (with the csh(1)):
while (1)
if (! -r zzz.rawdata) then
sleep 300
else
foreach i (`ls *.rawdata`)
sleep 70
awk -f collapse_data $i >> results
end
break
endif
end
The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
courteously by sleeping for 70 seconds in between each awk job.
DIAGNOSTICS
The sleep utility exits 0 on success, and >0 if an error occurs.
SEE ALSO nanosleep(2), sleep(3)STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A sleep command appeared in Version 4 AT&T UNIX.
BSD April 18, 1994 BSD