You've been given good examples of how to set the date in your shell script and pass it into your awk script. And for what you seem to be doing here, that is the right thing to do.
If you do actually need to read data inside an awk script from a command created by the script itself, maybe the following example will help you understand how to do it:
Code:
#!/bin/ksh
d_t="$(date "+%D %T")"
sleep 1
d=$(date +%D)
t=$(date +%T) # The timestamp here will be one or two seconds later
sleep 1
nawk -v d_t="$d_t" -v tm="$d" -v dt="$t" 'BEGIN {
# Print the values the shell passed in
print d_t, dt, tm
}
{ # Read commands from the following here-document, run the commands,
# and read the output of those commands a line at a time
printf("Input line %d: command to be run: %s\n", NR, $0)
for(i = 1; $0 | getline out == 1; i++)
printf("Output line %d: %s\n", i, out)
close($0)
}' <<EOF
date +%D;sleep 3
date +%T;sleep 3
date '+%D %T';sleep 3
date '+before%n%c%nafter';sleep 3
cat $HOME/.profile
EOF
I need to extract the date part from the file name (20080221 in this ex) and compare it with the current date and delete it, if it is a past date.
$file = exp_ABCD4_T-2584780_upto_20080221.dmp.Z
really appreciate any help.
thanks
mkneni (4 Replies)
Hey guy,
how to make bash script to create foo.txt file and add current date into file content and that file always append.
example: today the script run and add today date into content foo.txt
and tomorrow the script will run and add tomorrow date in content foo.txt without remove today... (3 Replies)
Hi Gurus,
I'm using HP-UX B.11.23 operating system.
I've been trying to extract this log info based on the current date and month, but was having some issues as the date column which on the 4th column has a comma and the 5th column has a dot tied to it.
Here is the output from my shut... (5 Replies)
Hello gurus,
I am hoping someone can help me with the required code/script to make this work. I have the following file with records starting at line 4:
NETW~US60~000000000013220694~002~~IT~USD~2.24~20110201~99991231~01~01~20101104~... (4 Replies)
Hi,
I am trying to display future date from the current date but unable to do so in UNIX (not in PERL). For eg: if today is March 5 then I want a variable wherein I can store Mar 7 date, but unable to get the future date from the current date.
I have tried many possible ways as mentioned below... (11 Replies)
Hi all,
Following is my small script:-
#!/bin/ksh
for i in `cat /users/jack/mainfile-dr.txt`
do
sudo cp -r $i /users/jack/DR01/.
done
cd /users/jack/DR01/
sudo tar cvf system1-DR.tar *
scp system1-DR.tar backupserver:/DRFiles/system1
sudo rm -rf system1-DR.tar
In this script I... (10 Replies)
i have file 1.txt
asdas|csada|13|03|10|04|23|A1|canberra
sdasd|sfdsf|13|04|26|23|28|A1|sydney
i want to add today's date and time in the end of each row
expected output
asdas|csada|13|03|10|04|23|A1|canberra|130430|1358
sdasd|sfdsf|13|04|26|23|28|A1|sydney|130430|1358
todays date... (10 Replies)
SunOS -s 5.10 Generic_147440-04 sun4u sparc SUNW,SPARC-Enterprise
Hi,
In a folder, there are files. I have a script which reads the current date and subtract the modification date of each file.
How do I achieve this?
Regards,
Joe (2 Replies)
We want to call a parameter file (.txt) where my application read dynamic values when the job is triggered, one of such values are below:
abc.txt
------------------
Code:
line1
line2
line3
$$EDWS_DATE_INSERT=08-27-2019
line4
$$EDWS_PREV_DATE_INSERT=08-26-2019
I am trying to write a... (3 Replies)
Discussion started by: pradeepp
3 Replies
LEARN ABOUT OSX
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.
EXIT STATUS
The sleep utility exits 0 on success, and >0 if an error occurs.
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.
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