Really nice post , but I would like to suggest another technique using Perl:-
Code:
perl -wle '
open(IN , "<in.txt") or die "can not open$!\n" ;
open(OUT , "<out.txt") or die "can not open$!\n" ;
open(HIS , "<history.txt") or die "can not open$!\n" ;
@in = <IN> ;
@out = <OUT> ;
@his = <HIS> ;
close(IN) ;close(OUT) ;close(HIS) ;
chomp @in; chomp @out; chomp @his ;
%his=@his ;
for ($i=0 ; $i<=$#in ; $i++) {
if ($in[$i] == $out[$i]) {
print $in[$i]," ",$out[$i]; next;
}
map {
if ( $_ > $in[$i] && $_ < $out[$i] && $his{$_}) {
print $in[$i]," ",$out[$i] if ( ! $flag ) ;
print $_," ",$his{$_} ;
undef $his{$_} ;
$flag=1 ;
}
} keys %his ;
$flag=0 ;
}
'
if you use delete $his{$_} instead of undef $his{$_} (recomendation of Perl docs) it will be better and processing will be lesser; because code will be as below:-
Default shell is /usr/bin/zsh
Script will be running #!/bin/bash
Need to pull information from database while using other scripts already made (not by me).
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================================================
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My script prints lines in which the entire line may be colored, and portions may also be colored. e.g.
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picked this up from another thread.
echo 1st_file.csv; nawk -F, 'NR==FNR{a++;next} a{b++}
END{for(i in b){if(b-1&&a!=b){print i";\t\t"b}else{print "NEW:"i";\t\t"b} } }' OFS=, 1st_file.csv *.csv | sort -r
i need to use the above but with a slight modification..
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I have 2 input files:
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File1:
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Hi ,
I need one help to do some complex calculation in shell script.
here is what i need to do:-
a=2
b=2
c=2
d=2
result=a+(b/(20*c))+(c/(10*d))
is there any thing special there so that i can group intermdiate results.
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Dear All,
I have attached a file. In that I want to read some of the values like
1. ExecutionTime
2. ClockTime
etc. I want to read at a specified time. How can I do that?
Thanks & Regards,
linuxUser_ (9 Replies)
I have an FTP server with thousands of Invoices. All Invoices are in a folder called /volume1/MBSInvoices/
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Discussion started by: badr777
6 Replies
LEARN ABOUT CENTOS
sd_journal_get_cutoff_monotonic_usec
SD_JOURNAL_GET_CUTOFF_REALTIME_USEC(3) sd_journal_get_cutoff_realtime_usec SD_JOURNAL_GET_CUTOFF_REALTIME_USEC(3)NAME
sd_journal_get_cutoff_realtime_usec, sd_journal_get_cutoff_monotonic_usec - Read cut-off timestamps from the current journal entry
SYNOPSIS
#include <systemd/sd-journal.h>
int sd_journal_get_cutoff_realtime_usec(sd_journal* j, uint64_t* from, uint64_t* to);
int sd_journal_get_cutoff_monotonic_usec(sd_journal* j, sd_id128_t boot_id, uint64_t* from, uint64_t* to);
DESCRIPTION
sd_journal_get_cutoff_realtime_usec() gets the realtime (wallclock) timestamps of the first and last entries accessible in the journal. It
takes three arguments: the journal context object and two pointers to 64-bit unsigned integers to store the timestamps in. The timestamps
are in microseconds since the epoch, i.e. CLOCK_REALTIME. Either one of the two timestamp arguments may be passed as NULL in case the
timestamp is not needed, but not both.
sd_journal_get_cutoff_monotonic_usec() gets the monotonic timestamps of the first and last entries accessible in the journal. It takes
three arguments: the journal context object, a 128-bit identifier for the boot, and two pointers to 64-bit unsigned integers to store the
timestamps. The timestamps are in microseconds since boot-up of the specific boot, i.e. CLOCK_MONOTONIC. Since the monotonic clock begins
new with every reboot it only defines a well-defined point in time when used together with an identifier identifying the boot, see
sd_id128_get_boot(3) for more information. The function will return the timestamps for the boot identified by the passed boot ID. Either
one of the two timestamp arguments may be passed as NULL in case the timestamp is not needed, but not both.
RETURN VALUE
sd_journal_get_cutoff_realtime_usec() and sd_journal_get_cutoff_monotonic_usec() return 1 on success, 0 if not suitable entries are in the
journal or a negative errno-style error code.
NOTES
The sd_journal_get_cutoff_realtime_usec() and sd_journal_get_cutoff_monotonic_usec() interfaces are available as a shared library, which
can be compiled and linked to with the libsystemd-journal pkg-config(1) file.
SEE ALSO systemd(1), sd-journal(3), sd_journal_open(3), sd_journal_get_realtime_usec(3), sd_id128_get_boot(3), clock_gettime(2)systemd 208SD_JOURNAL_GET_CUTOFF_REALTIME_USEC(3)
10-05-2010
