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Full Discussion: awk Behavior
Top Forums UNIX for Beginners Questions & Answers awk Behavior Post 302978766 by sumguy on Wednesday 3rd of August 2016 11:46:38 AM
Old 08-03-2016
awk Behavior

Linux Release
Quote:
[host@localhost ~]$ more /etc/*lease
::::::::::::::
/etc/centos-release
::::::::::::::
CentOS release 6.7 (Final)
Uname details
Quote:
[host@localhost ~]$ uname -a
Linux localhost 2.6.32-504.16.2.el6.x86_64 #1 SMP Wed Apr 22 06:48:29 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Data file
Quote:

[host@localhost ~]$ more dafile
10.10.10.10,house
10.10.10.11,car
10.10.10.12,boat
10.10.10.13,truck
Ive been at the command line for some time. Back as far as SCO and Interactive Unix. I have always used this construct without issues. I want to isolate the ip / field 1. As you can see .. the first line is "skipped".

Quote:
[host@localhost ~]$ awk '{FS="," }{print $1}' dafile
10.10.10.10,house
10.10.10.11
10.10.10.12
10.10.10.13
This works as expected. But again, whats changed ?
Quote:
[host@localhost ~]$ awk 'BEGIN { FS = "," };{print $1}' dafile
10.10.10.10
10.10.10.11
10.10.10.12
10.10.10.13
Thanks !
 

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NTPTRACE(8)						    BSD System Manager's Manual 					       NTPTRACE(8)

NAME
ntptrace -- trace a chain of NTP servers back to the primary source SYNOPSIS
ntptrace [-vdn] [-r retries] [-t timeout] [server] DESCRIPTION
ntptrace determines where a given Network Time Protocol (NTP) server gets its time from, and follows the chain of NTP servers back to their master time source. If given no arguments, it starts with localhost. Here is an example of the output from ntptrace: % ntptrace localhost: stratum 4, offset 0.0019529, synch distance 0.144135 server2ozo.com: stratum 2, offset 0.0124263, synch distance 0.115784 usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB' On each line, the fields are (left to right): the host name, the host stratum, the time offset between that host and the local host (as mea- sured by ntptrace ; this is why it is not always zero for localhost ), the host synchronization distance, and (only for stratum-1 servers) the reference clock ID. All times are given in seconds. Note that the stratum is the server hop count to the primary source, while the syn- chronization distance is the estimated error relative to the primary source. These terms are precisely defined in RFC-1305. OPTIONS
-d Turns on some debugging output. -n Turns off the printing of host names; instead, host IP addresses are given. This may be useful if a nameserver is down. -r retries Sets the number of retransmission attempts for each host (default = 5). -t timeout Sets the retransmission timeout (in seconds) (default = 2). -v Prints verbose information about the NTP servers. AUTHORS
David L. Mills (mills@udel.edu) BUGS
This program makes no attempt to improve accuracy by doing multiple samples. BSD
March 29, 2000 BSD
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