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Shell Programming and Scripting
Two Input Lines Into Single Output Line (CSV)
Post 302541402 by svermill on Sunday 24th of July 2011 12:53:19 PM
07-24-2011
Yeah, I definitely needed a good night's sleep. So I stayed up and smoked a cigar instead! 
Anyway, with xargs using both bash and ksh, I was only getting the hostname of the very first device in the folder - nothing else (so no commas, no ntp commands, no nothin'). So I dropped xargs and did *.txt in awk. I get an output file and both 'ntp server' and 'ntp peer' commands are present. However, only my to two core devices have a single-line entry for multiple ntp matches; all others have a newline between first and second entries when there are two matches.
Now this may or may not be an interesting detail: I was unaware that my core devices actually have three 'ntp server' commands. And yes, they're strangely all on one single line in the output file. I don't see any real differences between the core configs and any of the other configs??
---------- Post updated at 10:49 AM ---------- Previous update was at 10:45 AM ----------
Hi bartus11,
Yes, I just installed ActivePerl the other day (and I believe that some stripped down/likely outdated version of Perl ships native to Mac OS X). I'm trying to ensure that I actually understand (as much as possible) what I'm doing, though, so I don't want to jump to Perl just yet - my head is too full of new stuff this weekend as it is! But I promise that once I get this other approach sorted out, I'll turn my attention to your example Perl code. It certainly looks nice and streamlined!
Thanks again to you both!
---------- Post updated at 10:53 AM ---------- Previous update was at 10:49 AM ----------
OK, I admit that I just pasted in your Perl script to see what would happen.
Here's an example of the output:
router1.txt,
router2.txt,ntp server 10.10.250.1
,
switch1.txt,ntp server 10.10.250.2
,ntp server 10.10.250.1 prefer
,
Still suffering from newline issues??
Anyway, with xargs using both bash and ksh, I was only getting the hostname of the very first device in the folder - nothing else (so no commas, no ntp commands, no nothin'). So I dropped xargs and did *.txt in awk. I get an output file and both 'ntp server' and 'ntp peer' commands are present. However, only my to two core devices have a single-line entry for multiple ntp matches; all others have a newline between first and second entries when there are two matches.
Now this may or may not be an interesting detail: I was unaware that my core devices actually have three 'ntp server' commands. And yes, they're strangely all on one single line in the output file. I don't see any real differences between the core configs and any of the other configs??
---------- Post updated at 10:49 AM ---------- Previous update was at 10:45 AM ----------
Quote:
Yes, I just installed ActivePerl the other day (and I believe that some stripped down/likely outdated version of Perl ships native to Mac OS X). I'm trying to ensure that I actually understand (as much as possible) what I'm doing, though, so I don't want to jump to Perl just yet - my head is too full of new stuff this weekend as it is! But I promise that once I get this other approach sorted out, I'll turn my attention to your example Perl code. It certainly looks nice and streamlined!
Thanks again to you both!
---------- Post updated at 10:53 AM ---------- Previous update was at 10:49 AM ----------
OK, I admit that I just pasted in your Perl script to see what would happen.
Here's an example of the output:
router1.txt,
router2.txt,ntp server 10.10.250.1
,
switch1.txt,ntp server 10.10.250.2
,ntp server 10.10.250.1 prefer
,
Still suffering from newline issues??
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LEARN ABOUT V7
ntp-wait
ntp-wait(1) User Commands ntp-wait(1) NAME
ntp-wait - Wait for ntpd to stabilize the system clock SYNOPSIS
ntp-wait [-flags] [-flag [value]] [--option-name[[=| ]value]] All arguments must be options. DESCRIPTION
ntp-wait will send at most num-tries queries to ntpd(8), sleeping for secs-between-tries after each status return that says ntpd(8) has not yet produced a synchronized and stable system clock. ntp-wait will do this quietly, unless the -v flag is provided. This can be useful at boot time, to delay the boot sequence until after ntpd -g has set the time. OPTIONS
-n number, --tries=number Number of times to check ntpd. This option takes an integer number as its argument. The default number for this option is: 100 The maximum number of times we will check ntpd to see if it has been able to synchronize and stabilize the system clock. -s secs-between-tries, --sleep=secs-between-tries How long to sleep between tries. This option takes an integer number as its argument. The default secs-between-tries for this option is: 6 We will sleep for secs-between-tries after each query of ntpd that returns "the time is not yet stable". -v, --verbose Be verbose. By default, ntp-wait is silent. With this option, ntp-wait will provide status information. -?, --help Display usage information and exit. -!, --more-help Pass the extended usage information through a pager. -v [{v|c|n --version [{v|c|n}]}] Output version of program and exit. The default mode is `v', a simple version. The `c' mode will print copyright information and `n' will print the full copyright notice. EXIT STATUS
One of the following exit values will be returned: 0 (EXIT_SUCCESS) Successful program execution. 1 (EXIT_FAILURE) The operation failed or the command syntax was not valid. 70 (EX_SOFTWARE) libopts had an internal operational error. Please report it to autogen-users@lists.sourceforge.net. Thank you. AUTHORS
Harlan Stenn NOTES
This document corresponds to version 4.2.8p13 of NTP. This manual page was AutoGen-erated from the ntp-wait option definitions. ntp (4.2.8p13) 20 Feb 2019 ntp-wait(1)