Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: scripting help with bash and awk
Top Forums Shell Programming and Scripting scripting help with bash and awk Post 302321131 by garethsays on Saturday 30th of May 2009 10:18:43 AM
Old 05-30-2009
here is my attempt...a very ugly script and not very portable but seems to do the job now.....
thanks for your input....all sorted now....thanks

fold input_file| egrep "^ [0-2]" > tides1
nl tides1 > tides2
awk 'BEGIN{print "key key"
print "day hourmin tide" }
{printf "%d %s%s %s\n",($1/73 + 152), substr($2,1,2),substr($2,4,5), $3}' tides2 > output_file
rm tides1 tides2

-----Post Update-----

here is my attempt...a very ugly script and not very portable but seems to do the job now.....
thanks for your input....all sorted now....thanks

fold input_file| egrep "^ [0-2]" > tides1
nl tides1 > tides2
awk 'BEGIN{print "key key"
print "day hourmin tide" }
{printf "%d %s%s %s\n",($1/73 + 152), substr($2,1,2),substr($2,4,5), $3}' tides2 > output_file
rm tides1 tides2
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

bash/awk scripting help (creating OLD new users)

I need some help making this script... I guess I'm having trouble even interpretating what to even get started on... I need to create a script that will search a given directory (typically a user's home directory, but not necessarily) as provided on the command line and any sub-directors for... (2 Replies)
Discussion started by: Jukai
2 Replies

2. Shell Programming and Scripting

bash scripting help

hi all i'm trying to get a script working upon connection with pppd According to docu this happens ina clean environment with a couple of variables set, namely $1,$2,... To be able to execute the statements i included a path statement but i think i'm running into trouble with the variables -... (6 Replies)
Discussion started by: jimjones
6 Replies

3. Shell Programming and Scripting

bash scripting help!!

Hi, can anyone help me with my scrip please. I wanted do following tasks: 1. List all the directory 2. A STDIN to ask user to enter a directory name from listed directories 3. command to check if the directory exists( or a command to validate if the user entered a valid directory name)... (3 Replies)
Discussion started by: eminjan
3 Replies

4. Shell Programming and Scripting

please help with Bash Scripting????

Hi, can anyone help me with my scrip please. I wanted do following tasks: 1. List all the directory 2. A STDIN to ask user to enter a directory name from listed directories 3. command to check if the directory exists( or a command to validate if the user entered a valid directory name) ... (2 Replies)
Discussion started by: eminjan
2 Replies

5. Shell Programming and Scripting

bash scripting and awk help

Hey guys, i am fairly new to scripting and I am trying to write a script that takes a comma delimited file as input. I am trying to figure out a way to determine if $1 and $3 exist on a line (basically a hostname and ip address) and if true do the following, resolve the hostname to ip. sample... (6 Replies)
Discussion started by: streetfighter2
6 Replies

6. Homework & Coursework Questions

bash,scripting

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: i have to do this but i am confused, Create a file containing the bash functions which perform the... (1 Reply)
Discussion started by: CRAZYLITTLELOU
1 Replies

7. Shell Programming and Scripting

bash scripting help

have this code but when i run it i get this error ./pulse: line 2: and here is the code #!/bin/bash if ; then pulseaudio -k; fi what am i doing wrong thanks Adam (5 Replies)
Discussion started by: ab52
5 Replies

8. Shell Programming and Scripting

Bash scripting

Try to imagine a flag: nnnnx nnnxx nnxxx nxxxx now imagine how it will output: 4 times the "n"and 1 times "x" 3 times "n"and" 2 times" x " .. etc. .. rhombus is the same only instead of "n" is there gap "and " x "is a few times to form the correct shape Can you help... (3 Replies)
Discussion started by: krcek12
3 Replies

9. Shell Programming and Scripting

bash scripting help

Hi Guys i have a <script?> that spits out the location of each printer using snpget here is the code for i in `sed -n '/Start Printer/,/End Printer/p' /hosts/blah/etc/dhcp/hosts.conf | awk '!/^#/ {print $2}' | egrep -v \... (2 Replies)
Discussion started by: ab52
2 Replies

10. Shell Programming and Scripting

bash scripting

same script: 1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit. 2- also i want to add # in front of the following lines in... (0 Replies)
Discussion started by: lamoul
0 Replies

LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::prohibitlvaluesubstr

Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocumPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr - Use 4-argument "substr" instead of writing "substr($foo, 2, 6) = $bar".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages the use of "substr()" as an lvalue, instead recommending that the 4-argument version of "substr()" be used instead.

	   substr($something, 1, 2) = $newvalue;     # not ok
	   substr($something, 1, 2, $newvalue);      # ok

       The four-argument form of "substr()" was introduced in Perl 5.005.  This policy does not report violations on code which explicitly
       specifies an earlier version of Perl (e.g. "use 5.004;").

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       "substr" in perlfunc (or "perldoc -f substr").

       "4th argument to substr" in perl5005delta

AUTHOR

       Graham TerMarsch <graham@howlingfrog.com>

COPYRIGHT

       Copyright (c) 2005-2011 Graham TerMarsch.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2014-06-09	   Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)
All times are GMT -4. The time now is 05:18 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy