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Shell Programming and Scripting
Read multiple lines at a time from file
Post 302828927 by anbu23 on Wednesday 3rd of July 2013 01:42:47 PM
07-03-2013
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Could any one tell me how to read and match multiple lines in perl? Did this code below still work in this situation?
while (<FILE>) {
if (/ /) {
}
}
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Hi,
Currently I am coding up a nasty way of reading file input using *cat* rather than *read*. My text input looks like
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cat foo.txt|while read line
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I am trying to create a script which will read 2 files and use the lines of file 1 for each line on file 2.
here's my sample code
cat $SBox |
while read line
do
cat $Date |
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Hello community,
what I need to do is read 2 rows at time from a file. I have this simple solution:
File to read:
LINE1
LINE2
LINE3
LINE4
LINE5
LINE6
LINE7
LINE8Read routine:#!/bin/ksh
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GM,
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How to read multiple files at simultaneously? (1 Reply)
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LEARN ABOUT DEBIAN
postgreyreport
POSTGREYREPORT(1) User Contributed Perl Documentation POSTGREYREPORT(1) NAME
postgreyreport - Fatal report for Postfix Greylisting Policy Server SYNOPSIS
postgreyreport [options...] -h, --help display this help and exit --version display version and exit --user=USER run as USER (default: postgrey) --dbdir=PATH find db files in PATH (default: /var/lib/postgrey) --delay=N report triplets that did not try again after N seconds (default: 300) --greylist-text=TXT text to match on for greylist maillog lines --skip_pool Skip report for 'subscriber pools' ( last 2 octets of IP found in PTR name ) --skip_dnsbl=RBL RBL server to query and skip reporting for any listed hosts (SLOW!!) --skip_clients=FILE PTR or IP or REGEXP of clients to skip in report --match_clients=FILE *ONLY* report if fatal *AND* PTR/IP of client matches --show_tries display the number of attempts failed triplets made in first column --show_time show entry time in maillog (single line only) --tab use tabs as separators for easy cut(1)ting --nosingle_line display sender/recipients grouped by ptr - ip --separate_by_subnet=TXT display TXT for every new /24 (ex: "================= " ) --separate_by_ip=TXT display TXT for every new IP (ex: " ") --check_sender=LIST one or more of: mx,mx/24,a,a/24 does DNS/A lookups for sender @domain and compares sending IP if match displays "MX" "A" or "MX/24" or "A/24" depending on LIST Note that --(skip|match)_clients can be specified multiple times and there are no default files. Same rules apply as postgrey's --whitelist-clients, see postgrey doc for more info. --skip_dnsbl can also be specified multiple times to query multiple DNSBL servers. DESCRIPTION
postgreyreport opens postgrey.db as read-only; reads a maillog via STDIN, extracts the triplets for any Greylisted lines and looks them up in postgrey.db. if the difference in first and last time seen is less than --delay=N then the triplet is considered fatal and displayed to STDOUT The report sorts by client IP address Note: unless you are using --lookup_by_subnet or excluding all known MTA pools you will likely have false fatal reports for "BigISPs". A message that was tried from every IP in SMTP pool before making it through will show up in the report for all of the attempted source IPs USAGE It is best to run postgreyreport against a maillog that is at least several hours old (yesterdays?) ( you be the judge on how old is acceptable ). if you run the report against a live maillog you are not giving legit MTA's enough time to try again and you will have lots of inaccurate information. o Ex usage: zcat /var/log/maillog.0.gz | ./postgreyreport [options] > postgreyreport.log or zcat /var/log/maillog.0.gz | ./postgreyreport --nosingle_line --check_sender=mx,a --separate_by_subnet=":================== " # 94 "=" total, some were omitted for clarity o Ex Output: ( POD wrapping will mess this up, view source ) :============================================================================================ unknown 4.29.43.31 marissa_mcclendonuu@abit.com.tw user1@recipient1.com jake_meyerdt@ali.com.tw user2@recipient1.com jenny_banks_sh@translate.ru user1@recipient2.com rvazquezpo@ali.com.tw user3@recipient1.com aep@notimexico.com user2@recipient1.com brittneystanley_ei@cetra.org.tw user2@recipient1.com brendasheehan_cw@lib.ru user2@recipient1.com :============================================================================================ lsanca1-ar5-127-189.biz.dsl.gtei.net 4.33.127.189 A fokkensr@lsanca1-ar5-127-189.biz.dsl.gtei.net user2@recipient1.com cyxlfrfwciercu@publicist.com user3@recipient4.com :============================================================================================ smtpout.mac.com 17.250.248.83 do_not_reply@apple.com user4@recipient5.com smtpout.mac.com 17.250.248.88 MX legituser@mac.com user6@recipient7.com :============================================================================================ HISTORY
1.14.3 20100321 Some additions, Leonard den Ottolander <leonard.den.ottolander.nl> New option: --tab Use tabs as separator in single line mode New option: --show_time Show entry time in maillog in single line mode 1.14.2 20040715 BUGFIX: (automatic) lookup-by-subnet support was broken, fixed. BUGFIX: corrected a few spelling errors new Option: --skip_pool Skip report for 'subscriber pools' 1.14.1 20040712 Changed --return-string to --greylist-text to match postgrey new Option: --skip_clients=FILE new Option: --match_clients=FILE new Option: --skip_dnsbl=RBL.DNS.NAME All 3 of the new options can be specified multiple times. Updated do_*_subsititions again to match postgrey 1.11.1 20040701 missing keys from DB are considered fatal triplets and included in report Changed --delay testing from "greater than" to "greater than or equal to" Fixed --help and --man switches Removed setuid Notice 1.6.4 20040618 Initial Public Version (postgrey/contrib) AUTHOR
Tom Baker <tbaker@bakerfl.org> perl v5.14.2 2012-02-03 POSTGREYREPORT(1)