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Vyhledávání v Logách a základní použití RE ..

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nettezzaumana: ps. zaroven prosim, aby si ucastnici zdejsich prispevku prosli sve komentare a ty s nulovou ci nizkou informacni hodnotou smazali .. diky jedna se zejmena o :: MacHala, Duffy, Czario, bodie a ntz pps. prectete si muj predchozi prispevek, stahnete script a zacnete procvicovat ;)

karel kudrna: Mega dobrý, mega mě bolí hlava, budu si to muset vytisknout. Hodil by se k tomu i seznam literatury, nejlíp pro amatéry...asi. P.S. geniální na tom je že po letech googlení mi věta "grep je filtr" objasnila hafo věcí... ;D

nettezzaumana: obcas se setkame s tim, ze potrebujeme vytridit z nejakeho souboru napr. cesty s mezerama :: Vytvoril jsem si soubor playlist.m3u, ktery ma nasledujici strukturu :: --- Kód: ---nettezzaumana@kokina:~/Desktop> cat playlist.m3u | head -n 25 #EXTM3U #EXTINF:164,Resist ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/01 Resist.mp3 #EXTINF:214,Switchback ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/02 Switchback.mp3 #EXTINF:236,Salvation ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/03 Salvation.mp3 #EXTINF:223,End Of My Rope ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/04 End Of My Rope.mp3 #EXTINF:232,All For None ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/05 All For None.mp3 #EXTINF:172,Breakdown ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/06 Breakdown.mp3 #EXTINF:208,Inner Fear On ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/07 Inner Fear On.mp3 #EXTINF:225,Abandon In Place ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/08 Abandon In Place.mp3 #EXTINF:208,Skin ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/09 Skin.mp3 #EXTINF:168,Camouflage ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/10 Camouflage.mp3 #EXTINF:225,Decline ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/11 Decline.mp3 #EXTINF:292,Cycle Of Abuse ../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/12 Cycle Of Abuse.mp3 --- Konec kódu --- pokud z toho potrebujeme dostat nejak pouzitelne cesty, mame samozrejme vice moznosti, pricemz ja se budu drzet dvou zakladnich: a) escapovat mezery b) strcit do uvozovek a) escapovani mezer obstara nasledujici vyraz :: 's/\ /\\\ /g'  // 'g' na konci znamena 'global', pokud by chybelo, byla by nahrazena pouze prvni mezera .. je zde samozrejme chytak, protoze neni mezera jako mezera, a my musime pocitat s celou rodinou bilych znaku aka tabelator aj, takze spravne bude nas vyraz vypadat takto :: 's/\s/\\\ /g' // '\s' = bily znak, takze :: --- Kód: ---nettezzaumana@kokina:~/Desktop> cat playlist.m3u | sed '/^#/d;s/\s/\\\ /g' | head -n 25 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/01\ Resist.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/02\ Switchback.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/03\ Salvation.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/04\ End\ Of\ My\ Rope.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/05\ All\ For\ None.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/06\ Breakdown.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/07\ Inner\ Fear\ On.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/08\ Abandon\ In\ Place.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/09\ Skin.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/10\ Camouflage.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/11\ Decline.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/12\ Cycle\ Of\ Abuse.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/13\ Dogs\ Of\ War.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ New\ World\ Disorder/14\ New\ World\ Disorder(feat.Sticky\ Fingas).mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/01\ Shades\ Of\ Grey.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/02\ What\ Makes\ Us\ Tick.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/03\ Authority.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/04\ Urban\ Discipline.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/05\ Modern\ Democracy.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/06\ Love\ Denied.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/07\ Bussines.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/08\ Tales\ From\ The\ Hardside.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/09\ Betters\ Days.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/10\ Victory.mp3 ../../../mnt/data/+MUSIC/Biohazard/Biohazard\ -\ No\ Holds\ Barred\ (LIVE\ in\ EU)/11\ Survival\ Of\ The\ Fittest.mp3 --- Konec kódu --- << pripominam, ze zde jsou vyrazy dva (sed 'RE1;RE2), pricemz ten prvni '/^#/d' jest emulace grepu a maze nam vsechny radky zacinajici '#' b) strceni cesty do uvozovek obstara nasledujici vyraz: 's/^\(.*\)$/\"\1\"/' // pricemz obsah v () se zpetne vola jako '\<index_cislo>' a v perlu jako $<index_cislo>, takze :: --- Kód: ---nettezzaumana@kokina:~/Desktop> cat playlist.m3u | sed '/^#/d;s/^\(.*\)$/\"\1\"/' | head -n 25 "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/01 Resist.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/02 Switchback.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/03 Salvation.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/04 End Of My Rope.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/05 All For None.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/06 Breakdown.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/07 Inner Fear On.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/08 Abandon In Place.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/09 Skin.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/10 Camouflage.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/11 Decline.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/12 Cycle Of Abuse.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/13 Dogs Of War.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/14 New World Disorder(feat.Sticky Fingas).mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/01 Shades Of Grey.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/02 What Makes Us Tick.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/03 Authority.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/04 Urban Discipline.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/05 Modern Democracy.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/06 Love Denied.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/07 Bussines.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/08 Tales From The Hardside.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/09 Betters Days.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/10 Victory.mp3" "../../../mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/11 Survival Of The Fittest.mp3" --- Konec kódu --- Vetsinu z Vas jiste napadlo, jak dostat pryc onen podivny zacatek '../../..', reseni je jednoduche :: 's/^\(\.\.\/\)\+/\//' .. misto abychom 'otrocky' psali cely zacatek aka substituci 's/VYRAZ1/VYRAZ2/', jsme provedli :: "nahrad (s) libovolne dlouhou (VYRAZ)+ posloupnost vyrazu '../' za '/', takze :: --- Kód: ---nettezzaumana@kokina:~/Desktop> cat playlist.m3u | sed '/^#/d;s/^\(\.\.\/\)\+/\//;s/^\(.*\)$/\"\1\"/' | head -n 25 "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/01 Resist.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/02 Switchback.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/03 Salvation.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/04 End Of My Rope.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/05 All For None.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/06 Breakdown.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/07 Inner Fear On.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/08 Abandon In Place.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/09 Skin.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/10 Camouflage.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/11 Decline.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/12 Cycle Of Abuse.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/13 Dogs Of War.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - New World Disorder/14 New World Disorder(feat.Sticky Fingas).mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/01 Shades Of Grey.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/02 What Makes Us Tick.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/03 Authority.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/04 Urban Discipline.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/05 Modern Democracy.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/06 Love Denied.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/07 Bussines.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/08 Tales From The Hardside.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/09 Betters Days.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/10 Victory.mp3" "/mnt/data/+MUSIC/Biohazard/Biohazard - No Holds Barred (LIVE in EU)/11 Survival Of The Fittest.mp3" --- Konec kódu --- << nam dopadne takto .. enjoy by ntz ;)

nettezzaumana: --- Kód: ---#!/bin/bash # # stahne do aktualni slozky celej serial rodinka od kaisera a labuse .. # regards by ntz (wget -O - http://www.radio.cz/cz/rodinka 2>/dev/null | grep '/cz/rodinka/' | grep '^<TD' | sed 's/^.*href="\(.[^"]*\).*$/\1/' | while read line; do wget -t 3 -T 30 -O - http://radio.cz$line 2>/dev/null; done ) >/tmp/rodinka.txt cat /tmp/rodinka.txt | sed 's@</TR>@\n@g'| sed '/>[0-9][0-9]*</!d' | sed 's/^.*>\([0-9][0-9]*<.*\)/\1/' | sed 's@\(class\|bgcolor\|width\|href\)=".[^"]*"@@g' | sed 's@<\?TD\ *>@@g' | sed 's@^\([0-9][0-9]*</.[^<]*\).*@\1@;s@&#[0-9]*;@@g;s@^273907.*@728</273907@;s@/@@' | while read line; do echo $line | sed 's/^\([0-9]<\)\(.*\)$/00\1\2/;s/^\([0-9][0-9]<\)\(.*\)$/0\1\2/'; done | while read line; do wget -t 5 -T 30 --retry-connrefused http://radio.cz/rodinka-download/$(echo $line | sed 's/<.*//')-32.mp3 -O "$(echo $line | sed 's/<.*//')-$(echo $line | sed 's/.*<//').mp3"; done --- Konec kódu --- .. stahujte prosim az vecer

nettezzaumana: --- Citace ---$ ls -1 Bad Religion - Against the Grain (1990, V0) Bad Religion - Back To the Known (1984) Bad Religion - Bad Religion (1981) Bad Religion - Generator (1992, V0) Bad Religion - How Could Hell Be Any Worse (1982, V0) Bad Religion - Into the Unknown (1983, V0) Bad Religion - New Maps of Hell (2007, V0) Bad Religion - No Control (1989, V0) Bad Religion - No Substance (1998, V0) Bad Religion - Recipe For Hate (1993, V0) Bad Religion - Stranger Than Fiction (1994, V0) Bad Religion - Suffer (1988, V0) Bad Religion - The Empire Strikes First (2004, V0) Bad Religion - The Gray Race (1996, V0) Bad Religion - The New America (2000, V0) Bad Religion - The Process Of Belief (2002, V0) B-Sides and Rarities Covers By Bad Religion Suffer Demos $ ls -1 | grep ^Bad | while read line; do mv "$line" "$(echo $line | perl -ne 'next if ! s@^(.[^-]*)-(.*)\ \((\d+).*@$1\[$3\]$2@; print')"; done $ ls -1 Bad Religion [1981] Bad Religion Bad Religion [1982] How Could Hell Be Any Worse Bad Religion [1983] Into the Unknown Bad Religion [1984] Back To the Known Bad Religion [1988] Suffer Bad Religion [1989] No Control Bad Religion [1990] Against the Grain Bad Religion [1992] Generator Bad Religion [1993] Recipe For Hate Bad Religion [1994] Stranger Than Fiction Bad Religion [1996] The Gray Race Bad Religion [1998] No Substance Bad Religion [2000] The New America Bad Religion [2002] The Process Of Belief Bad Religion [2004] The Empire Strikes First Bad Religion [2007] New Maps of Hell B-Sides and Rarities Covers By Bad Religion Suffer Demos --- Konce citace --- ## dostaneme rourou vystup prikazu do perlu (viz. `perl --help` pro seznam parametru) echo $line | perl -ne \ ## tohle tady bylo defakto zbytecne, znamena to, ze cyklus while(<>) skoci na dalsi obeh pokud se neaplikuje RE dale 'next if ! \ ## dostaneme do *groups jednotlive casti radku a ty pak ve druhe casti preskladame jak potrebujeme .. ## v perlu netreba escapovat () a lze pouzit rozsireni jako \d apod .. viz. `man perlre` s@^(.[^-]*)-(.*)\ \((\d+).*@$1\[$3\]$2@; \ ## tisk nakonec print'

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