AWK替换问题 - V2EX
Home Sign Up Sign In
Distributions
Ubuntu
Fedora
CentOS
中文资源站
网易开源镜像站
david_lee_cn
V2EX    Linux

AWK替换问题

  •   
  •   david_lee_cn Feb 17, 2012 6442 views
    This topic created in 5202 days ago, the information mentioned may be changed or developed.
    原始文本foo.txt内容
    IMSI=8671200001;
    ISDN=8612345;
    IMSI=8671200001;
    ISDN=8612345;
    IMSI=8671200001;
    ISDN=8612345;
    IMSI=8671200001;


    cat foo.txt | awk '{
    if($0 ~ /IMSI=/ {
    split($0,imsi_ary,"=")
    imsi=gsub(/;/,,imsi_ary[2])
    }
    print imsi
    }'

    问什么输出是
    1
    1
    1

    而不是想要的
    8671200001
    8671200001
    8671200001
  • IMSI
  • IMSI
    14 replies    1970-01-01 08:00:00 +08:00
    david_lee_cn
        1
    david_lee_cn  
    OP
       Feb 17, 2012
    思维定势。

    imsi=gsub(/;/,,imsi_ary[2]) 实际得到gsub执行结果 1 或者0。

    直接gsub()即可改变imsi_ary[2]的值。

    closed。
    ufo22940268
        2
    ufo22940268  
       Feb 21, 2012
    awk的文档真是难懂阿，每次man awk都一头雾水
    gastlygem
        3
    gastlygem  
       Feb 21, 2012
    @ufo22940268 info awk 会让你雾水更多~
    ufo22940268
        4
    ufo22940268  
       Feb 21, 2012
    @gastlygem 咦，info awk和man awk显示的信息不是一样的吗？
    kojp
        5
    kojp  
       Feb 21, 2012
    Awk堪称很 锋利的 ! 尤其是对文本的处理 ...
    gastlygem
        6
    gastlygem  
       Feb 21, 2012
    @ufo22940268 如果你用gawk的话，info给你的是一本书……
    likuku
        7
    likuku  
       Feb 21, 2012
    grep "8671200001" | awk -F "=" '{print $2}' | awk -F ";" '{print $1}'
    iwinux
        8
    iwinux  
       Feb 21, 2012
    sed -e "s/\(IMSI\|ISDN\)=\([0-9]\+\);/\2/"
    iwinux
        9
    iwinux  
       Feb 21, 2012
    Sorry，应该是 grep "IMSI" | sed -e "s/\([0-9]\+\)/\1/"
    laiwei
        10
    laiwei  
       Feb 21, 2012 via Android
    grep ‘IMSI’ foo.txt|cut -d"=" -f2

    或者
    grep ‘IMSI’ foo.txt|awk -F "=" "{print $2}"

    或者
    awk -F "=" "/$1='IMSI'/{print $2}"
    Echoldman
        11
    Echoldman  
       Feb 21, 2012
    看成了“AFK”。。
    eric_q
        12
    eric_q  
       Feb 21, 2012
    这里用sed应该更省力些，除了@iwinux的写法，还可以这么写：
    cat foo.txt|grep -v ISDN|sed -e 's/IMSI\=//' -e's/\;//'
    vz33
        13
    vz33  
       Mar 18, 2012
    awk 'BEGIN{FS="=|;"}{if ($1=="IMSI")print $2}' foo.txt
    polyahu
        14
    polyahu  
       Mar 23, 2012
    grep -oP '(?<=IMSI=)\d+' foo.txt
    About     Help     Advertise     Blog     API     FAQ     Solana     895 Online   Highest 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 44ms UTC 20:22 PVG 04:22 LAX 13:22 JFK 16:22
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86