"awk" personal use of the method to record

Awk is broad and profound, and I have not been deeply studied in the work except for simple usage.

Another, attach several blog articles, follow up may update this list:

1. Linux awk Command Detailed http://blog.chinaunix.net/uid-25120309-id-3801250.html

2. Http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html

   
   

"AWK" Removes the space:awk  ' { result=gensub (/ /, "", 1);p rint result } ' print a section of content:awk  ' {print  $7} '  access.log statistics IP number:awk  ' {cs[$1]+=1} end {for (C IN CS)  print  CS[C], C} '  access.log |sort -nr print the last column:awk  ' {print $8    '   $NF}   '  access.log statistics size:awk  ' {print $10  '     $1  '    '  $7} '  access.log|awk  ' {b+=$1} end {print b/1024/1024  " MB"} ' stats TCP status: Netstat  -n | awk  '/^tcp/ {++state[$NF]} end {for (key in state)   Print key, "\ T", State[key]} ' statistical log in HTTP status code zcat 2013-07-15-0000-2330_cs.ecqun.com.*|awk  ' {print  $9} ' |sort|uniq -c|sort -nr|more statistic log format the last line is the corresponding data of the source station IP zcat 2013-07-15-*|awk  ' $7~/ cs.ecqun.com/{print  $NF} ' |sort|uniq -c|sort -nr| 18-point access to cs.ecqun.com, status code 200 data, print response time and source station address in head statistics log zcat 2013-07-15-18*|grep cs.ecqun.com|awk  ' $9== "{print $ (NF-7), $NF} ' |sort|uniq -c|sort -nr| More statistics delay more than 100ms requests zcat 2013-07-15-18*|grep cs.ecqun.com|awk  ' $9== "0" &&$ (NF-7) >100  {print $ (NF-7)} ' |sort|uniq -c|sort -nr|morenr: The number of records that the entire script is currently reading, which is the line number, starting with 1. As the number of files read, it always accumulates. FNR: Same as NR, but relative to the number of file records currently being read. Each time you start reading a file, it starts at 1 and is equivalent to the line number. After reading a file will clear 0, the new file will start from 1. http://in.sdo.com/?p=1054 Statistics Http code is 502 of the number, IP assumes the following file:cs.502 :  statistics appear 502 times and IP, in the format of "Times    ip "cs.502.ip :  filter IP from cs.502, in the format" IP "cs.502.country :  use Qqwry for IP-to-geo conversion, in the format" ip    Location "The need now is to combine cs.502 and Cs.502.country awk  ' Nr==fnr {a[$2]=$0;next} nr>fnr {print  a[$1]  " " $  cs.502 cs.502.country >cs.502.log calculation http code  The relative total proportion of the overseas is how much test.all  content is:46255 0967 504218 502test.oversea  content is:1171 0408  504205 502awk  ' nr==fnr {a[$2]=$1;next} nr>fnr {printf  '%.2f%  ",  $1/a[$2]*100;print $2} '  test.all test.oversea 2.53% 042.19%  50494.04% 502 calculated percentage:echo 55 4001638 |awk  ' {printf  "%.4f%\n", $1/$2*100} ' Sort:123123421432904920342390492304920394023209402394023940234awk  ' {print $0,substr ($0,length) according to the latter 3 bits ) -2,3} '  x.txt |sort -n -k 2 | awk  ' {print $1} ' sed -r  ' s/(. *) ((.) {3}) /\1|\2/'  test.txt |sort -n -k 2 -t \| |sed  ' s/|//g ' go heavy  awk   '!a[$1]++ '  test.log

"awk" personal use of the method to record