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Awk

Fri, 26 Feb 2021 00:00:00 +0000

Cheat Sheet

指定分隔符

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awk -F "," '{print Awk}' ./filename.txt

多个 field 输出，使用 ","

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# 输入
#figure-extract cuda12.2-1-move-app-v1 a74c57ab7c82 3 days ago 7.16GB
#table-extract cuda12.2-1-move-app 358de070777c 3 days ago 16.4GB
awk '{print $1,":",$2}'
# 输出
# figure-extract:cuda12.2-1-move-app-v1
# table-extract:cuda12.2-1-move-app

分隔符： -F ","

设置变量： -v

-v FS="\t"

与 unexpand 连用

unexpand 把空格转化成 tab(\t)字符

if 语句

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$ awk '{
 if ([]: >=35 && >= 35 && >= 35)
 print ,"=>","Pass";
 else
 print ,"=>","Fail";
 }' student-marks
Jones 2143 78 84 77 => Pass
Gondrol 2321 56 58 45 => Pass
RinRao 2122 38 37 => Fail
Edwin 2537 87 97 95 => Pass
Dayan 2415 30 47 => Fail