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我有以下代码将ENV变量传递给AWK。AWK传递ENV变量
awk 'function pr(sp, k, v){ # prints key-value pair with indentation
printf "%s\047%s\047: \047%s\047,\n",sp,k,v;
}
BEGIN {
db_user = ENVIRON["DB_USER"]
db_pass = ENVIRON["DB_PASS"]
db_name = ENVIRON["DB_NAME"]
}
/sqlite/{ sub(/sqlite[0-9]*/,"mysql",$0) }
/NAME/{ sp=substr($0,1,index($0,"\047")-1);
print sp$1" \047db_name\047,";
pr(sp,"USER", db_user); pr(sp,"PASSWORD", db_pass);
pr(sp,"HOST","localhost"); pr(sp,"PORT",""); next
}1'
我可以将db_name替换为ENV变量。
db_name = django
我的结果是:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'db_name',
'USER': 'django',
'PASSWORD': 'django',
'HOST': 'localhost',
'PORT': '',
}
}
什么是_not_然后工作? – Inian
print sp $ 1“\ 047db_name \ 047,”;不会传递给Django一个值,但只需传递db_name – Ankh2054
@ Ankh2054:是的,因为到'print'的字符串完全在引号内,变量值不会被扩展。使用'printf' – Inian