[英]awk command has different behaviors when executing the exact same code. Why?
I have created a little shellscript that is capable of receiving a list of values such as "MY_VAR_NAME=var_value MY_VAR_NAME2=value2 ...", separated by spaces only. 我创建了一个小shellscript,它能够接收值列表,例如“ MY_VAR_NAME = var_value MY_VAR_NAME2 = value2 ...”,仅用空格分隔。 There should be also the possibility to use values such as MY_VAR_NAME='' or MY_VAR_NAME= (nothing).
还应该可以使用诸如MY_VAR_NAME =''或MY_VAR_NAME =之类的值(无)。
These values are then used to change the value inside a environment variables file, for example, MY_VAR_NAME=var_value would make the script change the MY_VAR_NAME value inside the .env file to var_value, without changing anything else about the file. 这些值然后用于更改环境变量文件中的值,例如,MY_VAR_NAME = var_value将使脚本将.env文件中的MY_VAR_NAME值更改为var_value,而无需更改文件的其他任何内容。
The env file has the following configuration: env文件具有以下配置:
NODE_ENV=development
APP_PATH=/media
BASE_URL=http://localhost:3000
ASSETS_PATH=http://localhost:3000
USE_CDN=false
APP_PORT=3000
WEBPACK_PORT=8080
IS_CONNECTED_TO_BACKEND=false
SHOULD_BUILD=false
USE_REDUX_TOOL=false
USE_LOG_OUTPUT_AS_JSON=false
ACCESS_KEY_ID=
SECRET_ACCESS_KEY=
BUCKET_NAME=
BASE_PATH=
MIX_PANEL_KEY=
RDSTATION_KEY=
RESOURCE_KEY=
SHOULD_ENABLE_INTERCOM=false
SHOULD_ENABLE_GTM=false
SHOULD_ENABLE_UTA=false
SHOULD_ENABLE_WOOTRIC=false
I have debugged my script, and found out that this is the point where sometimes it has a problem 我调试了脚本,发现这有时会出现问题
cat .envtemp | awk -v var_value="$VAR_VALUE" \
-v var_name="$VAR_NAME" \
-F '=' '$0 !~ var_name {print $0} $0 ~ var_name {print $1"="var_value}' | tee .envtemp
This piece of code sometimes outputs to .envtemp the proper result, while sometimes it just outputs nothing, making .envtemp empty 这段代码有时会向.envtemp输出正确的结果,而有时则什么也不输出,从而使.envtemp为空
The complete code i am using is the following: 我正在使用的完整代码如下:
function change_value(){
VAR_NAME=$1
VAR_VALUE=$2
cat .envtemp | awk -v var_value="$VAR_VALUE" \
-v var_name="$VAR_NAME" \
-F '=' '$0 !~ var_name {print $0} $0 ~ var_name {print $1"="var_value}' | tee .envtemp
ls -l -a .env*
}
function manage_env(){
for VAR in $@
do
var_name=`echo $VAR | awk -F '=' '{print $1}'`
var_value=`echo $VAR | awk -F '=' '{print $2}'`
change_value $var_name $var_value
done
}
function main(){
manage_env $@
cat .envtemp > .env
exit 0
}
main $@
Here is an example script for recreating the error. 这是用于重新创建错误的示例脚本。 It does not happen every time, and when it happens, it is not always with the same input.
它不会每次都发生,并且当它发生时,并非总是具有相同的输入。
#!/bin/bash
ENV_MANAGER_INPUT="NODE_ENV=production BASE_URL=http://qa.arquivei.com.br ASSETS_PATH=https://d4m6agb781hapn.cloudfront.net USE_CDN=true WEBPACK_PORT= IS_CONNECTED_TO_BACKEND=true ACCESS_KEY_ID= SECRET_ACCESS_KEY= BUCKET_NAME=frontend-assets-dev BASE_PATH=qa"
cp .env.dist .env
#Removes comment lines. The script needs a .envtemp file.
cat .env.dist | grep -v '#' | grep -v '^$' > .envtemp
./jenkins_env_manager.sh ${ENV_MANAGER_INPUT}
Have you tried use two files: 您是否尝试过使用两个文件:
mv .envtemp .envtemp.tmp
cat .envtemp.tmp | awk ... | tee .envtemp
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.