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有些文件与我想使用 bash 脚本执行环境变量替换的模式匹配。但是我似乎无法让它工作。
我有点困惑为什么这会导致所有目标文件都是空的:
for file in /path/to/files/*.yml; do envsubst '${VAR1}' < "$file" > "$file" done
事实证明envsubst无法处理相同的源和目标。所以新文件必须写在别处,然后把原来的替换掉。
envsubst
for file in /path/to/files/*.yml; do envsubst '${VAR1}' < $file > "$file.modified" rm $file mv $file.modified $file done