envsubst是否有转义字符? [英] is there an escape character for envsubst?

问题描述

是否有防止envsubst替代$VARIABLE的方法?例如，我期望像这样的东西:

Is there a way to prevent envsubst from substituting a $VARIABLE? For example, I would expect something like:

export THIS=THAT
echo "dont substitute \\\$THIS" | envsubst

让它返回

dont substitute $THIS

但是我得到了

dont substitute \THAT

这样做有转义符吗?

推荐答案

export DOLLAR='$'

export THIS=THAT
echo '${DOLLAR}THIS' | envsubst

或更清晰:

export THIS=THAT
echo '${DOLLAR}THIS' | DOLLAR='$' envsubst

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