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sed 包含特殊字符的大字符串

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sed 包含特殊字符的大字符串

我有一个字符串，我想在脚本中替换它以放置文件的实际路径，因此：我的问题是该字符串里面有特殊字符

Dir=pwd
old=simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='path/simulation.foam')
new=simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='${Dir}/simulation.foam')

我首先要引用所有内容：

old='simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='path/simulation.foam')'
new='simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='${Dir}/simulation.foam')'

但在网上查找后问题仍然存在，我发现了这一点：https://stackoverflow.com/questions/15783701/which-characters-need-to-be-escaped-when-using-bash 其中提到我应该用“反斜杠”来转义“，所以我用“反斜杠”替换了字符串的内部“

答案1

我通过在 seq 行中使用 | 代替 / 来解决：

sed -i "19s|simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='PATH/simulation.foam')|simulationfoam = OpenFOAMReader(registrationName='simulation.foam', FileName='$(pwd)/simulation.foam')|" ./code.py

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