sed 变量替换

echo $(pwd)$0 | sed "s/\/1.sh//" | sed "s/\.//" | sed "s/\/\//\//" | sed "s,^$(pwd)/home,\/home,g"

变量替换，前面要加正则

C=$(echo $(pwd)$0 | sed "s/\/1.sh//" | sed "s/\.//" | sed "s/\/\//\//" | sed "s,^$(pwd)/home,$(pwd)/sasa,g")

变量替换变量也可以

b=bbbb/bbbb

在进行替换呢？

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echo "aaaa"| sed -n "s/aaaa/$b/p"
sed:-e expression #1, char 13: unknown optionto `s

？如何解决呢；$b中的/被用作了s命令匹配

将sed中/ 替换成# 就行了

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echo "aaaa"| sed -n "s#aaaa#$b#p"
bbbb/bbbb