删除搜索字符串旁边的单词

Question

如何在搜索字符串后删除1个字？ 我可以删除搜索词，但不能删除之后的词，即“utf8”

# echo "varchar(255) CHARACTER SET utf8,"
varchar(255) CHARACTER SET utf8,

# echo "varchar(255) CHARACTER SET utf8," |  sed 's/ CHARACTER SET[^ ]* / /g'
varchar(255) utf8,

预期产出：

varchar(255) ,

Answer 1

echo "varchar(255) CHARACTER SET utf8," |  sed 's/ CHARACTER SET [[:alnum:]]\+/ /g'

Answer 2

你的意思是？

echo "varchar(255) CHARACTER SET utf8," |  sed 's/ CHARACTER SET[ a-z0-9,]*/ /g'

输出

varchar(255)

Answer 3

这可能适合你（GNU sed）：

echo "varchar(255) CHARACTER SET utf8," |  sed 's/ CHARACTER SET \w*/ /g'

Answer 4

echo“varchar（255）CHARACTER SET utf8，aa”| sed's / CHARACTER SET。*，/ / g'