Bash: Delete characters until a certain character from String

问题

how can I delete characters from a String until a certain character with bash? Example:

"ananas1kiwi2apple1banana2tree"

shall look like this:

"apple1banana2tree"

Thank you!

回答1:

If you want to remove the substring upto 2, using bash parameter expansion:

${var#*2}

• # does non-greedy match from left, use ## for greediness

• #*2 matches and discards upto first 2 from variable var

Example:

$ var='ananas1kiwi2apple1banana2tree'
$ echo "${var#*2}"
apple1banana2tree

回答2:

Using pure bash shell parameter expansion.

$ string="ananas1kiwi2apple1banana2tree"
$ newString="${string#*2}"
$ printf "%s\n" "$newString"
apple1banana2tree

来源：https://stackoverflow.com/questions/40506782/bash-delete-characters-until-a-certain-character-from-string