curl http://beyondgrep.com/ack-2.02-single-file > ~/bin/ack && chmod 0755 !#:3
What is the meaning of !#:3, from ack installation guide?
# 3，来自ack安装指南的意思是什么?
1 个解决方案
#1
16
In bash or zsh ! denotes a history command (not a shebang line which is #!, and has nothing to do with bash or zsh as such).
在巴什或zsh !表示一个history命令(不是shebang行，而是#!)，与bash或zsh本身无关)。
!# means the entire command line typed so far, and :3 selects the third word, in this case ~/bin/ack.
!#表示到目前为止输入的整个命令行，并且:3选择第三个单词，在本例中为~/bin/ack。
So the command is equivalent to:
因此命令等价于:
curl http://beyondgrep.com/ack-2.02-single-file > ~/bin/ack && chmod 0755 ~/bin/ack
#1
16
In bash or zsh ! denotes a history command (not a shebang line which is #!, and has nothing to do with bash or zsh as such).
在巴什或zsh !表示一个history命令(不是shebang行，而是#!)，与bash或zsh本身无关)。
!# means the entire command line typed so far, and :3 selects the third word, in this case ~/bin/ack.
!#表示到目前为止输入的整个命令行，并且:3选择第三个单词，在本例中为~/bin/ack。
So the command is equivalent to:
因此命令等价于:
curl http://beyondgrep.com/ack-2.02-single-file > ~/bin/ack && chmod 0755 ~/bin/ack