Ubuntu中文论坛

对一个文本的每行开头增加一个行号

:%s/^/\=line(".")/

% 代表所有行
s 代表替换
^ 行头
请问 这个 \= 里面的 \ 符号，是表达转义的含义吗？

line函数里面的 (".") "." 是什么含义？看了帮助手册也没有懂。
line({expr}) The result is a Number, which is the line number of the file
position given with {expr}. The accepted positions are:
. the cursor position
$ the last line in the current buffer
'x position of mark x (if the mark is not set, 0 is
returned)
w0 first line visible in current window
w$ last line visible in current window
v In Visual mode: the start of the Visual area (the
cursor is the end). When not in Visual mode
returns the cursor position. Differs from |'<| in
that it's updated right away.
Note that a mark in another file can be used. The line number

说得很清楚了，代表当前行啊。

nl file_input > file_output

??

擦，居然还有nl

又多了个爱学习的童靴

nl也是命令？powershell里没有

nl貌似不行的..

xhm@xhmdeb:~$ cat usecontext
/home/xhm/context/tex/setuptex

export OSFONTDIR=/home/xhm/font/context

mtxrun --script fonts --reload

xhm@xhmdeb:~$

xhm@xhmdeb:~$ nl usecontext > nlout
xhm@xhmdeb:~$ cat nlout
1 /home/xhm/context/tex/setuptex

2 export OSFONTDIR=/home/xhm/font/context

3 mtxrun --script fonts --reload

xhm@xhmdeb:~$

. the cursor position,光标的位置，那么" " ,这里的引号是什么意思呢？

oneleaf 写了：

代码： 全选

nl -ba usecontext

thx,
忘记man了...