打印第10至第10行
awk 'NR==10,NR==10{print $k}' file.txt
$ nl --body-numbering=a models.py | head -n 878 | tail -n 8
871
872 def partial_clone(self):
873 self.id = None
874 self.deleted = False
875 self.status = TaskProfitRuleStatus.New
876 self.save()
877 return self
878
Administrator@PC-20160727BOAG MINGW64 /d/src/api (uat-tmp)
$ nl --help
Usage: nl [OPTION]... [FILE]...
Write each FILE to standard output, with line numbers added.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-b, --body-numbering=STYLE use STYLE for numbering body lines
-d, --section-delimiter=CC use CC for logical page delimiters
-f, --footer-numbering=STYLE use STYLE for numbering footer lines
-h, --header-numbering=STYLE use STYLE for numbering header lines
-i, --line-increment=NUMBER line number increment at each line
-l, --join-blank-lines=NUMBER group of NUMBER empty lines counted as one
-n, --number-format=FORMAT insert line numbers according to FORMAT
-p, --no-renumber do not reset line numbers for each section
-s, --number-separator=STRING add STRING after (possible) line number
-v, --starting-line-number=NUMBER first line number for each section
-w, --number-width=NUMBER use NUMBER columns for line numbers
--help display this help and exit
--version output version information and exit
By default, selects -v1 -i1 -l1 -sTAB -w6 -nrn -hn -bt -fn.
CC are two delimiter characters used to construct logical page delimiters,
a missing second character implies :. Type \ for . STYLE is one of:
a number all lines
t number only nonempty lines
n number no lines
pBRE number only lines that contain a match for the basic regular
expression, BRE
FORMAT is one of:
ln left justified, no leading zeros
rn right justified, no leading zeros
rz right justified, leading zeros