Sed 将数字四舍五入并分成两列
现在看来:Sed 将数字四舍五入并分成两列,sed,grep,numbers,rounding,Sed,Grep,Numbers,Rounding,现在看来: xmin = 0 xmax = 15.393970521541949 xmin = 15.393970521541949 xmax = 27.58997052154195 xmin = 27.58997052154195 xmax = 46.05797052154195 xmin = 46.05797052154195 xmax = 65.67797052154194 xmin = 65.67797052154194 xmax = 81.08048969617173 xmin = 8
xmin = 0
xmax = 15.393970521541949
xmin = 15.393970521541949
xmax = 27.58997052154195
xmin = 27.58997052154195
xmax = 46.05797052154195
xmin = 46.05797052154195
xmax = 65.67797052154194
xmin = 65.67797052154194
xmax = 81.08048969617173
xmin = 81.08048969617173
xmax = 82.7959410430839
它应该是这样的:
0 15.39
15.39 27.59
27.59 46.06
46.06 65.68
.
.
.
嗨,我有一个.txt文件,从中我只过滤了这个xmin,xmax数字,命令是:
sed -n '16,$p' info.txt | grep "xmin\|xmax"
我知道如何只显示数字,但我不知道如何将这些数字四舍五入并将它们分成两列。结果应如示例所示。awk可以轻松做到:
awk '{printf "%.2f%s",$3,!(NR%2)?"\n":FS}' file
以你的例子:
kent$ cat f
xmin = 0
xmax = 15.393970521541949
xmin = 15.393970521541949
xmax = 27.58997052154195
xmin = 27.58997052154195
xmax = 46.05797052154195
xmin = 46.05797052154195
xmax = 65.67797052154194
xmin = 65.67797052154194
xmax = 81.08048969617173
xmin = 81.08048969617173
xmax = 82.7959410430839
kent$ awk '{printf "%.2f%s",$3,!(NR%2)?"\n":FS}' f
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
awk可以轻松做到这一点:
awk '{printf "%.2f%s",$3,!(NR%2)?"\n":FS}' file
以你的例子:
kent$ cat f
xmin = 0
xmax = 15.393970521541949
xmin = 15.393970521541949
xmax = 27.58997052154195
xmin = 27.58997052154195
xmax = 46.05797052154195
xmin = 46.05797052154195
xmax = 65.67797052154194
xmin = 65.67797052154194
xmax = 81.08048969617173
xmin = 81.08048969617173
xmax = 82.7959410430839
kent$ awk '{printf "%.2f%s",$3,!(NR%2)?"\n":FS}' f
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
使用格式说明符(%.2f
)打印每行中的最后一个字段($NF
)。每隔一行后打印换行符
my $mi,$ma;
while (<>) {
if (/xmin = ([0-9.]*)/) { $mi=sprintf("%.2f", $1); next; };
if (/xmax = ([0-9.]*)/) { $ma=sprintf("%.2f", $1); printf "$mi $ma\n" };
}
使用格式说明符(%.2f
)打印每行中的最后一个字段($NF
)。每秒后打印换行符
。我的$mi,$ma;
my $mi,$ma;
while (<>) {
if (/xmin = ([0-9.]*)/) { $mi=sprintf("%.2f", $1); next; };
if (/xmax = ([0-9.]*)/) { $ma=sprintf("%.2f", $1); printf "$mi $ma\n" };
}
而(){
如果(/xmin=([0-9.]*)/){$mi=sprintf(“%.2f”,$1);下一步;};
如果(/xmax=([0-9.]*)/){$ma=sprintf(“%.2f”,$1);printf“$mi$ma\n”};
}
使用以下命令运行此perl脚本:
script.pl < data
script.pl
会导致
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
my$mi$ma;
而(){
如果(/xmin=([0-9.]*)/){$mi=sprintf(“%.2f”,$1);下一步;};
如果(/xmax=([0-9.]*)/){$ma=sprintf(“%.2f”,$1);printf“$mi$ma\n”};
}
使用以下命令运行此perl脚本:
script.pl < data
script.pl
会导致
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
0.00 15.39
15.39 27.59
27.59 46.06
46.06 65.68
65.68 81.08
81.08 82.80
- 读两行
- 删除
xman/xmin=
- trunc数字
- 将新行更改为空格
- 循环
(POSIX版本so——用于GNU sed的POSIX
)
- 读两行
- 删除
xman/xmin=
- trunc数字
- 将新行更改为空格
- 循环
(POSIX版本so——用于GNU sed的POSIX
)