Bash 删除第二列开头的空白
我有一个空格分隔的文件,看起来像:Bash 删除第二列开头的空白,bash,awk,sed,cut,Bash,Awk,Sed,Cut,我有一个空格分隔的文件,看起来像: 12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899 2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721 6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305 10 10.104585135.104956335 ENSG00000065
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
我想删除第二列的前导空格(第1列和第2列之间有两个空格,而不是一个空格)。有人知道用于此的sed或awk命令吗?带cut:
cut -d " " -f 1,3- file
输出:
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG0000065361 rs2271194 rs61939899
2.198148577.198835577 ENSG0000065413 rs4524134 rs2697288 rs6738721
6.84279922.84407274 ENSG0000065609 rs2016358 rs35791305
10.104585135.104956335 ENSG0000065613 rs72811696
带切口:
cut -d " " -f 1,3- file
输出:
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG0000065361 rs2271194 rs61939899
2.198148577.198835577 ENSG0000065413 rs4524134 rs2697288 rs6738721
6.84279922.84407274 ENSG0000065609 rs2016358 rs35791305
10.104585135.104956335 ENSG0000065613 rs72811696
tr-s
(或tr-挤压重复
)将删除重复字符。因此,如果要替换所有重复的空格,可以编写:
tr -s ' ' < input-file > output-file
输出:
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
tr-s
(或tr-挤压重复
)将删除重复字符。因此,如果要替换所有重复的空格,可以编写:
tr -s ' ' < input-file > output-file
输出:
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
使用
GNU sed
,在第一列后用单空格替换多个空格字符
sed -E 's/^(\S+)\s+/\1 /' ip.txt
对于其他版本,请使用
用于[[:space:]
\s
的[^[:space:]
\S
或
:空白:
(空格和制表符)而不是:空格:
(空白字符)使用GNU-sed
,在第一列后用单个空格替换多个空白字符
sed -E 's/^(\S+)\s+/\1 /' ip.txt
对于其他版本,请使用
用于[[:space:]
\s
的[^[:space:]
\S
或
:空白:
(空格和制表符)而不是:空格:
(空白字符)此AWK将所有连续空格的出现替换为单个空格:
$ awk 'gsub(/ +/," ")' file
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
此AWK使用单个空间替换连续空间的所有发生:
$ awk 'gsub(/ +/," ")' file
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
只需删除每行的第一个空格:
$ sed 's/ //' file
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696
只需删除每行的第一个空格:
$ sed 's/ //' file
12 12.57428314.57490104 ENSG00000065361 rs2271194 rs61939899
2 2.198148577.198835577 ENSG00000065413 rs4524134 rs2697288 rs6738721
6 6.84279922.84407274 ENSG00000065609 rs2016358 rs35791305
10 10.104585135.104956335 ENSG00000065613 rs72811696