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去掉第一列的序列号

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去掉第一列的序列号

这里我想删除每行第一个大写字母上的序列号。我该如何在这个文件中执行此操作？

     1  #
     2  # Automatically generated file; DO NOT EDIT.
     3  # OpenWrt Configuration
     4  #
     5  CONFIG_MODULES=y
     6  CONFIG_HAVE_DOT_CONFIG=y
     7  CONFIG_TARGET_sunxi=y
     8  # CONFIG_TARGET_sunxi_BPI-M1-Plus is not set
     9  CONFIG_TARGET_sunxi_BPI-M1=y
    10  # CONFIG_TARGET_sunxi_BPI-R1 is not set
    11  CONFIG_TARGET_BOARD="sunxi"
    12  CONFIG_TARGET_ARCH_PACKAGES="sunxi"
    13  CONFIG_DEFAULT_TARGET_OPTIMIZATION="-Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16"
    14  CONFIG_CPU_TYPE="cortex-a8+vfpv3"
    15  CONFIG_LINUX_3_18=y
    16  CONFIG_DEFAULT_base-files=y
    17  CONFIG_DEFAULT_busybox=y
    18  CONFIG_DEFAULT_dnsmasq=y
    19  CONFIG_DEFAULT_dropbear=y
    20  CONFIG_DEFAULT_firewall=y
    21  CONFIG_DEFAULT_fstools=y
    22  CONFIG_DEFAULT_ip6tables=y
^^^^  ^^

抱歉，我应该在编号序列前面加上空格并标记它们。每行都有空格。实际上，我必须处理超过 4000 行。这里我只发布 1-22。命令 sed 应该有效。我忘了明确解释。正则表达式对我来说很新而且很复杂。希望你能给我一个建议。

答案1

不知道您是否之后C或line numbers我提供以下解决方案：

  1. 要摆脱line numbers使用：

    sed 's/^ *.[0-9]  //g' line.txt

# Result

#
# Automatically generated file; DO NOT EDIT.
# OpenWrt Configuration
#
CONFIG_MODULES=y
CONFIG_HAVE_DOT_CONFIG=y
CONFIG_TARGET_sunxi=y
# CONFIG_TARGET_sunxi_BPI-M1-Plus is not set
CONFIG_TARGET_sunxi_BPI-M1=y
# CONFIG_TARGET_sunxi_BPI-R1 is not set
CONFIG_TARGET_BOARD="sunxi"
CONFIG_TARGET_ARCH_PACKAGES="sunxi"
CONFIG_DEFAULT_TARGET_OPTIMIZATION="-Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16"
CONFIG_CPU_TYPE="cortex-a8+vfpv3"
CONFIG_LINUX_3_18=y
CONFIG_DEFAULT_base-files=y
CONFIG_DEFAULT_busybox=y
CONFIG_DEFAULT_dnsmasq=y
CONFIG_DEFAULT_dropbear=y
CONFIG_DEFAULT_firewall=y
CONFIG_DEFAULT_fstools=y
CONFIG_DEFAULT_ip6tables=y

  2. 要摆脱C使用：

    sed '5,22s/ [C]//g' line.txt


# Results

1  #
2  # Automatically generated file; DO NOT EDIT.
3  # OpenWrt Configuration
4  #
5 ONFIG_MODULES=y
6 ONFIG_HAVE_DOT_CONFIG=y
7 ONFIG_TARGET_sunxi=y
8  #ONFIG_TARGET_sunxi_BPI-M1-Plus is not set
9 ONFIG_TARGET_sunxi_BPI-M1=y
10  #ONFIG_TARGET_sunxi_BPI-R1 is not set
11 ONFIG_TARGET_BOARD="sunxi"
12 ONFIG_TARGET_ARCH_PACKAGES="sunxi"
13 ONFIG_DEFAULT_TARGET_OPTIMIZATION="-Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16"
14 ONFIG_CPU_TYPE="cortex-a8+vfpv3"
15 ONFIG_LINUX_3_18=y
16 ONFIG_DEFAULT_base-files=y
17 ONFIG_DEFAULT_busybox=y
18 ONFIG_DEFAULT_dnsmasq=y
19 ONFIG_DEFAULT_dropbear=y
20 ONFIG_DEFAULT_firewall=y
21 ONFIG_DEFAULT_fstools=y
22 ONFIG_DEFAULT_ip6tables=y

  3. 写入原始文件并创建备份使用命令--in-place中的选项：sed

    sed --in-place=.bak '5,22s/ [C]//g' line.txt

sed --in-place=.bak 's/^ *.[0-9]  //g' line.txt

  4. 要写入新文件：

    sed 's/^ *.[0-9]  //g' line.txt >> new_file.txt

sed '5,22s/ [C]//g' line.txt  >> new_file.txt

  5. 保留每行前的空格：

    sed 's/^ *.[0-9]  /     /g' line.txt

答案2

awk '{print $2, $3, $4, $5, $6, $7, $8}' ur4000rowfile.txt

会给：

#      
# Automatically generated file; DO NOT EDIT.
# OpenWrt Configuration    
#      
CONFIG_MODULES=y      
CONFIG_HAVE_DOT_CONFIG=y      
CONFIG_TARGET_sunxi=y      
# CONFIG_TARGET_sunxi_BPI-M1-Plus is not set  
CONFIG_TARGET_sunxi_BPI-M1=y      
# CONFIG_TARGET_sunxi_BPI-R1 is not set  
CONFIG_TARGET_BOARD="sunxi"      
CONFIG_TARGET_ARCH_PACKAGES="sunxi"      
CONFIG_DEFAULT_TARGET_OPTIMIZATION="-Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16"  
CONFIG_CPU_TYPE="cortex-a8+vfpv3"      
CONFIG_LINUX_3_18=y      
CONFIG_DEFAULT_base-files=y      
CONFIG_DEFAULT_busybox=y      
CONFIG_DEFAULT_dnsmasq=y      
CONFIG_DEFAULT_dropbear=y      
CONFIG_DEFAULT_firewall=y      
CONFIG_DEFAULT_fstools=y      
CONFIG_DEFAULT_ip6tables=y

或者如果你这样做：

awk '{$1=""; print $0}' ur4000rowfile.txt

你将获得如下输出：

 #
 # Automatically generated file; DO NOT EDIT.
 # OpenWrt Configuration
 #
 CONFIG_MODULES=y
 CONFIG_HAVE_DOT_CONFIG=y
 CONFIG_TARGET_sunxi=y
 # CONFIG_TARGET_sunxi_BPI-M1-Plus is not set
 CONFIG_TARGET_sunxi_BPI-M1=y
 # CONFIG_TARGET_sunxi_BPI-R1 is not set
 CONFIG_TARGET_BOARD="sunxi"
 CONFIG_TARGET_ARCH_PACKAGES="sunxi"
 CONFIG_DEFAULT_TARGET_OPTIMIZATION="-Os -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16"
 CONFIG_CPU_TYPE="cortex-a8+vfpv3"
 CONFIG_LINUX_3_18=y
 CONFIG_DEFAULT_base-files=y
 CONFIG_DEFAULT_busybox=y
 CONFIG_DEFAULT_dnsmasq=y
 CONFIG_DEFAULT_dropbear=y
 CONFIG_DEFAULT_firewall=y
 CONFIG_DEFAULT_fstools=y
 CONFIG_DEFAULT_ip6tables=y

最后，如果您不想使用输出来创建新文件，只需将输出重定向到新文件，如下所示：

awk '{print $2, $3, $4, $5, $6, $7, $8}' ur400rowfile.txt > urnewcleanfile.txt

或这个：

awk '{$1=""; print $0}' ur400rowfile.txt > urnewcleanfile.txt

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