当我使用grep查找我需要的文本时,它将显示包含与给定模式匹配的行。
例如,
# grep -r ".*Linux" *
path0/output.txt:I hope you enjoyed working on Linux.
path1/output1.txt:Welcome to Linux.
path2/output2.txt:I hope you will have fun with Linux.
然后,我想编辑文件path2/output2.txt,因此,我输入了vim path2/output2.txt。
但是,我不认为这是一个有效的方法。
如何在grep之后复制
以下是文件的内容:
xxx_component1-1.0-2-2acd314.xc-linux-x86-64-Release-devel.r
xxx_component2-3.0-1-fg3sdhd.xc-linux-x86-64-Release-devel.r
xxx_component3-1.0-2-3gsjcgd.xc-linux-x86-64-Release-devel.r
xxx_component4-0.0-2-2acd314.xc-linux-x86-64-Release-devel.r
我想提取组件名称component1、component2等。
这就是我试过的:
for l
在sudo apt upgrade期间,我得到以下错误。也在sudo apt autoremove --purge上。
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk sp
我有一个文本文件,格式如下:
Wind River Linux glibc_cgl (cgl) 3.0.3
Build label: NDPGSN_5_0_SRC_GSN_LINUX_GPBOS_2
Build host: eselnvlx1114
Build date: Mon Mar 18 23:24:08 CET 2013
Installed: Fri Jun 20 02:22:08 EEST 2014
Last login: Fri Aug 8 11:37:08 2014 from 172
gsh lis
sudo apt-get install linux-headers-$(uname -r)
返回:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package linux-headers-4.10.0-42-generic is not available, but is referred to by another package.
This may mean that the package is missing, has been obs
回声“大家好!”
我需要检查linux脚本的输入参数是否符合我的安全需求。它应该只包含a-z字符,0-9位数,一些空格和"+“符号。例句:“r51+r11做3分钟”
这对我没用:
if grep -v '[0123456789abcdefghijklmnopqrstuvwxyz+ ]' /tmp/input; then
echo "THIS DOES NOT COMPLY!";
fi
有什么线索吗?
我正试图在linux上更新我的R版本,但是坏掉的依赖正在阻止我这样做。在尝试了所有诸如从Cran添加repos、sudo after更新等操作之后,我仍然无法安装R的最新版本。
我的问题是如何从我的机器上完全删除R,这样我就可以重新启动。我试过:
sudo apt-get remove r-base
然而,当我运行R时,它仍然有效:
laptop$ R
R version 2.13.1 (2011-07-08)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: