天涯海角异孤星
Debian 系统默认的 apt 源比较慢,修改为国内的镜像地址,可以加速下载。
可在文件 /etc/debian_version 记录着 Debian 的版本号:
$ cat /etc/debian_version
11.2
可知版本号是 11.2,然后去阿里云的 Debian 镜像站(https://developer.aliyun.com/mirror/debian)找到对应版本的镜像地址。
debian 11.x 的镜像地址是...
系统版本:Ubuntu 20.04.2 LTS 64位
1、安装 s-nail
包:
sudo apt install s-nail
2、编辑 /etc/s-nail.rc
配置文件,在末尾添加:
set from="账号@qq.com"
set smtp="smtps://smtp.qq.com:465"
set smtp-auth-user="账号@qq.com"
set smtp-auth-password="授权码"
set smtp-auth=login
3、发件时,要使用 s-nail
指令,例如:
echo "这是邮件body" | s-nail -s "这是邮件标题" xxxxx@qq.com
默认cp命令拷贝只是文件的内容,文件的修改时间是不同的
[root@localhost test]# ll
总用量 4
-rwxr--r-- 1 root root 277 2月 14 16:00 hello.pl
[root@localhost test]# cp hello.pl hello.pl1
[root@localhost test]# ll
总用量 8
-rwxr--r-- 1 root root 277 2月 14 16:00 hello.pl
-rwxr--r-- 1 root root 277 2月 14 16:01 hello.pl1
如果想复制拷贝访问权限和修改时间,可以使用-p参数实现。
[root@localhost test]# cp -p hello.pl hello.pl2
[root@localhost test]# ll
总用量 12
-rwxr--r-- 1 root root 277 2月 14 16:00 hello.pl
-rwxr--r-- 1 root root 277 2月 14 16:01 hello.pl1
-rwxr--r-- 1 root root 277 2月 14 16:00 hello.pl2
zip 指令参数说明:
[root@VM_0_10_centos ~]# zip
Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software license.
Zip 3.0 (July 5th 2008). Usage:
zip [-options] [-b path] [-t mmddyyyy] [-n suffixes] [zipfile list] [-xi list]
The default action is to add or replace zipfile entries from list, which
can include the special name - to compress standard input.
If zipfile and list are omitted, zip compresses stdin to stdout.
-f freshen: only changed files -u update: only changed or new files
-d delete entries in zipfile -m move into zipfile (delete OS files)
-r recurse into directories -j junk (don't record) directory names
-0 store only -l convert LF to CR LF (-ll CR LF to LF)
-1 compress faster -9 compress better
-q quiet operation -v verbose operation/print version info
-c add one-line comments -z add zipfile comment
-@ read names from stdin -o make zipfile as old as latest entry
-x exclude the following names -i include only the following names
-F fix zipfile (-FF try harder) -D do not add directory entries
-A adjust self-extracting exe -J junk zipfile prefix (unzipsfx)
-T test zipfile integrity -X eXclude eXtra file attributes
-y store symbolic links as the link instead of the referenced file
-e encrypt -n don't compress these suffixes
-h2 show more help
打包某个目录下的所有文件和子目录时,可以用 -r 递归参数,要排除某个目录或文件可以用 -x 参数。但是要注意,-x 参数如果是排除目录,要用双引号包裹,末尾要加 * 号。
打包时排除某个文件:
zip -r yangdx.zip yangdx/ -x yangdx/test.txt
打包时排除 cache、vendor 目录:
zip -r yangdx.zip yangdx/ -x "yangdx/cache/*" -x "yangdx/vendor/*"