1、编写脚本 createuser.sh,实现如下功能:使用一个用户名做为参数,如果 指定参数的用户存在,就显示其存在,否则添加之;显示添加的用户的id号等信息
[root@localhost ~]# bash createuser.sh
daichanshu
[root@localhost ~]# bash createuser.sh wang
user wang add ok user wang information:uid=1000(wang) gid=1000(wang) groups=1000(wang)
[root@localhost ~]# cat createuser.sh
#!/bin/bash
if [ $1 ]; then
id $1 &> /dev/null && echo "user $1 exist" || echo "`useradd $1`user $1 add ok user $1 information:$(id $1) "
else
echo "daichanshu"
fi
2、编写生成脚本基本格式的脚本,包括作者,联系方式,版本,时间,描述等
[root@localhost ~]# cat .vimrc
set ts=4
set expandtab
set ignorecase
set cursorline
set autoindent
autocmd BufNewFile *.sh exec ":call SetTitle()"
func SetTitle()
if expand("%:e") == ‘sh‘
call setline(1,"#!/bin/bash")
call setline(2,"#")
call setline(3,"#********************************************************************")
call setline(4,"#Author: none")
call setline(5,"#QQ: none")
call setline(6,"#Date: ".strftime("%Y-%m-%d"))
call setline(7,"#FileName: ".expand("%"))
call setline(8,"#URL: none")
call setline(9,"#Description: The test script")
call setline(10,"#Copyright (C): ".strftime("%Y")." All rights reserved")
call setline(11,"#********************************************************************")
call setline(12,"")
endif
endfunc
autocmd BufNewFile * normal G
[root@localhost ~]#
3、查找/etc目录下大于1M且类型为普通文件的所有文件
[root@localhost ~]# find /etc/ -size +1M | xargs ls -lh
-rw-r--r--. 1 root root 8.1M Nov 13 2019 /etc/selinux/targeted/policy/policy.31
-r--r--r--. 1 root root 8.8M Feb 21 19:02 /etc/udev/hwdb.bin
4、打包/etc/目录下面所有conf结尾的文件,压缩包名称为当天的时间,并拷贝到/usr/local/src目录备份。
[root@localhost ~]#
[root@localhost ~]# tar -zcvf /usr/local/src/etc_conf_bak`date +%F:%H:%M`.tar.gz $(find /etc/ -name "*.conf" | tr "\n" " ")
5、查找当前系统上没有属主或属组,且最近一个周内曾被访问过的文件或目录
[root@localhost ~]# find / \( -nouser -o -nogroup \) -a -atime +6
find: ‘/proc/3293/task/3293/fd/9’: No such file or directory
find: ‘/proc/3293/task/3293/fdinfo/9’: No such file or directory
find: ‘/proc/3293/fd/5’: No such file or directory
find: ‘/proc/3293/fdinfo/5’: No such file or directory
6、查找/etc目录下至少有一类用户没有执行权限的文件
[root@localhost ~]# find /etc/ -not -perm /111
原文:https://www.cnblogs.com/catastrophe/p/14527214.html