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锚文本外链查询网站,公司网站开发费计入办公费,建模外包网站,拓者吧室内设计官网关于Vim编辑器，以下说法正确的有？ABCD A、使用Vim编辑器时，默认处于命令模式。在该模式下可以移动光标位置，可以通过快捷键对文件内容进行复制、粘贴、删除等操作。 B、打开文件方式：vim 文件名。 C、在命令模式下&am…

关于Vim编辑器，以下说法正确的有？ABCD

A、使用Vim编辑器时，默认处于命令模式。在该模式下可以移动光标位置，可以通过快捷键对文件内容进行复制、粘贴、删除等操作。
B、打开文件方式：vim 文件名。
C、在命令模式下，按键：Ctrl + v，进入列（也叫区块）模式。
D、在末行模式下，输入“:wq”，表示保存并且退出。
在这里插入图片描述

运维人员需要给销售部门的所有人员创建一个公共目录pub，但是每个人只能管理自己的文件，不能删除别人的文件，权限如何设置（AC）？

A、chmod 1777 /pub
B、chown rwxrwxrwt /pub
C、chmod a+rwx,o+t /pub
D、以上都不对
在这里插入图片描述
在这里插入图片描述

配置静态网络报错

[root@335 network-scripts]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@335 network-scripts]# systemctl status network.service
● network.service - LSB: Bring up/down networkingLoaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)Active: failed (Result: exit-code) since 一 2025-06-16 21:39:21 CST; 39s agoDocs: man:systemd-sysv-generator(8)Process: 93516 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)Process: 93688 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)6月 16 21:39:20 335 systemd[1]: Starting LSB: Bring up/down networking...
6月 16 21:39:20 335 network[93688]: 正在打开环回接口： [  确定  ]
6月 16 21:39:21 335 network[93688]: 正在打开接口 ens33： 错误：连接激活失败：No suitable device found for this connection (device virbr0 not available because prof…erface name)).
6月 16 21:39:21 335 network[93688]: [失败]
6月 16 21:39:21 335 systemd[1]: network.service: control process exited, code=exited status=1
6月 16 21:39:21 335 systemd[1]: Failed to start LSB: Bring up/down networking.
6月 16 21:39:21 335 systemd[1]: Unit network.service entered failed state.
6月 16 21:39:21 335 systemd[1]: network.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

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[root@335 network-scripts]# vim ifcfg-ens33
[root@335 network-scripts]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@335 network-scripts]# cat ifcfg-ens33
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.235.100
GATEWAY=192.168.235.254
NETMASK=255.255.255.0
DNS1=8.8.8.8
[root@335 network-scripts]# systemctl status NetworkManager
● NetworkManager.service - Network ManagerLoaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)Active: active (running) since 五 2025-05-02 09:12:18 CST; 1 months 15 days agoDocs: man:NetworkManager(8)Main PID: 18072 (NetworkManager)Tasks: 3CGroup: /system.slice/NetworkManager.service└─18072 /usr/sbin/NetworkManager --no-daemon6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.1337] device (ens33): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-...'external')
6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.1422] device (ens33): state change: disconnected -> unmanaged (reason 'sleeping', sys-iface-state: 'external')
6月 16 21:39:20 335 NetworkManager[18072]: <warn>  [1750081160.7430] ifcfg-rh:     missing PREFIX, assuming 192.168.235.100/24
6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.8044] device (lo): carrier: link connected
6月 16 21:39:20 335 NetworkManager[18072]: <warn>  [1750081160.9338] ifcfg-rh:     missing PREFIX, assuming 192.168.235.100/24
6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.9997] agent-manager: req[0x559af3b94160, :1.2542/nmcli-connect/0]: agent registered
6月 16 21:39:21 335 NetworkManager[18072]: <info>  [1750081161.0015] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
6月 16 21:48:02 335 NetworkManager[18072]: <info>  [1750081682.6272] agent-manager: req[0x559af3ae0b30, :1.65/org.gnome.Shell.NetworkAgent/1000]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.6961] agent-manager: req[0x559af3b80b30, :1.2557/nmcli-connect/0]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.7007] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
Hint: Some lines were ellipsized, use -l to show in full.
[root@335 network-scripts]# systemctl stop NetworkManager
[root@335 network-scripts]# systemctl status NetworkManager
● NetworkManager.service - Network ManagerLoaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)Active: inactive (dead) since 一 2025-06-16 21:51:06 CST; 17s agoDocs: man:NetworkManager(8)Process: 18072 ExecStart=/usr/sbin/NetworkManager --no-daemon (code=exited, status=0/SUCCESS)Main PID: 18072 (code=exited, status=0/SUCCESS)6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.9997] agent-manager: req[0x559af3b94160, :1.2542/nmcli-connect/0]: agent registered
6月 16 21:39:21 335 NetworkManager[18072]: <info>  [1750081161.0015] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
6月 16 21:48:02 335 NetworkManager[18072]: <info>  [1750081682.6272] agent-manager: req[0x559af3ae0b30, :1.65/org.gnome.Shell.NetworkAgent/1000]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.6961] agent-manager: req[0x559af3b80b30, :1.2557/nmcli-connect/0]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.7007] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
6月 16 21:51:05 335 systemd[1]: Stopping Network Manager...
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.8790] caught SIGTERM, shutting down normally.
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.8865] device (virbr0-nic): released from master device virbr0
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.9189] exiting (success)
6月 16 21:51:06 335 systemd[1]: Stopped Network Manager.
Hint: Some lines were ellipsized, use -l to show in full.
[root@335 network-scripts]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.
[root@335 network-scripts]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@335 network-scripts]# systemctl stop libvirtd
[root@335 network-scripts]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@335 network-scripts]# systemctl status NetworkManager
● NetworkManager.service - Network ManagerLoaded: loaded (/usr/lib/systemd/system/NetworkManager.service; disabled; vendor preset: enabled)Active: inactive (dead) since 一 2025-06-16 21:51:06 CST; 3min 23s agoDocs: man:NetworkManager(8)Main PID: 18072 (code=exited, status=0/SUCCESS)6月 16 21:39:20 335 NetworkManager[18072]: <info>  [1750081160.9997] agent-manager: req[0x559af3b94160, :1.2542/nmcli-connect/0]: agent registered
6月 16 21:39:21 335 NetworkManager[18072]: <info>  [1750081161.0015] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
6月 16 21:48:02 335 NetworkManager[18072]: <info>  [1750081682.6272] agent-manager: req[0x559af3ae0b30, :1.65/org.gnome.Shell.NetworkAgent/1000]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.6961] agent-manager: req[0x559af3b80b30, :1.2557/nmcli-connect/0]: agent registered
6月 16 21:48:46 335 NetworkManager[18072]: <info>  [1750081726.7007] audit: op="connection-activate" uuid="c96bc909-188e-ec64-3a96-6a90982b08ad" name="System ens33"...ce name))."
6月 16 21:51:05 335 systemd[1]: Stopping Network Manager...
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.8790] caught SIGTERM, shutting down normally.
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.8865] device (virbr0-nic): released from master device virbr0
6月 16 21:51:05 335 NetworkManager[18072]: <info>  [1750081865.9189] exiting (success)
6月 16 21:51:06 335 systemd[1]: Stopped Network Manager.
Hint: Some lines were ellipsized, use -l to show in full.
[root@335 network-scripts]# systemctl disable libvirtd
Removed symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket.
[root@335 network-scripts]# systemctl status network
● network.service - LSB: Bring up/down networkingLoaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)Active: failed (Result: exit-code) since 一 2025-06-16 21:53:55 CST; 2min 25s agoDocs: man:systemd-sysv-generator(8)6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 network[95302]: RTNETLINK answers: File exists
6月 16 21:53:55 335 systemd[1]: network.service: control process exited, code=exited status=1
6月 16 21:53:55 335 systemd[1]: Failed to start LSB: Bring up/down networking.
6月 16 21:53:55 335 systemd[1]: Unit network.service entered failed state.
6月 16 21:53:55 335 systemd[1]: network.service failed.
[root@335 network-scripts]#

在这里插入图片描述
在这里插入图片描述
在这里插入图片描述

为什么 怎么理解192.168.235.138这个ip

[root@335 network-scripts]# cat ifcfg-ens33
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.235.101
GATEWAY=192.168.235.254
NETMASK=255.255.255.0
DNS1=8.8.8.8
[root@335 network-scripts]# systemctl restart network
[root@335 network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:1f:a9:0a brd ff:ff:ff:ff:ff:ffinet 192.168.235.138/24 brd 192.168.235.255 scope global dynamic ens33valid_lft 1746sec preferred_lft 1746secinet 192.168.235.101/24 brd 192.168.235.255 scope global secondary ens33valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:98:27:a3 brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:98:27:a3 brd ff:ff:ff:ff:ff:ff
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether 02:42:bf:7e:42:43 brd ff:ff:ff:ff:ff:ffinet 172.17.0.1/16 scope global docker0valid_lft forever preferred_lft forever

在这里插入图片描述
在这里插入图片描述
在这里插入图片描述

[root@335 network-scripts]# dhclient -r ens33
[root@335 network-scripts]# ip addr flush  dev ens33
[root@335 network-scripts]# systemctl restart network
[root@335 network-scripts]# systemctl status network
● network.service - LSB: Bring up/down networkingLoaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)Active: active (exited) since 一 2025-06-16 22:14:26 CST; 10s agoDocs: man:systemd-sysv-generator(8)Process: 97051 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)Process: 97225 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)6月 16 22:14:21 335 systemd[1]: Starting LSB: Bring up/down networking...
6月 16 22:14:21 335 network[97225]: 正在打开环回接口： [  确定  ]
6月 16 22:14:26 335 network[97225]: 正在打开接口 ens33： [  确定  ]
6月 16 22:14:26 335 systemd[1]: Started LSB: Bring up/down networking.
[root@335 network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:1f:a9:0a brd ff:ff:ff:ff:ff:ffinet 192.168.235.101/24 brd 192.168.235.255 scope global ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe1f:a90a/64 scope link valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:98:27:a3 brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:98:27:a3 brd ff:ff:ff:ff:ff:ff
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether 02:42:bf:7e:42:43 brd ff:ff:ff:ff:ff:ffinet 172.17.0.1/16 scope global docker0valid_lft forever preferred_lft forever
[root@335 network-scripts]#

好了

24． 下列关于查看文件内容的命令，说法错误的是？ABC

A、more多用于显示小文件内容，默认加载文件的一半内容
B、less多用于显示小文件内容，不是加载整个文件，而是一点一点进行加载
C、head 显示一个文件的前n行，如果不指定n，默认显示前5行
D、#tail –f 用于查看一个文件动态变化内容

为什么执行了 echo 123>> 2217.txt 2217.txt的文件中为乱码

在这里插入图片描述
在这里插入图片描述

[root@335 /]# vim 2217.txt
[root@335 /]# file -i 2217.txt
2217.txt: application/x-iso9660-image; charset=binary
[root@335 /]#

怎么退出less命令

在这里插入图片描述

[root@335 /]# vim 2224.txt
[root@335 /]# more 2224.txt
1
1
1
1
1
1
1
1
1
23231
321
3
12
321
3
123
21
312
3
213
21
3213
21
3
213
2
3
12
321
3
1
[root@335 /]# less 2224.txt
[root@335 /]# head 2224.txt
1
1
1
1
1
1
1
1
1
23
[root@335 /]#

在这里插入图片描述

源码

丢失
192.168.235.101

�����4Q����<�
���>C��l`[root@335 /]# ls
1.txt     844     bin   chuangzao23   dev  home   lib    media  opt   root  sbin  srv  temp  usr
2217.txt  88.txt  boot  chuangzao848  etc  j.txt  lib64  mnt    proc  run   soft  sys  tmp   var
[root@335 /]# vim 2217.txt
[root@335 /]# file -i 2217.txt
2217.txt: application/x-iso9660-image; charset=binary
[root@335 /]# vim 2224.txt
[root@335 /]# more 2224.txt
1
1
1
1
1
1
1
1
1
23231
321
3
12
321
3
123
21
312
3
213
21
3213
21
3
213
2
3
12
321
3
1
[root@335 /]# less 2224.txt
[root@335 /]# head 2224.txt
1
1
1
1
1
1
1
1
1
23
[root@335 /]#
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