我不确定为什么，但由于某种原因，-gui在 Linux 上安装 TeXLive 2021 时该选项无效并出现错误。因此：
clive@clivux:~/Downloads/install-tl-20210925$ sudo ./install-tl -gui=wizard -select-repository
[sudo] password for clive:
Can't exec "wish": No such file or directory at ./install-tl line 134.
Can't exec "wish8.7": No such file or directory at ./install-tl line 134.
Can't exec "wish8.6": No such file or directory at ./install-tl line 134.
Can't exec "wish8.5": No such file or directory at ./install-tl line 134.
Can't exec "tclkit": No such file or directory at ./install-tl line 134.
UI plugin wizard not found,
Using text mode installer.
Please select a repository:
AFRICA
[1] Algeria http://ctan.epst-tlemcen.dz/tex-archive
[...]
SOUTH AMERICA
[115] Chile https://ctan.dcc.uchile.cl
----
[0] default mirror http://mirror.ctan.org
[q] quit
Your selection [0]:
我查看了install-tl文件内部的第 134 行，但是我担心更改任何内容会破坏文件（无论如何，没有必要编辑它，因为以前没有必要）。
使用-gui、-gui=perltk和-gui=tci作为替代可选标志均会产生相同的结果。当然，我可以使用 中的文本模式安装程序bash，但我更喜欢使用 GUI 向导。
毋庸置疑，目前版本的p7zip、perltk和tci已经安装在我的Linux PC系统上，如下所示：
clive@clivux:~$ inxi -Fxz
System: Kernel: 5.11.0-36-generic x86_64 bits: 64 compiler: gcc v: 10.2.1 Desktop: KDE Plasma 5.21.4
Distro: Ubuntu 21.04 (Hirsute Hippo)
Machine: Type: Laptop System: HP product: HP 255 G6 Notebook PC v: Type1ProductConfigId serial: <filter>
Mobo: HP model: 8330 v: 27.33 serial: <filter> UEFI: Insyde v: F.31 date: 07/25/2018
Battery: ID-1: BAT1 charge: 29.7 Wh condition: 29.7/31.1 Wh (96%) model: Hewlett-Packard PABAS0241231 status: Full
CPU: Info: Dual Core model: AMD A6-9225 RADEON R4 5 COMPUTE CORES 2C+3G bits: 64 type: MCP arch: Excavator rev: 0
L2 cache: 1024 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 10381
Speed: 2056 MHz min/max: 1300/2600 MHz boost: enabled Core speeds (MHz): 1: 2056 2: 1297
Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] vendor: Hewlett-Packard
driver: amdgpu v: kernel bus ID: 00:01.0
Device-2: Quanta HP Webcam type: USB driver: uvcvideo bus ID: 2-1:2
Display: x11 server: X.Org 1.20.11 driver: loaded: amdgpu,ati unloaded: fbdev,modesetting,vesa
resolution: 1366x768~60Hz
OpenGL: renderer: AMD STONEY (DRM 3.40.0 5.11.0-36-generic LLVM 12.0.0) v: 4.5 Mesa 21.0.3 direct render: Yes
Audio: Device-1: Advanced Micro Devices [AMD/ATI] vendor: Hewlett-Packard driver: snd_hda_intel v: kernel bus ID: 00:01.1
Device-2: Advanced Micro Devices [AMD] Family 15h Audio vendor: Hewlett-Packard driver: snd_hda_intel v: kernel
bus ID: 00:09.2
Sound Server: ALSA v: k5.11.0-36-generic
Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Hewlett-Packard driver: r8169 v: kernel
port: 3000 bus ID: 02:00.0
IF: enp2s0 state: down mac: <filter>
Device-2: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] driver: iwlwifi v: kernel port: 3000 bus ID: 03:00.0
IF: wlp3s0 state: up mac: <filter>
Bluetooth: Device-1: Intel Wireless-AC 3168 Bluetooth type: USB driver: btusb v: 0.8 bus ID: 1-1.4:3
Report: ID: hci0 state: up running bt-v: 2.1 lmp-v: 4.2 address: <filter>
Drives: Local Storage: total: 931.51 GiB used: 43.85 GiB (4.7%)
ID-1: /dev/sda vendor: Seagate model: ST1000LM035-1RK172 size: 931.51 GiB temp: 41 C
Partition: ID-1: / size: 913.74 GiB used: 43.17 GiB (4.7%) fs: ext4 dev: /dev/dm-1 mapped: vgkubuntu-root
ID-2: /boot size: 704.5 MiB used: 379.9 MiB (53.9%) fs: ext4 dev: /dev/sda2
ID-3: /boot/efi size: 511 MiB used: 5.2 MiB (1.0%) fs: vfat dev: /dev/sda1
Swap: ID-1: swap-1 type: partition size: 976 MiB used: 307.1 MiB (31.5%) dev: /dev/dm-2 mapped: vgkubuntu-swap_1
Sensors: System Temperatures: cpu: 30.0 C mobo: 20.0 C gpu: amdgpu temp: 29.0 C
Fan Speeds (RPM): N/A
Info: Processes: 215 Uptime: 7h 24m Memory: 3.72 GiB used: 2.21 GiB (59.5%) Init: systemd runlevel: 5 Compilers:
gcc: 10.3.0 Packages: 2534 Shell: Bash v: 5.1.4 inxi: 3.3.01
非常感谢您的帮助。