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刪除鍵在命令行上不起作用

  • June 18, 2020

*注意:我在 SuperUser 上問過同樣的問題,但沒有得到任何回應。我現在意識到這是一個更適合這個特定問題的論壇。

在 ksh shell 中, Delete 鍵在命令行上**無法正常工作。**當我按 Delete 時,我得到一個 ~。

我如何:

  1. *將“刪除游標處的字元”*的功能綁定 到刪除鍵盤按鈕?(Control-D 的行為就像我希望刪除按鈕能夠工作一樣,而我嘗試使用別名的嘗試沒有成功,而且很可能是幼稚的。)
  2. *將“移動到第一行”*的功能綁定到首頁鍵盤按鈕?(控制 A 現在執行此操作,但我希望 Home 執行此操作。)
  3. 將“移至行尾”的功能綁定到結束鍵盤按鈕?(Control E 現在執行此操作,但我希望 end 執行此操作。)

最終(?)更新

我偶然發現了一些有用的東西,但我不明白為什麼。這有效:

bind '^[[3'=prefix-2
bind '^[[3~'=delete-char-forward

根據http://www.qnx.com/developers/docs/6.3.2/neutrino/utilities/k/ksh.html#bind

prefix-2
Key binding: ^X, ^[[
Introduces a 2-character command sequence.

所以我**更新的問題是為什麼我需要為此使用prefix-2?**請幫我翻譯一下,這樣我就可以理解了,這樣我就不必再為此困擾大家了。

舊東西緊隨其後

更新

原來QNX中的ESC是^[. 使用該命令bind '^[[3~'='delete-char-backward',我可以讓游標用~. 這至少是一些進步——我現在知道如何為 shell 拼寫Delete Key。我在網上看到的大多數東西都說刪除鍵是^?,但這似乎對我不起作用。另外,我應該提到我正在通過 PuTTy 訪問它。

我不明白,因為Control D做了我想要刪除鍵做的事情。我嘗試eot-or-delete再次綁定它無濟於事。

這應該很簡單吧?

更新 2:

bind | grep prefix
^X = prefix-2
^[ = prefix-1
ÿ = prefix-3
^[O = prefix-2
^[[ = prefix-2


bind | grep '[^ -~]'
ÿ = prefix-3
à  = beginning-of-line
à¡ = up-history
ठ= backward-char
ঠ= forward-char
ਠ= end-of-line
à© = down-history
ଠ= delete-char-forward
à´ = backward-word
ච= forward-word

更新 3:我的更多設置

環境設置

echo $ENV
/etc/kshrc

BIND 完成輸出

bind
^A = beginning-of-line
^B = backward-char
^C = abort
^D = eot-or-delete
^E = end-of-line
^F = forward-char
^G = abort
^H = delete-char-backward
^I = complete
^J = newline
^K = kill-to-eol
^L = redraw
^M = newline
^N = down-history
^O = newline-and-next
^P = up-history
^R = search-history
^T = transpose-chars
^U = kill-line
^V = version
^W = kill-region
^X = prefix-2
^Y = yank
^[ = prefix-1
^\ = no-op
^] = search-character-forward
^^ = quote
^_ = eot
^? = delete-char-backward
ÿ = prefix-3
^[^H = delete-word-backward
^[^X = complete-file
^[^[ = complete
^[^] = search-character-backward
^[  = set-mark-command
^[# = comment
^[* = expand-file
^[. = prev-hist-word
^[0 = set-arg
^[1 = set-arg
^[2 = set-arg
^[3 = set-arg
^[4 = set-arg
^[5 = set-arg
^[6 = set-arg
^[7 = set-arg
^[8 = set-arg
^[9 = set-arg
^[< = beginning-of-history
^[= = complete-list
^[> = end-of-history
^[? = list
^[C = capitalize-word
^[L = downcase-word
^[O = prefix-2
^[U = upcase-word
^[[ = prefix-2
^[_ = prev-hist-word
^[b = backward-word
^[c = capitalize-word
^[d = delete-word-forward
^[f = forward-word
^[g = goto-history
^[h = delete-word-backward
^[l = downcase-word
^[u = upcase-word
^[y = yank-pop
^[^? = delete-word-backward
^X^X = exchange-point-and-mark
^X^Y = list-file
^X^[ = complete-command
^X? = list-command
^XA = up-history
^XB = down-history
^XC = forward-char
^XD = backward-char
^XH = beginning-of-line
^XP = delete-char-forward
^XY = end-of-line
^Xc = forward-word
^Xd = backward-word
^Xw = end-of-line
à  = beginning-of-line
à¡ = up-history
ठ= backward-char
ঠ= forward-char
ਠ= end-of-line
à© = down-history
ଠ= delete-char-forward
à´ = backward-word
ච= forward-word

/etc/kshrc

/etc # cat kshrc
case $- in
*i*)
   export SHELL_COLOR_BLUE="print -n \\033[0;34m"
   export SHELL_COLOR_GREEN="print -n \\033[0;32m"
   export SHELL_COLOR_RED="print -n \\033[0;31m"
   export SHELL_COLOR_LIGHTGRAY="print -n \\033[0;37m"
   export SHELL_COLOR_YELLOW="print -n \\033[1;33m"

   export COLOR_BLACK="\\033[0;30m"
   export COLOR_BLUE="\\033[0;34m"
   export COLOR_GREEN="\\033[0;32m"
   export COLOR_CYAN="\\033[0;36m"
   export COLOR_RED="\\033[0;31m"
   export COLOR_PURPLE="\\033[0;35m"
   export COLOR_BROWN="\\033[0;33m"
   export COLOR_LIGHTGRAY="\\033[0;37m"
   export COLOR_DARKGRAY="\\033[1;30m"
   export COLOR_LIGHTBLUE="\\033[1;34m"
   export COLOR_LIGHTGREEN="\\033[1;32m"
   export COLOR_LIGHTCYAN="\\033[1;36m"
   export COLOR_LIGHTRED="\\033[1;31m"
   export COLOR_LIGHTPURPLE="\\033[1;35m"
   export COLOR_YELLOW="\\033[1;33m"
   export COLOR_WHITE="\\033[1;37m"

   if [[ `id -u` -eq 0 ]]; then
       export PS1=`$SHELL_COLOR_RED`'$(hostname -s):'`$SHELL_COLOR_YELLOW`'$(pwd) # '`$SHELL_COLOR_LIGHTGRAY`
   else
       export PS1=`$SHELL_COLOR_BLUE`'$(hostname -s):'`$SHELL_COLOR_GREEN`'$(pwd) $ '`$SHELL_COLOR_LIGHTGRAY`
   fi

esac

膩子設置:

在此處輸入圖像描述

可能重要也可能不重要但可以提供背景的註釋:

外殼是“PD KSH v5.2.14 99/07/13.2”。是的,我沒有升級的選擇……它是一個嵌入式系統。“獲得現代外殼”不是一個可行的答案。作業系統是 QNX Neutrino 6.4.1。

綁定顯示如下:

bind | grep del
^D = eot-or-delete
^H = delete-char-backward
^? = delete-char-backward
^[^H = delete-word-backward
^[d = delete-word-forward
^[h = delete-word-backward
^[^? = delete-word-backward
^XP = delete-char-forward
ଠ= delete-char-forward

infocmp 顯示以下內容:

infocmp  #      Reconstructed via infocmp from file:
/usr/lib/terminfo/x/xterm xterm|vs100|xterm terminal emulator,
       am, km, mir, msgr, xenl, xon,
       cols#80, it#8, lines#65, vt@,
       acsc=Oa``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
       bel=^G, blink=@, bold=\E[1m, clear=\E[H\E[2J, cr=^M,
       csr=\E[%i%p1%d;%p2%dr, cub=\E[%p1%dD, cub1=^H,
       cud=\E[%p1%dB, cud1=\E[B, cuf=\E[%p1%dC, cuf1=\E[C,
       cup=\E[%i%p1%d;%p2%dH, cuu=\E[%p1%dA, cuu1=\E[A,
       dch=\E[%p1%dP, dch1=\E[P, dl=\E[%p1%dM, dl1=\E[M, ed=\E[J,
       el=\E[K, el1=\E[1K$<3>, enacs=\E(B\E)0, home=\E[H, ht=^I,
       hts=\EH, ich=\E[%p1%d@, ich1=\E[2~, il=\E[%p1%dL, il1=\E[L,
       ind=^J, is1=\E=\E[?1l, kBEG=\ENn, kCPY=\ENs, kCRT=\ENt,
       kDL=\ENv, kEXT=\ENw, kFND=\ENx, kHLP=\ENy, kOPT=\ENz,
       ka3=\EOs, kb2=\EOr, kbs=^H, kc1=\EOq, kcan=\EOm, kclo=\ENc,
       kclr=\ENa, kcmd=\EOu, kcub1=\E[D, kcud1=\E[B, kcuf1=\E[C,
       kcuu1=\E[A, kdch1=\E[P, kend=\E[9, kf1=\E[11~, kf10=\E[21~,
       kf11=\E[23~, kf12=\E[24~, kf2=\E[12~, kf3=\E[13~,
       kf4=\E[14~, kf5=\E[15~, kf6=\E[17~, kf7=\E[18~, kf8=\E[19~,
       kf9=\E[20~, kfnd=\ENf, khlp=\ENh, khome=\E[8, khts=\ENb,
       kich1=\E[2~, kmov=\ENi, kmrk=\ENm, kmsg=\ENe, knp=\E[6~,
       kopn=\ENo, kopt=\ENk, kpp=\E[5~, kref=\ENl, kres=\ENp,
       krfr=\ENg, krpl=\ENr, krst=\ENj, ksav=\ENq, kslt=\EOM,
       ktbc=\ENd, kund=\ENu, rc=\E8, rev=\E[7m, ri=\EM, rmacs=^O,
       rmam=\E[?7l, rmkx=\E>, rmso=\E[m,
       rs1=\E>\E[1;3;4;5;6l\E[?7h\E[m\E[r\E[2J\E[H, rs2=@,
       sc=\E7,
       setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
       setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
       sgr=\E[0%?%p1%p6%|%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;m,
       sgr0=\E[m, smacs=^N, smam=\E[?7h, smkx=\E=, smso=\E[7m,
       tbc=\E[3g,

stty 顯示如下:

stty Name:  /dev/ttyp0 Type:  pseudo Opens: 2
+edit +echok +echonl
+osflow  intr=^C  quit=^\ erase=^?  kill=^U   eof=^D start=^Q  stop=^S  susp=^Z lnext=^V   min=01  time=00   pr1=^[   pr2=5B  left=44 right=43
up=41  down=42   ins=40   del=50  home=48   end=59

對於 Google 員工:

唷。對於應該如此簡單的事情,這很難。

簡短的解決方案是使用以下設置刪除鍵(在kshrc或任何地方),

bind '^[[3'=prefix-2
bind '^[[3~'=delete-char-forward

並將您的 PuTTy 終端設置設置為rxvt而不是Standard.

膩子設置

真正幫助我完成這項工作的事情是: http: //www.mail-archive.com/misc@openbsd.org/msg81796.html

ksh 用 home 鍵和 end 鍵做了一些傻事。基本上,我無法讓它同時區分 Home、End 和 Delete。無論最後綁定的是什麼,所有三個鍵都可以。更改 PuTTy 為這些密鑰發送的內容非常有幫助。

注意:有些人建議如果您想查看按下某個鍵時 shell 得到的程式碼,請鍵入cat,按輸入鍵,然後按下該鍵。對於我的外殼,這不起作用。我得到~了所有的控制鍵。我所做的是按Esc一次,然後按 鍵。控制程式碼將顯示然後顯示。使用該控制程式碼,bind一切就緒。

引用自:https://unix.stackexchange.com/questions/66434