几年前我见过一个非常方便的应用程序：该命令显示它的第一个参数，放大以适合整个屏幕。例如...
thiscommand AA
...然后你可以看到两个非常大的 A 字母填满整个屏幕，或者...
thiscommand "[email protected]"
...然后显示电子邮件地址，其宽度等于屏幕的宽度。只需按一下键（可能q），您就可以将其关闭。我认为这个应用程序通常非常有用，当您与人交谈或进行演示时，您很快需要显示一些简短的文本，只有几个单词。
我的问题是我忘记了这个程序的名称，我很努力地通过谷歌找到，但没有成功。有人知道吗？
答案1
我认为您正在寻找 SM：屏幕消息
Package: sm
Priority: optional
Section: universe/games
Installed-Size: 99
Maintainer: Ubuntu Developers <[email protected]>
Original-Maintainer: Joachim Breitner <[email protected]>
Architecture: amd64
Source: screen-message
Version: 0.22.1-2
Depends: libc6 (>= 2.4), libcairo2 (>= 1.2.4), libglib2.0-0 (>= 2.14.0), libgtk-3-0 (>= 3.0.0), libpango-1.0-0 (>= 1.14.0), libpangocairo-1.0-0 (>= 1.14.0)
Filename: pool/universe/s/screen-message/sm_0.22.1-2_amd64.deb
Size: 14282
MD5sum: 9c3f592270a9a427d3b6685e2b17069d
SHA1: ee764a76a51717304c3adca698c28446e4d48205
SHA256: 73e896dd781d89638686d850f68aa452c6c2592993f181ef5b4db2787a3dac2a
Description-en: Displays a short text fullscreen
Screen Message will display a given multi-line message as large as
possible, fullscreen and black on white. You can specify the text either
when launching sm, or edit it while the program is running.
.
It is useful to send messages across a room, e.g. during an university
lecture. For fast startup, it is recommended to bind it to a key in your
Desktop Environment.
Description-md5: 91fe8f689d157fbba591713d7e201f4d
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
答案2
横幅;在我的系统上它被称为printerbanner.我本来打算链接到一个手册页，但我找不到，无论是在网上还是在我的硬盘上......
printerbanner横向打印文本，以允许很长的字符串，它似乎没有正常打印的选项。
示例（由 slm 提供）
$ banner ken
# # ####### # #
# # # ## #
# # # # # #
### ##### # # #
# # # # # #
# # # # ##
# # ####### # #
多个参数打印在单独的行上：
$ banner one two
####### # # #######
# # ## # #
# # # # # #
# # # # # #####
# # # # # #
# # # ## #
####### # # #######
####### # # #######
# # # # # #
# # # # # #
# # # # # #
# # # # # #
# # # # # #
# ## ## #######
感谢您提供这些示例，slm。我的printerbanner打印是横向的，像这样：
printerbanner -w 64 ken
## ##
############################################
############################################
############################################
############################################
## ####
########
###########
########## ###
## ########### ### ##
############# ####
########## ###
######## ##
######
###
##
########
################
####################
######################
#### ## ####
## ## ###
## ## ##
## ## ##
## ## ##
# ## ###
# ## ###
## ## #######
### ############
## ##########
########
## ##
##########################
##########################
##########################
##########################
## ###
##
###
###
###
## ####
##########################
##########################
#########################
######################
##
这是我在评论中提到的当前版本的 Bash 脚本生成的 PostScript 程序的示例。很抱歉缺少语法突出显示，但 lang-ps 或 lang-postscript 的突出显示很糟糕。
演示.ps
%!PS-Adobe-3.0
%%BoundingBox: 0 0 1024 768
%%Title: (TextLine)
%%Pages: 1 1
%%Creator: PSTextLine by PM 2Ring
%%Creationdate: 2014.11.07 13:30:51
%%EndComments
16 dict begin
%Use ISO Latin 1 font encoding
/ISOLatin{
dup length dict begin
{1 index /FID ne {def}{pop pop}ifelse}forall
/Encoding ISOLatin1Encoding def
currentdict
end
/IsoL1 exch definefont
}bind def
%Show string centred on the page and scaled to fill the page
/ShowCentred{
0 0 moveto
%Get string's bounding box.
dup
false charpath
flattenpath pathbbox
newpath
%Stack - Left Bottom Right Top
/y1 exch def /x1 exch def
/y0 exch def /x0 exch def
%Calculate new font scale
currentfont
/sx XM Margin sub x1 x0 sub div def
/sy YM Margin sub y1 y0 sub div def
/Scale sx sy le {sx}{sy}ifelse def
Scale scalefont setfont
%Calculate coordinates that will shift the centre of the box to the page centre
XM x0 x1 add Scale mul sub 2 div
YM y0 y1 add Scale mul sub 2 div
moveto
show
}bind def
%%Page: 1 1
gsave
/XM 1024 def
/YM 768 def
%Twice the X & Y margins
/Margin 16 def
/Times-Roman findfont
ISOLatin
72 scalefont setfont
(Unix & Linux)
ShowCentred
grestore
showpage
end
%%PageTrailer
%%Trailer
%%EOF
它应该可以在任何 PostScript 查看器中正确显示，例如okular.要使用 ImageMagick / GraphicsMagickdisplay实用程序显示它：
display -geometry 1024x768 -density 72 demo.ps
增加密度参数（例如尝试300）以提高渲染图像的质量。您可以使用display的选项在背景窗口中显示图像-backdrop；使用 Control-Q 关闭窗口。
可以修改(Unix & Linux)demo.ps中的文本字符串；程序将自动计算要使用的正确字体大小。
要将 demo.ps 文件转换为 PDF 你可以使用 ImageMagick / GraphicsMagickconvert实用程序
convert -page 1024x768 demo.ps demo.pdf
但使用起来可能更快（并且输出更紧凑）
ps2pdfwr -g1024x768 -r72 demo.ps demo.pdf
最后，这是我之前讨论的 Bash 脚本。不带参数运行它，或者使用 arg 来-h获取帮助消息；-hh打印额外的帮助。
PS文本行
#!/usr/bin/env bash
#Generate a Postscript file that prints a line of text that fills the screen
#Written by PM 2Ring 2014.11.01
#Posted to http://unix.stackexchange.com/a/164977/88378
bold(){ echo -e "\x1b[1m$*\x1b[0m"; }
help1()
{
cat << EOF
Display a single line of text at the largest scale that fits within the screen (or requested size).
This script generates a Postscript program which performs the scaling calculation and sets the text
in the requested font. The Postscript file is then displayed using the ImageMagick / GraphicsMagick
utility $(bold display), which should be installed on most modern Linux systems.
$(bold Usage:)
$(basename "$0") [-h] [-bden] [-f fontname] [-g geometry] [-m margin] [-q quality] [-s savename.ps] [-t text] text...
Options may be given in any order.
$(bold Options:)
-h : print this Help & exit. -hh prints extra help.
-b : disable the use of a Backdrop window.
-d : disable Display of the text.
-e : disable backslash Escaping of the text string.
-n : use Normal encoding instead of the default ISO Latin1 encoding.
-f : the name of the Font, either a PostScript or system font. Default = 'Times-Roman'
-g : Geometry, in WIDTHxHEIGHT format. If not given, the current default screen size is used.
-m : left & right (&/or top & bottom) Margin (in pixels) around text bounding box. Default = 8
-q : rendering Quality. Default quality = 1.0
-s : Save PostScript. Use $(bold '-s -') to save to stdout.
-t : the Text to display.
EOF
}
help2()
{
cat << EOF
By default, $(bold display) shows the text in a backdrop window. You can use Control-Q to close
$(bold display) windows, or use a right mouse click to bring up a context menu.
See the $(bold display) documentation for further information.
$(bold Text)
Multiple -t text options may be given, they will be joined together with an intervening space.
Any arguments specified after the options will be added to the text, so there is no need to quote
the text string, but it will be necessary to use -- to terminate the options section if any of the
subsequent text words begin with a - dash.
$(bold Font)
The font name must conform to the PostScript naming convention,
in particular, it cannot contain spaces. So if a font you'd like to use does
have spaces in its name try dropping the spaces or replacing them with a - dash.
$(bold Quality)
The quality setting is essentially an internal scaling factor for the $(bold display) utility.
The default quality setting of 1.0 is reasonably fast, but the outline of the text may look
jagged, especially with short text strings. Lower quality settings may be a little faster,
but the outline can look quite blurry; settings lower than 0.2 are virtually unusable.
High quality settings take longer to render but can look quite good; 2.0 should be
adequate for most purposes, 4.0 takes quite a while to render but looks great; higher settings
take even longer but the improved quality is unlikely to be noticeable.
$(bold Save)
Normally, the PostScript program generated by this script is simply piped into the $(bold display)
utility, but you may save it to a file. This allows you to show (or print) the rendered text
with other PostScript utilities. If you wish, you can edit the PostScript program by hand,
to change the font, text, page size, etc, as the text scaling calculations are performed within the
PostScript program.
To display the file "savename.ps" with okular:
okular savename.ps
To display it with GhostScript in a 1024x768 window:
gs -sDEVICE=x11alpha -dBATCH -g1024x768 -r72 savename.ps
$(bold Escape)
By default, this program prefixes all backslashes $(bold '\\') and parentheses $(bold '()') in
the text string with a backslash to convert the string to PostScript form.
You can disable this behaviour using the $(bold '-e') option.
The PostScript language uses backslash as an escape character, and it uses parentheses instead
of quotes to enclose strings; any unmatched parentheses in a string must be backslash escaped
(but matched parentheses are ok). PostScript understands various other standard C escape sequences,
including character codes represented by backslashed octal sequences, but it does not understand
hexadecimal escape sequences.
Please see a PostScript reference for further information.
$(bold Encoding)
By default, this program uses the ISO Latin 1 encoding for text, but you can use PostScript's
Normal encoding vector by specifying the $(bold '-n') option. This program does not support
Unicode text.
EOF
}
Usage()
{
help1
[[ $showhelp -gt 1 ]] && help2
exit "$1"
}
#Get args from command line
Getargs()
{
showhelp=0
backdrop="-backdrop"
display=True
escape=True
encoding=ISOLatin
font=Times-Roman
geometry=""
margin=8
quality=1.0
text=""
savename=""
while getopts ':hbdenf:g:m:q:t:s:' opt; do
case $opt in
h)
showhelp=$((showhelp+1))
;;
b)
backdrop=""
;;
d)
display=False
;;
e)
escape=False
;;
n)
encoding=""
;;
f)
font=$OPTARG
;;
g)
geometry=$OPTARG
;;
m)
margin=$OPTARG
;;
q)
quality=$OPTARG
;;
s)
savename=$OPTARG
;;
t)
text="$text $OPTARG"
;;
?)
bold "Bad option -$OPTARG"; Usage 1
;;
esac
done
shift "$((OPTIND-1))" # Shift off the options and optional --.
text="$text $*"
}
[[ $# = 0 ]] && Usage 0
Getargs "$@"
[[ $showhelp -gt 0 ]] && Usage 0
#Get current default screen dimensions if no geometry is specified
[[ -z $geometry ]] && geometry="$(xdpyinfo | awk '/dimensions:/{print $2}')"
#Trim leading & trailing spaces from the text.
read -rd '' text <<< "$text"
#Escape backslashes and parentheses
[[ $escape = True ]] && text="$(sed 's/[\()]/\\&/g' <<< "$text")"
#Allow '-' as a synonym for /dev/stdout for output file
[[ $savename = - ]] && savename=/dev/stdout
# cat << EOF
# $(bold Args)
# backdrop=<$backdrop>
# display=<$display>
# encoding=<$encoding>
# font=<$font>
# geometry=<$geometry>
# margin=<$margin>
# quality=<$quality>
# text=<$text>
# savename=<$savename>
#
# EOF
[[ -z $text ]] && { bold "No text found!"; Usage 1; }
[[ $display = False && -z $savename ]] &&
{ bold "No PostScript output or display requested!"; Usage 1; }
#Extract screen width & height from geometry string
IFS='x' read xm ym <<< "$geometry"
#Convert quality to density; the nominal density is 72 pixels per inch
density=$(bc <<< '72*'"$quality")
#Generate the PostScript file
read -rd '' postscript <<PSEOF
%!PS-Adobe-3.0
%%BoundingBox: 0 0 $xm $ym
%%Title: (TextLine)
%%Pages: 1 1
%%Creator: PSTextLine by PM 2Ring
%%Creationdate: $(date +'%Y.%m.%d %X')
%%EndComments
%%BeginProlog
16 dict begin
%Use ISO Latin 1 font encoding
/ISOLatin{
dup length dict begin
{1 index /FID ne {def}{pop pop}ifelse}forall
/Encoding ISOLatin1Encoding def
currentdict
end
/IsoL1 exch definefont
}bind def
%Show string centred on the page and scaled to fill the page
/ShowCentred{
0 0 moveto
%Get string's bounding box.
dup
false charpath
flattenpath pathbbox
newpath
%Stack - Left Bottom Right Top
/y1 exch def /x1 exch def
/y0 exch def /x0 exch def
%Calculate new font scale
currentfont
/sx XM Margin sub x1 x0 sub div def
/sy YM Margin sub y1 y0 sub div def
/Scale sx sy le {sx}{sy}ifelse def
Scale scalefont setfont
%Calculate coordinates that will shift the centre of the box to the page centre
XM x0 x1 add Scale mul sub 2 div
YM y0 y1 add Scale mul sub 2 div
moveto
show
}bind def
%%EndProlog
%%Page: 1 1
%%PageBoundingBox: 0 0 $xm $ym
gsave
/XM $xm def
/YM $ym def
%Twice the X & Y margins
/Margin $((2 * margin)) def
/$font findfont
$encoding
72 scalefont setfont
($text)
ShowCentred
grestore
showpage
end
%%PageTrailer
%%Trailer
%%EOF
PSEOF
[[ -n $savename ]] && echo >"$savename" "$postscript"
[[ $display = True ]] &&
display $backdrop -geometry "$geometry" -density "$density" PS:- <<< "$postscript"
# gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile="$savename" -g"$geometry" -r72 - <<< "$postscript"
# display $backdrop -geometry "$geometry" -density "$density" "$savename"