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Groups > linux.debian.user > #264650
| From | debian-user@howorth.org.uk |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... |
| Date | 2023-12-11 19:20 +0100 |
| Message-ID | <HJT2N-cTf1-7@gated-at.bofh.it> (permalink) |
| References | <HJEGt-cJY3-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Albretch Mueller <lbrtchx@gmail.com> wrote:
> echo "abc123" > file.txt
> ftype=$(file --brief file.txt)
> echo "// __ \$ftype: |${ftype}|"
> ftypelen=${#ftype}
> echo "// __ \$ftypelen: |${ftypelen}|"
>
> # removing spaces ...
> ftype2=$(echo "${ftype}" | tr --complement --squeeze-repeats
> '[A-Za-z0-9.]' '_');
> echo "// __ \$ftype2: |${ftype2}|"
> ftype2len=${#ftype2}
> echo "// __ \$ftype2len: |${ftype2len}|"
>
> lbrtchx
Short answer. tr doesn't append anything. echo does output a linefeed
at the end of the string, unless you stop it. tr dutifully translates
that to an underscore.
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why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-11 04:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Greg Wooledge <greg@wooledge.org> - 2023-12-11 04:40 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-11 09:10 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... <tomas@tuxteam.de> - 2023-12-11 09:40 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-11 12:30 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... tomas@tuxteam.de - 2023-12-11 13:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Greg Wooledge <greg@wooledge.org> - 2023-12-11 13:40 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Greg Wooledge <greg@wooledge.org> - 2023-12-11 13:50 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... <tomas@tuxteam.de> - 2023-12-11 14:20 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Greg Wooledge <greg@wooledge.org> - 2023-12-11 14:30 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-11 15:10 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Max Nikulin <manikulin@gmail.com> - 2023-12-11 16:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Greg Wooledge <greg@wooledge.org> - 2023-12-11 16:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... <tomas@tuxteam.de> - 2023-12-11 16:10 +0100
"echo" literally in sh scripts (was: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ...) Stefan Monnier <monnier@iro.umontreal.ca> - 2023-12-11 16:20 +0100
Re: "echo" literally in sh scripts (was: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ...) Greg Wooledge <greg@wooledge.org> - 2023-12-11 18:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-11 20:00 +0100
Re: why would "tr --complement --squeeze-repeats ..." append the substitution char once more? ... debian-user@howorth.org.uk - 2023-12-11 19:20 +0100
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