How to write just a char or string with dd?

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Linux

Пользователь 61654

How to write just a char or string with dd?

0

02.10.2020

10 ответов

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Martin Rys

the same way you'd write anything else?

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02.10.2020

Пользователь 61654 Автор вопроса

Kiyo 💜
write it to where?

python 2 is removed from my distro and i used 2to3 python module to convert some scripts but it is lame about first line of them #!... so i need to just write '3' at a fixed offset of some files.

0

02.10.2020

Kiyo 💜

Пользователь 61654
python 2 is removed from my distro and i used 2to3...

sed is better for that

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02.10.2020

Пользователь 61654 Автор вопроса

Kiyo 💜
sed is better for that

just tried it, it can't write to an offset(? or i don't know how) tried to change first line with this py="#!/usr/bin/env python" sed -i "1s/.*/$py/" file but i see this error "unknown option to s" don't know what is wrong.

0

02.10.2020

Kiyo 💜

Пользователь 61654
just tried it, it can't write to an offset(? or i ...

remove the 1 before s

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02.10.2020

Пользователь 61654 Автор вопроса

Kiyo 💜
remove the 1 before s

that is the line number

0

02.10.2020