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find docs/ -depth 3 -name '*.md' | xargs grep '(.*/' -l | \
xargs -I{} \
sed -i '' \
-e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../../\1/\2.md)%g' \
-e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([a-zA-Z_-][0-9a-zA-Z_-]*\))%(../../\1/\2.md#\3)%g' \
-e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)\(.md\)\{0\})%(../../\1/\2/\3.md)%g' \
-e 's%(/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)/\([^/#).][^/#).]*\)#\([a-zA-Z_-][0-9a-zA-Z_-]*\))%(../../\1/\2/\3.md#\4)%g' \
-e 's%](\([^:.>)#][^:.>)#]*\))%](../../\1.md)%g' \
-e 's%](\([^:.>)#][^:.>)#]*\)#\([^:.>)#][^:.>)#]*\))%](../../\1.md#\2)%g' \
{}
Related to https://github.com/flokoe/bash-hackers-wiki/issues/10
36 lines
744 B
Markdown
36 lines
744 B
Markdown
# Grouping commands in a subshell
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## Synopsis
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( <LIST> )
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## Description
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The [list](../../syntax/basicgrammar.md#lists) `<LIST>` is executed in a
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separate shell - a subprocess. No changes to the environment (variables
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etc\...) are reflected in the \"main shell\".
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## Examples
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Execute a command in a different directory.
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``` bash
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echo "$PWD"
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( cd /usr; echo "$PWD" )
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echo "$PWD" # Still in the original directory.
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```
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## Portability considerations
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- The subshell compound command is specified by POSIX.
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- Avoid ambiguous syntax.
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``` bash
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(((1+1))) # Equivalent to: (( (1+1) ))
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```
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## See also
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- [grouping commands](../../syntax/ccmd/grouping_plain.md)
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- [Subshells on Greycat\'s wiki](http://mywiki.wooledge.org/SubShell)
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