Re: sed: Invalid content of \{\}

[Lawrence Velázquez]

> On Apr 18, 2021, at 12:18 PM, michael-franzese@gmx.com wrote:
> 
> Am trying to capture tho string within {}, but am getting
> 
> sed: -e expression #1, char 19: Invalid content of \{\}
> sed: -e expression #1, char 19: Invalid content of \{\}
> sed: -e expression #1, char 19: Invalid content of \{\}
> 
> 
> a="{12..30..5}"
> fa=`echo $a | sed 's/.*(\{.*\}).*/\1/g'`

Aside from some GNU extensions, sed (without -E) uses POSIX basic
regular expressions.  You should learn them instead of making
assumptions about which characters to escape and which not to.

https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03

-- 
vq