bash remove everything after character from each line code example

Example 1: delete strings after match to eol using sed command

$ cat file | awk -F '\\.com' '{print $1".com"}'
google.com
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isuckatunix.com

Example 2: delete strings after match to eol using sed command

# You can use awk's field separator (-F) following way:
$ cat file
google.com/funny
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isuckatunix.com/ireallydo