shell replace everything after string code example

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

# To explicitly delete everything that comes after ".com", just tweak your existing sed solution to replace ".com(anything)" with ".com":
sed 's/\.com.*/.com/' file.txt

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