Linux / Unix sed: Delete Word From File / Input

I've a file as follows:

This is a test.
One bang two three
Foo dang Bar
001 0xfg 0xA
002 0xA foo bar 0xfG
I'm done

How do I delete all "words" from the above file which ends with a particular letter (say 'g') in each line? The output should be as follows:

This is a test.
One two three
Foo Bar
001 0xA
002 0xA foo bar
I'm done

How do I delete regex-based word using sed or awk under Linux / Unix like operating systems?

You can use any standard Unix text editing and processing utility to find and replace/delete words from the file.

Sed example

The syntax is:

 
sed 's/\<word\>//g' input
sed -e 's/\<regex-for-word\>//g' input > output
 

In this example, delete foo word from input:

 
echo 'This is a foo test' | sed -e 's/\<foo\>//g'
 

To delete all words ending with a letter 'g' in each line, enter:

 
sed -e 's/\<[a-zA-Z0-9]*[g|G]\>//g' input
 

Awk example

The syntax is:

 
awk '{gsub("word", "");print}' input
awk '{gsub("regex", "");print}' input > output
 

In this example, delete bar word from input:

 
awk '{gsub("bar", "");print}' <<< "This is a bar test"
 

To delete all words ending with a letter 'g' in each line using gnu/awk, enter:

 
awk '{gsub("[a-zA-Z0-9]*[g|G]$", "");print}' input
 

Or

 
awk '{gsub("\\<[a-zA-Z0-9]*[g|G]\\>", "");print}' input
 

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