How to remove a particular character after a specific word How do I remove the `,` character after a specific word? For example, I want to delete the `,` character after the word `IBM` IBM, Inc.:APP-VM-Core:4.4.2.0:04, the expected results should be IBM Inc.:APP-VM-Core:4.4.2.0:04, Meanwhile I do the following echo “IBM, Inc.:APP-VM-Core:4.4.2.0:04,” | sed s'/,//' but the problem is that it deletes every `,` character, no matter what the first word was before the `,`. In my case I want to delete the `,` only after `IBM`. Example: echo "APPLE, Inc.:APP-VM-Core:4.4.2.0:04,"| sed s'/,//' APPLE Inc.:APP-VM-Core:4.4.2.0:04, but should be as APPLE, Inc.:APP-VM-Core:4.4.2.0:04,

Try:


$ echo "IBM, Inc.:APP-VM-Core:4.4.2.0:04," | sed '/^ *IBM/s/,//'
IBM Inc.:APP-VM-Core:4.4.2.0:04,


or:


$ echo "IBM, Inc.:APP-VM-Core:4.4.2.0:04," | sed 's/^\( *IBM\),/\1/'
IBM Inc.:APP-VM-Core:4.4.2.0:04,