Grep用于行中的多个值并仅输出多个值

使用 grep -oP

s='ts=2017-06-27-19-59-13-036 | result=SUCCESS | requestId=xyz | elapsed=49'

grep -oP '(result|elapsed)=\S+' <<< "$s"

result=SUCCESS
elapsed=49

或使用 gnu awk :

awk -F= -v RS=' \\| |\n' '$1 ~ /^(result|elapsed)$/' <<< "$s"

result=SUCCESS
elapsed=49

$ cat file
ts=2017-06-27-19-59-13-036 | result=SUCCESS | requestId=xyz | elapsed=49

要获得键=值对,请尝试 egrep

$ egrep -o '[a-z]*[A-Z]*[a-z]*=([0-9-]*|[A-Z]*|[a-z]*)' file
ts=2017-06-27-19-59-13-036
result=SUCCESS
requestId=xyz
elapsed=49