Grep 'OR' Operator grep 与“或”一起用
Find all the lines in a file, that match any of the following patterns.
Using GREP command :
grep "pattern1|pattern2" file.txt
grep -E "pattern1|pattern2" file.txt
grep -e pattern1 -e pattern2 file.txt
egrep "pattern1|pattern2" file.txt
Using AWK command :
awk '/pattern1|pattern2/' file.txt
Using SED command :
sed -e '/pattern1/b' -e '/pattern2/b' -e d file.txt
Grep 'AND' Operator grep 与“与”一起用
Find and print all the lines in a file, that match multiple patterns.
Using GREP command :
grep -E 'pattern1.*pattern2' file.txt # in that order
grep -E 'pattern1.*pattern2|pattern2.*pattern1' file.txt # in any order
grep 'pattern1' file.txt | grep 'pattern2' # in any order
Using AWK command :
awk '/pattern1.*pattern2/' file.txt # in that order
awk '/pattern1/ && /pattern2/' file.txt # in any order
Using SED command :
sed '/pattern1.*pattern2/!d' file.txt # in that order
sed '/pattern1/!d; /pattern2/!d' file.txt # in any order
Grep 'NOT' Operator grep 与“非”一起用
Find and print all the lines, that do not match a pattern.
Using GREP command :
grep -v 'pattern1' file.txt
Using AWK command :
awk '!/pattern1/' file.txt
Using SED command :
sed -n '/pattern1/!p' file.txt