查找某些字符串序列的出现次数

Question

I want to count the number of occurences of the IP address 192.168.1.10 in a text file using grep | wc grep | wc .

The command I use is:

cat ./capture.txt|grep "192.168.1.10"|wc -w

which returns 0, and I don't know why.

Here is the content of my .txt file:

Answer 1

give this a try:

grep -Fwo '192.168.1.10' file|wc -l

• -F makes the grep take your pattern as literal string instead of regex
• -w excludes 192.168.1.101 or 192.168.1.100
• -o lists each match in a line. grep does line based match, if your pattern matched twice in a line, the result of occurrence count may be wrong.

Answer 2

cat ./capture.txt | grep "\b192\.168\.1\.10\b" -c

• \\. search for dot, not any character
• \\b match at the beginning or end of a word
• -c return the number of occurrences