As with most things in Linux, there is more than one way to do this. You could also use egrep and a different set of expressions. But the example above works just fine and is a pretty simple way to extract the email addresses and ignore everything else. Grep IP addresses Greping for ...
[root@server001 ~]# grep -v root /etc/containerd/config.toml # Copyright 2018-2022 Docker Inc. # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the Licens...
Global regular expression print is a versatile utility that searches plain text in the system with different regular expressions. We can perform many operations with the help of Grep; we can explore in files, display line number as output, and how to ignore blank spaces, and use Grep recursive...
- Search only lines that match entirely in files: fgrep -x path/to/file1 path/to/file2 - 【重要】Count the number of lines that match the given string in a file: fgrep -c search_string path/to/file - Show the line number in the file along with the line matched: fgrep -n search...
-n, --line-number print line number with output lines:在输出行的前面输出行号 --line-buffered flush output on every line:每一行输出后都清除缓存 -H, --with-filename print the file name for each match:在每一个匹配的行前打印文件名
This is useful with options that prefix their output to the actual content: -H,-n, and -b. In order to improve the probability that lines from a single file will all start at the same column, this also causes the line number and byte offset (if present) to be printed in a minimum...
-n, --line-number print line number with output lines --line-buffered flush output on every line -H, --with-filename print the file name for each match -h, --no-filename suppress the file name prefix on output --label=LABEL use LABEL as the standard input file name prefix ...
-n, --line-number print line number with output lines --line-buffered flush output on every line -H, --with-filename print the file name for each match -h, --no-filename suppress the file name prefix on output --label=LABEL use LABEL as the standard input file name prefix ...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
Output control:-m,--max-count=NUMstop afterNUMmatches-b,--byte-offset print the byte offsetwithoutput lines-n,--line-number print line numberwithoutput lines--line-buffered flush output on every line-H,--with-filename print the file nameforeach match-h,--no-filename suppress the file ...