Find all files containing a specific text (string) on Linux?
2013年6月6日 · This grep command will give you a precise result when you are searching for specific text on Linux - grep -inRsH "Text to be searched" /path/to/dir (it can be '.') i stands for ignore case distinctions. R stands for recursive and it also include symlinks. It is better to use 'R' instead of 'r' n stands for "it will print line number".
linux - How to grep for the dollar symbol ($)? - Stack Overflow
% cat temp $$$ hello1 $$ hello2 hello3 ## hello4 hello5 $$$ % cat temp | grep "$$$" Illegal variable name. % cat temp | grep "\$\$\$" Variable name must contain alphanumeric characters. I want to grep for $$$ and I expect the result to be
linux - How do I recursively grep all directories and subdirectories ...
2010年1月1日 · another syntax to grep a string in all files on a Linux system recursively. grep -irn "string" a breakdown of the command-r, --recursive indicates a recursive search that finds the specified string in the given directory and sub directory looking for the specific string in files, binary, etc-i, --ignore-case
How to use sed/grep to extract text between two words?
2012年11月6日 · user@linux:~$ echo "Here is a String" Here is a String user@linux:~$ Let's try to remove Here string with substition option in sed. user@linux:~$ echo "Here is a String" | sed 's/Here //' is a String user@linux:~$ At this point, I believe …
bash - How to grep, excluding some patterns? - Stack Overflow
grep -n "loom" `grep -l "loom" tt4.txt` | grep -v "gloom" #this part gets the filenames with "loom" #this part gets the lines with "loom" #this part gets the linenumber, #filename and actual line Share
linux - grep between two files - Stack Overflow
2016年5月10日 · It's likely that the txt file contains carriage-return/linefeed pairs which are screwing up the grep. As I suggested in a comment, try this: tr -d '\015' < file1 > file1a grep -Fwf file1a file2 The tr invocation deletes all the carriage returns, giving you a proper Unix/Linux text file with only newlines (\n) as line terminators.
How do you extract IP addresses from files using a regex in a linux ...
2018年3月14日 · Everyone here is using really long-handed regular expressions but actually understanding the regex of POSIX will allow you to use a small grep command like this for printing IP addresses. grep -Eo "(([0-9]{1,3})\.){3}([0-9]{1,3})" (Side note) This doesn't ignore invalid IPs but it is very simple.
regex - Using the star sign in grep - Stack Overflow
2016年7月6日 · grep '*abc*' file2 This one return *abc, because there is a * in the front, it matches the pattern *abc*. (3) grep '*abc*' file3 This one return *abcc because there is a * in the front and 2 c at the tail. so it matches the pattern *abc* (4) grep '.*abc.*' file1 This one return abc because .* indicate 0 or more repetition of any character.
linux - Regex (grep) for multi-line search needed - Stack Overflow
2010年9月15日 · Without the need to install the grep variant pcregrep, you can do a multiline search with grep. $ grep -Pzo "(?s)^(\s*)\N*main.*?{.*?^\1}" *.c Explanation:-P activate perl-regexp for grep (a powerful extension of regular expressions)-z Treat the input as a set of lines, each terminated by a zero byte (the ASCII NUL character) instead of a ...
Negative matching using grep (match lines that do not contain foo)
grep -v is your friend: grep --help | grep invert -v, --invert-match select non-matching lines. Also check out the related -L (the complement of -l).-L, --files-without-match only print FILE names containing no match