linux - What is the point of "grep -q" - Stack Overflow
2019年5月16日 · Here's an example of grep -q: scanning the output of a command for a particular value, then performing an action if the value is found: if docker context ls | grep -q dm-manager; then docker context rm dm-manager fi If the list of docker contexts contains dm-manager then remove docker context dm-manager.
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 - "grep -rnw": search for a string in all files - Stack Overflow
explainshell helpfully explains your command, and gives an excerpt from man grep:-w, --word-regexp Select only those lines containing matches that form whole words. So just remove -w since that explicitly does what you don't want: grep -rn '/path/to/somewhere/' -e "pattern"
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 - grepping using the result of previous grep - Stack Overflow
2015年9月20日 · What you need to do is take the output of the first grep (containing the ID code) and use that in the next grep's expression. Something like: grep "^ID `grep 'xyz occured' file.log | awk '{print $2}'` status code" file.log Obviously another option would be to write a script to do this in one pass, a-la Ed's suggestion.
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
bash - Linux find and grep command together - Stack Overflow
I am trying to find a command or create a Linux script that can do this two commands and list the output. find . -name '*bills*' -print this prints all the files./may/batch_bills_123.log ./april/batch_bills_456.log .. from this result I want to do a grep for a word I do this manually right now. grep 'put' ./may/batch_bill_123.log and get
What's the difference between grep -r and -R - Stack Overflow
2014年3月31日 · grep -r foobar . will only grep the files inside this directory, grep -r foobar foo will grep the files in the parent directory (..) (following the symlink given as an argument), grep -R foobar . will also grep the files in the parent directory (following the symlink not given as an argument but found while traversing the current directory).
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.