安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- How do I recursively grep all directories and subdirectories?
grep -r "texthere" The first parameter represents the regular expression to search for, while the second one represents the directory that should be searched In this case, means the current directory Note: This works for GNU grep, and on some platforms like Solaris you must specifically use GNU grep as opposed to legacy implementation For Solaris this is the ggrep command
- What is the difference between grep -e and grep -E option?
grep -e PATTERN unless, as stated in an earlier Answer and in the man pages, there are multiple search patterns, or to protect a pattern beginning with a hyphen (-)
- linux - What is the point of grep -q - Stack Overflow
Moreover, this is a lot faster than a regular grep invocation, since it can exit immediately when the first match is found, rather than needing to unconditionally read (and write) to the end of file
- How to run grep with multiple AND patterns? - Unix Linux Stack Exchange
I would like to get the multi pattern match with implicit AND between patterns, i e equivalent to running several greps in a sequence: grep pattern1 | grep pattern2 | So how to convert it to
- Using the star sign in grep - Stack Overflow
grep itself doesn't support wildcards on most platforms You have to use egrep to use wildcards Shells have a different syntax "*" in the shell is <any string> In egrep it's an operator that says "0 to many of the previous entity" In grep, it's just a regular character
- Find all files containing a specific text (string) on Linux
How do I find all files containing a specific string of text within their file contents? The following doesn't work It seems to display every single file in the system find -type f -exec grep -H '
- How do I fetch lines before after the grep result in bash?
The second grep command "grep -oP", finds the matching string and prints everything after it until it reaches the end of the current line, while excluding the matching string
- grep -P no longer works. How can I rewrite my searches?
brew install grep Then it's available as ggrep (GNU grep) it doesn't replaces the system grep (you need to put the installed grep before the system one on the PATH) The version installed by brew includes the -P option, so you don't need to change your scripts
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