Apa perbedaan antara perintah find dan findstr di Windows?

Di Windows, apa perbedaan antara perintah finddan findstr?

Keduanya tampaknya mencari teks dalam file:

menemukan

C:\> find /?
Searches for a text string in a file or files.

FIND [/V] [/C] [/N] [/I] [/OFF[LINE]] "string" [[drive:][path]filename[ ...]]

  /V         Displays all lines NOT containing the specified string.
  /C         Displays only the count of lines containing the string.
  /N         Displays line numbers with the displayed lines.
  /I         Ignores the case of characters when searching for the string.
  /OFF[LINE] Do not skip files with offline attribute set.
  "string"   Specifies the text string to find.
  [drive:][path]filename
             Specifies a file or files to search.

If a path is not specified, FIND searches the text typed at the prompt
or piped from another command.

findstr

C:\> findstr /?
Searches for strings in files.

FINDSTR [/B] [/E] [/L] [/R] [/S] [/I] [/X] [/V] [/N] [/M] [/O] [/P] [/F:file]
        [/C:string] [/G:file] [/D:dir list] [/A:color attributes] [/OFF[LINE]]
        strings [[drive:][path]filename[ ...]]

  /B         Matches pattern if at the beginning of a line.
  /E         Matches pattern if at the end of a line.
  /L         Uses search strings literally.
  /R         Uses search strings as regular expressions.
  /S         Searches for matching files in the current directory and all
             subdirectories.
  /I         Specifies that the search is not to be case-sensitive.
  /X         Prints lines that match exactly.
  /V         Prints only lines that do not contain a match.
  /N         Prints the line number before each line that matches.
  /M         Prints only the filename if a file contains a match.
  /O         Prints character offset before each matching line.
  /P         Skip files with non-printable characters.
  /OFF[LINE] Do not skip files with offline attribute set.
  /A:attr    Specifies color attribute with two hex digits. See "color /?"
  /F:file    Reads file list from the specified file(/ stands for console).
  /C:string  Uses specified string as a literal search string.
  /G:file    Gets search strings from the specified file(/ stands for console).
  /D:dir     Search a semicolon delimited list of directories
  strings    Text to be searched for.
  [drive:][path]filename
             Specifies a file or files to search.

Use spaces to separate multiple search strings unless the argument is prefixed
with /C.  For example, 'FINDSTR "hello there" x.y' searches for "hello" or
"there" in file x.y.  'FINDSTR /C:"hello there" x.y' searches for
"hello there" in file x.y.

Regular expression quick reference:
  .        Wildcard: any character
  *        Repeat: zero or more occurences of previous character or class
  ^        Line position: beginning of line
  $        Line position: end of line
  [class]  Character class: any one character in set
  [^class] Inverse class: any one character not in set
  [x-y]    Range: any characters within the specified range
  \x       Escape: literal use of metacharacter x
  \<xyz    Word position: beginning of word
  xyz\>    Word position: end of word

For full information on FINDSTR regular expressions refer to the online Command
Reference.

Seperti yang ditunjukkan di atas, findstrmenambahkan dukungan ekspresi reguler, jadi lebih seperti grep.

Findstr memiliki lebih banyak opsi pencarian dan mendukung ekspresi reguler. Saya menemukan bahwa findstr tidak berfungsi dengan kartu liar di nama file.

Perintah di bawah ini mengembalikan semua kemunculan string pencarian di banyak file dengan pola Quant_2013-10-25 _ *. Log

find /I "nFCT255c9A" D:\Comp1\Logs\Quant_2013-10-25_*.log 

Perintah berikut tidak mengembalikan apa-apa atau tidak berfungsi sama sekali

findstr nFCT255c9A D:\Comp1\Logs\Quantum_2013-10-25_*.log

Blog Old New Thing menyentuh alat-alat ini dalam posting ini.

Singkatnya: alat dikembangkan secara paralel untuk memenuhi kebutuhan yang sedikit berbeda; mereka tidak pernah digabungkan menjadi satu alat tunggal.

findstr memperluas fungsionalitas find dengan beberapa fitur yang bermanfaat. Beberapa tambahan kunci termasuk

1. findstr mendukung banyak string pencarian
2. findstr dapat mengambil sebagai input file yang berisi nama file atau direktori untuk dicari
3. findstr mendukung ekspresi reguler

Tidak ada fungsi yang cocok untuk file besar atau file dalam jumlah besar.

Selain yang disebutkan:

FINDSTR tidak mendukung file UTF-16, tetapi FIND mendukung.