这将完全正常工作。简单的短。如果要计算文件夹中存在的文件数量。

ls | wc -l

对于名称中有空格的目录…(基于上面的各种答案)—递归打印目录名称和文件数量:

find . -mindepth 1 -type d -print0 | while IFS= read -r -d '' i ; do echo -n $i": " ; ls -p "$i" | grep -v / | wc -l ; done

示例(为便于阅读而格式化):

pwd
  /mnt/Vancouver/Programming/scripts/claws/corpus

ls -l
  total 8
  drwxr-xr-x 2 victoria victoria 4096 Mar 28 15:02 'Catabolism - Autophagy; Phagosomes; Mitophagy'
  drwxr-xr-x 3 victoria victoria 4096 Mar 29 16:04 'Catabolism - Lysosomes'

ls 'Catabolism - Autophagy; Phagosomes; Mitophagy'/ | wc -l
  138

## 2 dir (one with 28 files; other with 1 file):
ls 'Catabolism - Lysosomes'/ | wc -l
  29

使用tree可以更好地可视化目录结构:

tree -L 3 -F .
  .
  ├── Catabolism - Autophagy; Phagosomes; Mitophagy/
  │   ├── 1
  │   ├── 10
  │   ├── [ ... SNIP! (138 files, total) ... ]
  │   ├── 98
  │   └── 99
  └── Catabolism - Lysosomes/
      ├── 1
      ├── 10
      ├── [ ... SNIP! (28 files, total) ... ]
      ├── 8
      ├── 9
      └── aaa/
          └── bbb

  3 directories, 167 files

man find | grep mindep
  -mindepth levels
    Do not apply any tests or actions at levels less than levels
    (a non-negative integer).  -mindepth 1 means process all files
    except the starting-points.

Ls -p | grep -v /(下面使用)来自https://unix.stackexchange.com/questions/48492/list-only-regular-files-but-not-directories-in-current-directory的答案2

find . -mindepth 1 -type d -print0 | while IFS= read -r -d '' i ; do echo -n $i": " ; ls -p "$i" | grep -v / | wc -l ; done
./Catabolism - Autophagy; Phagosomes; Mitophagy: 138
./Catabolism - Lysosomes: 28
./Catabolism - Lysosomes/aaa: 1

应用程序:我想找到几百个目录中的最大文件数量(所有深度= 1)[下面的输出再次格式化的可读性]:

date; pwd
    Fri Mar 29 20:08:08 PDT 2019
    /home/victoria/Mail/2_RESEARCH - NEWS

time find . -mindepth 1 -type d -print0 | while IFS= read -r -d '' i ; do echo -n $i": " ; ls -p "$i" | grep -v / | wc -l ; done > ../../aaa
    0:00.03

[victoria@victoria 2_RESEARCH - NEWS]$ head -n5 ../../aaa
    ./RNA - Exosomes: 26
    ./Cellular Signaling - Receptors: 213
    ./Catabolism - Autophagy; Phagosomes; Mitophagy: 138
    ./Stress - Physiological, Cellular - General: 261
    ./Ancient DNA; Ancient Protein: 34

[victoria@victoria 2_RESEARCH - NEWS]$ sed -r 's/(^.*): ([0-9]{1,8}$)/\2: \1/g' ../../aaa | sort -V | (head; echo ''; tail)

    0: ./Genomics - Gene Drive
    1: ./Causality; Causal Relationships
    1: ./Cloning
    1: ./GenMAPP 2
    1: ./Pathway Interaction Database
    1: ./Wasps
    2: ./Cellular Signaling - Ras-MAPK Pathway
    2: ./Cell Death - Ferroptosis
    2: ./Diet - Apples
    2: ./Environment - Waste Management

    988: ./Genomics - PPM (Personalized & Precision Medicine)
    1113: ./Microbes - Pathogens, Parasites
    1418: ./Health - Female
    1420: ./Immunity, Inflammation - General
    1522: ./Science, Research - Miscellaneous
    1797: ./Genomics
    1910: ./Neuroscience, Neurobiology
    2740: ./Genomics - Functional
    3943: ./Cancer
    4375: ./Health - Disease 

sort -V是一个自然排序. ...所以，我在这些(claw Mail)目录中的最大文件数量是4375个文件。如果我在每个目录中留下(https://stackoverflow.com/a/55409116/1904943)这些文件名——它们都是以数字命名的，从1开始——并填充到总共5个数字，应该没问题。

齿顶高

查找文件总数，子目录在一个目录。

$ date; pwd
Tue 14 May 2019 04:08:31 PM PDT
/home/victoria/Mail/2_RESEARCH - NEWS

$ ls | head; echo; ls | tail
Acoustics
Ageing
Ageing - Calorie (Dietary) Restriction
Ageing - Senescence
Agriculture, Aquaculture, Fisheries
Ancient DNA; Ancient Protein
Anthropology, Archaeology
Ants
Archaeology
ARO-Relevant Literature, News

Transcriptome - CAGE
Transcriptome - FISSEQ
Transcriptome - RNA-seq
Translational Science, Medicine
Transposons
USACEHR-Relevant Literature
Vaccines
Vision, Eyes, Sight
Wasps
Women in Science, Medicine

$ find . -type f | wc -l
70214    ## files

$ find . -type d | wc -l
417      ## subdirectories

根据上面给出的回复和评论，我列出了下面的文件计数清单。特别是它结合了@Greg Bell提供的解决方案和@Arch Stanton的评论 & @Schneems

计数当前目录和子目录中的所有文件

function countit { find . -maxdepth 1000000 -type d -print0 | while IFS= read -r -d '' i ; do file_count=$(find "$i" -type f | wc -l) ; echo "$file_count: $i" ; done }; countit | sort -n -r >file-count.txt

计数当前目录及子目录中所有给定名称的文件

function countit { find . -maxdepth 1000000 -type d -print0 | while IFS= read -r -d '' i ; do file_count=$(find "$i" -type f | grep <enter_filename_here> | wc -l) ; echo "$file_count: $i" ; done }; countit | sort -n -r >file-with-name-count.txt

在我的电脑上，rsync比在接受的答案中找到| wc -l快一点:

$ rsync --stats --dry-run -ax /path/to/dir /tmp

Number of files: 173076
Number of files transferred: 150481
Total file size: 8414946241 bytes
Total transferred file size: 8414932602 bytes

第二行是文件的数量，在上面的例子中是150,481。作为奖励，您还可以获得总大小(以字节为单位)。

备注:

第一行是文件、目录、符号链接等的总和，这就是为什么它比第二行大。 ——dry-run(或简称-n)选项对于不实际传输文件非常重要! 我使用-x选项来“不跨越文件系统边界”，这意味着如果你为/执行它，并且附加了外部硬盘，它只会计算根分区上的文件。

我们可以使用树命令来递归地显示所有的文件和文件夹。以及它显示在最后一行输出的文件夹和文件的计数。

$ tree path/to/folder/
path/to/folder/
├── a-first.html
├── b-second.html
├── subfolder
│   ├── readme.html
│   ├── code.cpp
│   └── code.h
└── z-last-file.html

1 directories, 6 files

对于树命令的最后一行输出，我们可以在它的输出上使用tail命令

$ tree path/to/folder/ | tail -1
1 directories, 6 files

为了安装树，我们可以使用下面的命令

$ sudo apt-get install tree

这种过滤格式的替代方法计算所有可用的grub内核模块:

ls -l /boot/grub/*.mod | wc -l