192 lines
3.0 KiB
HTML
192 lines
3.0 KiB
HTML
<HTML
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>Counting Files in the Current Directory</TITLE
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>Bash Prompt HOWTO: </TH
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>Chapter 11. Prompt Code Snippets</TD
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>11.3. Counting Files in the Current Directory</H1
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><P
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>To determine how many files there are in the current directory, put in
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<TT
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CLASS="USERINPUT"
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><B
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>ls -1 | wc -l</B
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></TT
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>. This uses <TT
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CLASS="USERINPUT"
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><B
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>wc</B
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></TT
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>
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to do a count of the number of lines (-l) in the output of
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<TT
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CLASS="USERINPUT"
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><B
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>ls -1</B
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></TT
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>. It doesn't count dotfiles. Please note that
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<TT
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CLASS="USERINPUT"
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><B
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>ls -l</B
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></TT
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> (that's an "L" rather than a "1" as in the
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previous examples) which I used in previous versions of this HOWTO will
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actually give you a file count one greater than the actual count. Thanks
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to Kam Nejad for this point. </P
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><P
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>If you want to count only files and NOT include symbolic links (just an
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example of what else you could do), you could use <TT
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CLASS="USERINPUT"
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><B
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>ls -l | grep
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-v ^l | wc -l</B
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></TT
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> (that's an "L" not a "1" this time, we want a
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"long" listing here). <TT
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CLASS="USERINPUT"
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><B
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>grep</B
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></TT
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> checks for any line
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beginning with "l" (indicating a link), and discards that line (-v). </P
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><P
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>Relative speed: "ls -1 /usr/bin/ | wc -l" takes about 1.03 seconds on an
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unloaded 486SX25 (/usr/bin/ on this machine has 355 files). "ls -l
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/usr/bin/ | grep -v ^l | wc -l" takes about 1.19 seconds. </P
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>Total Bytes in the Current Directory</TD
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