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Directory Traversal
This is an example of two methods for doing a depth-first traversal of a directory tree.
traverse.sh uses subshells to traverse each subdirectory.
traverse2.sh uses a single shell, which is probably more efficient.
tree.tar.gz (download) contains a simple directory tree for testing with:
a/ a/ac/ a/A a/ad/ a/ad/Another File a/aa/ a/aa/AA a/File With Spaces a/ab/ a/ab/AB d/ d/D d/da/ d/db/ d/db/This is a file d/dc/ d/dd/ README c/ c/cb/ c/C c/ca/ c/cc/ c/cd/ b/ b/ba/ b/bb/ b/B b/bc/ b/bd/ traverse2.sh
The script traverse.sh (download) runs like this:
Directory: a
File: A
Directory: aa
File: AA
Directory: ab
File: AB
Directory: ac
Directory: ad
File: Another File
File: File With Spaces
Directory: b
File: B
Directory: ba
Directory: bb
Directory: bc
Directory: bd
Directory: c
File: C
Directory: ca
Directory: cb
Directory: cc
Directory: cd
Directory: d
File: D
Directory: da
Directory: db
File: This is a file
Directory: dc
Directory: dd
File: README
File: traverse2.sh
File: traverse.sh
File: tree.tar.gz
The script traverse2.sh (download) runs like this:
Directory: ./a
File: ./a/A
Directory: ./a/aa
File: ./a/aa/AA
Directory: ./a/ab
File: ./a/ab/AB
Directory: ./a/ac
Directory: ./a/ad
File: ./a/ad/Another File
File: ./a/File With Spaces
Directory: ./b
File: ./b/B
Directory: ./b/ba
Directory: ./b/bb
Directory: ./b/bc
Directory: ./b/bd
Directory: ./c
File: ./c/C
Directory: ./c/ca
Directory: ./c/cb
Directory: ./c/cc
Directory: ./c/cd
Directory: ./d
File: ./d/D
Directory: ./d/da
Directory: ./d/db
File: ./d/db/This is a file
Directory: ./d/dc
Directory: ./d/dd
File: ./README
File: ./traverse2.sh
File: ./traverse.sh
File: ./tree.tar.gz
| My new 564-page book, Shell Scripting, published by Wiley, is on sale now. Please click "Like" on the left if you are on Facebook, or just click here to get the book. |
Steve's Bourne / Bash shell scripting tutorial
