How to get filename without extension from file path in Ruby

Question

How can I get the filename from a file path in Ruby   For example if I have a path of  C  projects blah dll  and I just want the  blah    Is there a LastIndexOf method in Ruby

User · Answer

Jonathan Lonowski answered perfectly  but there is something that none of the answers mentioned here  Instead of File  extname  you can directly use a      to get the file name   File basename  C   projects  blah dll             gt   C   projects  blah    But  if you want to get the base file name of any specific extension files  then you need to use File  extname  otherwise not

User · Answer

In case the extension is not known  it needs the   separator    irb main  024 0 gt  f    C  foobar blah txt  gsub             gt   C  foobar blah txt  irb main  027 0 gt  File basename f File extname f     gt   blah

User · Answer

In case the extension is not known  it needs the   separator    irb main  024 0 gt  f    C  foobar blah txt  gsub             gt   C  foobar blah txt  irb main  027 0 gt  File basename f File extname f     gt   blah

User · Answer

Jonathan Lonowski answered perfectly  but there is something that none of the answers mentioned here  Instead of File  extname  you can directly use a      to get the file name   File basename  C   projects  blah dll             gt   C   projects  blah    But  if you want to get the base file name of any specific extension files  then you need to use File  extname  otherwise not

User · Answer

If you have access to ENV variables  scan combined with this little regex  which finds the last but one word  a dot  then the last word of the string  will put the file s name into  filename    filename   ENV  SCRIPT NAME   scan   w    w       Obviously  you can use scan and the regex on any path name that includes the filename  and   FILE   is the obvious choice     FILE   scan   w    w

User · Answer

Try File basename  Returns the last component of the filename given in file name  which must be formed using forward slashes             regardless of the separator used on the local file system  If suffix is given and present at the end of file name  it is removed  File basename  quot  home gumby work ruby rb quot               gt   quot ruby rb quot  File basename  quot  home gumby work ruby rb quot    quot  rb quot        gt   quot ruby quot    In your case  File basename  quot C   projects  blah dll quot    quot  dll quot       gt   quot blah quot

User · Answer

require  pathname   Pathname new   opt local bin ruby   basename     gt    lt Pathname ruby gt    I haven t been a Windows user in a long time  but the Pathname rdoc says it has no issues with directory-name separators on Windows

User · Answer

You can get directory path to current script with   File dirname   FILE

User · Answer

Try File basename  Returns the last component of the filename given in file name  which must be formed using forward slashes             regardless of the separator used on the local file system  If suffix is given and present at the end of file name  it is removed  File basename  quot  home gumby work ruby rb quot               gt   quot ruby rb quot  File basename  quot  home gumby work ruby rb quot    quot  rb quot        gt   quot ruby quot    In your case  File basename  quot C   projects  blah dll quot    quot  dll quot       gt   quot blah quot

User · Answer

If you have access to ENV variables  scan combined with this little regex  which finds the last but one word  a dot  then the last word of the string  will put the file s name into  filename    filename   ENV  SCRIPT NAME   scan   w    w       Obviously  you can use scan and the regex on any path name that includes the filename  and   FILE   is the obvious choice     FILE   scan   w    w

User · Answer

In case the extension is not known  it needs the   separator    irb main  024 0 gt  f    C  foobar blah txt  gsub             gt   C  foobar blah txt  irb main  027 0 gt  File basename f File extname f     gt   blah

User · Answer

Note that double quotes strings escape   s    C  projects blah dll  split       last

User · Answer

Try this code  Use extname   File basename  a b d test rb   File extname  a b d test rb       gt   test

User · Answer

Jonathon s answer is better  but to let you know somelist -1  is one of the LastIndexOf notations available    As krusty ar mentioned somelist last apparently is too   irb main  003 0  f    C   path  file txt  irb main  007 0 gt  f split         gt    C     path    file txt   irb main  008 0 gt  f split       -1    gt   file txt

User · Answer

You can get directory path to current script with   File dirname   FILE

User · Answer

Jonathon s answer is better  but to let you know somelist -1  is one of the LastIndexOf notations available    As krusty ar mentioned somelist last apparently is too   irb main  003 0  f    C   path  file txt  irb main  007 0 gt  f split         gt    C     path    file txt   irb main  008 0 gt  f split       -1    gt   file txt

User · Answer

Note that double quotes strings escape   s    C  projects blah dll  split       last

User · Answer

In case the extension is not known  it needs the   separator    irb main  024 0 gt  f    C  foobar blah txt  gsub             gt   C  foobar blah txt  irb main  027 0 gt  File basename f File extname f     gt   blah

User · Answer

Try File basename  Returns the last component of the filename given in file name  which must be formed using forward slashes             regardless of the separator used on the local file system  If suffix is given and present at the end of file name  it is removed  File basename  quot  home gumby work ruby rb quot               gt   quot ruby rb quot  File basename  quot  home gumby work ruby rb quot    quot  rb quot        gt   quot ruby quot    In your case  File basename  quot C   projects  blah dll quot    quot  dll quot       gt   quot blah quot

User · Answer

Note that double quotes strings escape   s    C  projects blah dll  split       last

User · Answer

Try File basename  Returns the last component of the filename given in file name  which must be formed using forward slashes             regardless of the separator used on the local file system  If suffix is given and present at the end of file name  it is removed  File basename  quot  home gumby work ruby rb quot               gt   quot ruby rb quot  File basename  quot  home gumby work ruby rb quot    quot  rb quot        gt   quot ruby quot    In your case  File basename  quot C   projects  blah dll quot    quot  dll quot       gt   quot blah quot

User · Answer

Try this code  Use extname   File basename  a b d test rb   File extname  a b d test rb       gt   test

User · Answer

require  pathname   Pathname new   opt local bin ruby   basename     gt    lt Pathname ruby gt    I haven t been a Windows user in a long time  but the Pathname rdoc says it has no issues with directory-name separators on Windows

User · Answer

Jonathon s answer is better  but to let you know somelist -1  is one of the LastIndexOf notations available    As krusty ar mentioned somelist last apparently is too   irb main  003 0  f    C   path  file txt  irb main  007 0 gt  f split         gt    C     path    file txt   irb main  008 0 gt  f split       -1    gt   file txt

User · Answer

require  pathname   Pathname new   opt local bin ruby   basename     gt    lt Pathname ruby gt    I haven t been a Windows user in a long time  but the Pathname rdoc says it has no issues with directory-name separators on Windows

User · Answer

require  pathname   Pathname new   opt local bin ruby   basename     gt    lt Pathname ruby gt    I haven t been a Windows user in a long time  but the Pathname rdoc says it has no issues with directory-name separators on Windows

User · Answer

Note that double quotes strings escape   s    C  projects blah dll  split       last

User · Answer

Jonathon s answer is better  but to let you know somelist -1  is one of the LastIndexOf notations available    As krusty ar mentioned somelist last apparently is too   irb main  003 0  f    C   path  file txt  irb main  007 0 gt  f split         gt    C     path    file txt   irb main  008 0 gt  f split       -1    gt   file txt

[ruby] How to get filename without extension from file path in Ruby

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