Re: use the list of files stored in a text file and process it
On Thu, Sep 30, 2010 at 3:37 PM, SJ Wright wrote: I know one of the trip-ups I often have if I spend any time away from a L/Unix environment has to do with the mv command: I often forget that it prefers absolute paths from root folders (or in the case of Cygwin, virtual ones taken as real) or dot-dot-slash relative path syntax to just /god-directory/ or what-have-you. Many other commands, particularly ls and ln -s, are likewise particular about their paths. (general you meant below) Unix commands are not particular about their paths. They just trust you to give the correct file names. If the file name does not begin with a slash, it is relative to the current directory. That may or may not be what you intended. Using absolute paths ensures that the meaning of a filename is not influenced by the current directory; but using relative paths is often shorter. If you have trouble remembering what the current directory is, try setting the prompt to always print the current directory, like this: PS1='\[\e]0;\w\a\]\n\[\e[32m\...@\h \[\e[33m\]\w\[\e[0m\]\n\t \$ ' -- GCS a+ e++ d- C++ ULS$ L+$ !E- W++ P+++$ L w++$ tv+ b++ DI D++ 5++ Life is complex, with real and imaginary parts. Ok, it boots. Which means it must be bug-free and perfect. -- Linus Torvalds People disagree with me. I just ignore them. -- Linus Torvalds -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
Csaba Raduly wrote: On Thu, Sep 30, 2010 at 3:37 PM, SJ Wright wrote: I know one of the trip-ups I often have if I spend any time away from a L/Unix environment has to do with the mv command: I often forget that it prefers absolute paths from root folders (or in the case of Cygwin, virtual ones taken as real) or dot-dot-slash relative path syntax to just /god-directory/ or what-have-you. Many other commands, particularly ls and ln -s, are likewise particular about their paths. (general you meant below) Unix commands are not particular about their paths. They just trust you to give the correct file names. If the file name does not begin with a slash, it is relative to the current directory. That may or may not be what you intended. Using absolute paths ensures that the meaning of a filename is not influenced by the current directory; but using relative paths is often shorter. If you have trouble remembering what the current directory is, try setting the prompt to always print the current directory, like this: PS1='\[\e]0;\w\a\]\n\[\e[32m\...@\h \[\e[33m\]\w\[\e[0m\]\n\t \$ ' Careless of me to promulgate a baseless assertion. Cygwin and Unix are simply tools: they can do no more, and be credited or blamed with no more, than their makers or users direct them or design them to do. SJ Wright -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 You will also run into problems with xargs and filenames with spaces in. In my experience, the simplest thing that works reliably with xargs and all Windoz filenames is xargs -0, so what you want is tr -s '\012\015' '\000' test.txt | xargs -0 ls Note also that find has a -print0 flag, which goes well with -0 find . -name '[whatever]' ... -print0 | xargs -0 ... ht - -- Henry S. Thompson, School of Informatics, University of Edinburgh 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 651-1426, e-mail: h...@inf.ed.ac.uk URL: http://www.ltg.ed.ac.uk/~ht/ [mail from me _always_ has a .sig like this -- mail without it is forged spam] -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFMpEHTkjnJixAXWBoRAvcjAJ4uo9c819hzVbbVovyTN8z4+/g2HQCfShCC pFsvAO0QacPuXcIQjsKqWVY= =9ZJi -END PGP SIGNATURE- -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
albert kao wrote: I store a list of files in a text file (test.txt) on Windows XP. I want to use the list of files and process it (e.g. ls). What is the command to do that? I tried the following commands but to no avail. $ cat test.txt test.txt $ cat test.txt | xargs ls : No such file or directory $ cat test.txt | xargs -delimiter=\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\n' ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\\n' ls xargs: Invalid input delimiter specification elimiter=\\n: the delimiter must be either a single cha racter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter=\\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ uname -srv CYGWIN_NT-5.1 1.7.5(0.225/5/3) 2010-04-12 19:07 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple I would also suggest that you check your filenames in test.txt to make sure, if you included paths, that they are absolute and follow the Cygwin virtual-paths (cygpath) syntax, i.e.: /cygdrive/c/... or /etc/share/... and so on. Barring that, a path in Unix notation relative to your $PWD -- or the directory where test.txt is saved -- is a good starting point (npi): something along the lines of bin/deprecated or ../man1 . I know one of the trip-ups I often have if I spend any time away from a L/Unix environment has to do with the mv command: I often forget that it prefers absolute paths from root folders (or in the case of Cygwin, virtual ones taken as real) or dot-dot-slash relative path syntax to just /god-directory/ or what-have-you. Many other commands, particularly ls and ln -s, are likewise particular about their paths. Steve W. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
On 9/30/2010 9:37 AM, SJ Wright wrote: I know one of the trip-ups I often have if I spend any time away from a L/Unix environment has to do with the mv command: I often forget that it prefers absolute paths from root folders (or in the case of Cygwin, virtual ones taken as real) or dot-dot-slash relative path syntax to just /god-directory/ or what-have-you. Many other commands, particularly ls and ln -s, are likewise particular about their paths. That's a sweeping statement without any supporting data. I guess all I can say is that my experience doesn't coincide with your statements. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 216 Dalton Rd. (508) 893-9889 - FAX Holliston, MA 01746 _ A: Yes. Q: Are you sure? A: Because it reverses the logical flow of conversation. Q: Why is top posting annoying in email? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
I store a list of files in a text file (test.txt) on Windows XP.
I want to use the list of files and process it (e.g. ls).
What is the command to do that?
I tried the following commands but to no avail.
$ cat test.txt
test.txt
$ cat test.txt | xargs ls
: No such file or directory
snip...
Try something like cat test.txt | xargs -i ls {} or cat test.txt | xargs -t
ls I suspect the first one will work for you and the second one will show you
the command line before running the command (to help you debug in future).
Sincerely,
Brian S. Wilson
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use the list of files stored in a text file and process it
I store a list of files in a text file (test.txt) on Windows XP. I want to use the list of files and process it (e.g. ls). What is the command to do that? I tried the following commands but to no avail. $ cat test.txt test.txt $ cat test.txt | xargs ls : No such file or directory $ cat test.txt | xargs -delimiter=\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\n' ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\\n' ls xargs: Invalid input delimiter specification elimiter=\\n: the delimiter must be either a single cha racter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter=\\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ uname -srv CYGWIN_NT-5.1 1.7.5(0.225/5/3) 2010-04-12 19:07 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
On Wed, Sep 29, 2010 at 03:39:10PM +, albert kao wrote: I store a list of files in a text file (test.txt) on Windows XP. I want to use the list of files and process it (e.g. ls). What is the command to do that? I tried the following commands but to no avail. $ cat test.txt test.txt $ cat test.txt | xargs ls : No such file or directory It looks like you have CRLF line endings in the file. Run test.txt through d2u and the above command should work. It looks like you can't just use xargs --delimiter since that option takes only a single character. So: d2u test.txt | xargs ls cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: use the list of files stored in a text file and process it
On Wed, Sep 29, 2010 at 9:39 AM, albert kao wrote: I store a list of files in a text file (test.txt) on Windows XP. I want to use the list of files and process it (e.g. ls). What is the command to do that? I tried the following commands but to no avail. $ cat test.txt test.txt $ cat test.txt | xargs ls : No such file or directory $ cat test.txt | xargs -delimiter=\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\n' ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter='\\n' ls xargs: Invalid input delimiter specification elimiter=\\n: the delimiter must be either a single cha racter or an escape sequence starting with \. $ cat test.txt | xargs -delimiter=\\n ls xargs: Invalid input delimiter specification elimiter=\n: the delimiter must be either a single char acter or an escape sequence starting with \. $ uname -srv CYGWIN_NT-5.1 1.7.5(0.225/5/3) 2010-04-12 19:07 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple $ ls $(cat test.txt) -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
