Ad:

Shell Scripting Discussion Thread
Unsolved
Views: 1937

Sep 5th, 2006

Processing file by file in a txt, and storing the name of the file being processed

Expand Post »

Hi!,
I'm kinda new to shell scripting, Here's a problem that I have faced and dunno how to solve:
First,
I want my script to rename the files stored in a .txt file line by line(there's no pattern that I can use with mv, so I want mv to deal with a file generated by ls /home/whatever/ > whatever_files.txt). So, Let's that that now mv is dealing with the first line in whatever_files.txt which has a file name /home/whatever/whatever545.jpg, I want the new file to be called file_whatever.jpg. But in order to do that, I figured out that I must store the name of the file in a variable and having a mv command which looks like this:
mv whateverhey.jpg file_$filename

but I dunno how to store that name in a variable and how to make mv deal with files listed in a text file.

Thanks!

Similar Threads

Pops Ups ect on laptop in Viruses, Spyware and other Nasties
First year assigment on reading file, sorting and outputting invoice in C++
Noob: needs help with file I/O in C
Help with multiple Windows 2000 partitions! in Windows NT / 2000 / XP
About blank error message keeps comming back in Viruses, Spyware and other Nasties

Alphabeta

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

3 posts
since Sep 2006

Permalink

Sep 6th, 2006

Re: Processing file by file in a txt, and storing the name of the file being processed

I figured out that I can a non C-style loop to work with all the files in directory but when I write this it doesn't work:
for filename in *
do
mv $filename hello_$filename
done

????

Thanks

Alphabeta

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

3 posts
since Sep 2006

Permalink

Sep 6th, 2006

Re: Processing file by file in a txt, and storing the name of the file being processed

Shell Scripting Syntax (Toggle Plain Text)
cd /to/my/directory
find .  -name '*.jpg' | \
while read file
do
    mv $file "new"$file
done
cd /to/my/directory
find .  -name '*.jpg' | \
while read file
do
    mv $file "new"$file
done

PS: mv works only within a filesystem. Even though you may be
in directories that are close in terms of directory trees does not mean there are no intervening mountpoints. -

jim mcnamara

Reputation Points: 62

Solved Threads: 10

Junior Poster

Offline

179 posts
since May 2004

Permalink

Sep 6th, 2006

Re: Processing file by file in a txt, and storing the name of the file being processed

I indeed sometimes try to access some directories behind mount points(for example, hdb1 mounted on /home/user/myfolder), while the script is being executed from the user home directory, Do you mean that this can result in some problems?

Thanks!

Alphabeta

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

3 posts
since Sep 2006

Permalink

Sep 8th, 2006

Re: Processing file by file in a txt, and storing the name of the file being processed

In that case you have to use cp. mv does not mv over mount points.

jim mcnamara

Reputation Points: 62

Solved Threads: 10

Junior Poster

Offline

179 posts
since May 2004

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Shell Scripting Forum Timeline: Interacting with other Applications via dtksh

Next Thread in Shell Scripting Forum Timeline: Making a shell script executable from any directory

DaniWeb Message

Cancel Changes

User Name
Password