Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
Create ISO image from CD-ROM in Linux
Answer:
1. Put the CD in your CDROM
2. umount the CD if it was mounted automatically (assume the current mount point is at /mnt/cdrom, you can type the mount command to check if your are not sure)
# umount /mnt/cdrom
3. Create the ISO image
# dd if=/dev/cdrom of=/tmp/cd.iso
How to easy remove file with strange file name?
Answer:
Sometimes, you have a file with strange file name and you want to remove, e.g. -test.txt,
e.g.
# rm -f -test.txt
rm: invalid option -- 't'
Try `rm ./-test.txt' to remove the file `-test.txt'.
Try `rm --help' for more information.
Another easy way is delete by inode.
# ls -il *
983076 -rw-r--r-- 1 john users 0 Jun 4 21:24 -test.txt
And finally delete it
# find -inum 983076 | xargs rm -fHow to ignore dummy files (e.g. from CVS, SVN) during rsync?
Answer:
During rsync, you might want to ignore a lot of dummy files, e.g. .bak, .svn, .old files, you can use the following flag as part of your rsync command.
# rsync --cvs-exclude ...
List of files skipped (rsync 3.06):
RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS .make.state .nse_depinfo *~ #* .#* ,* _$* *$ *.old *.bak *.BAK *.orig *.rej .del-* *.a *.olb *.o *.obj *.so *.exe *.Z *.elc *.ln core .svn/ .git/ .bzr/
How to truncate a file?
Answer:
Assume you have a file named "test.txt", now you want to truncate (remove the content) of the file, you can use:
> test.txt
That's all.
How to combine the output of multiple commands into a single file?
Answer:
You can combine multiple commands by a brackets, and do the file redirection.
E.g.
# (echo "A"; echo "B"; echo "C") > output.txt
