DEJA-DUP(1) User Commands DEJA-DUP(1)NAME
deja-dup - manual page for deja-dup 20.2
SYNOPSIS
deja-dup [OPTION...]
deja-dup --backup
deja-dup --restore [FILES?]
deja-dup --restore-missing DIRECTORY
DESCRIPTION
D?j? Dup is a simple backup tool. It hides the complexity of backing up the Right Way (encrypted, off-site, and regular) and uses duplic-
ity as the backend.
OPTIONS -h, --help
Show help options
--help-all
Show all help options
--help-gtk
Show GTK+ Options
--version
Show version
--restore
Restore given files
--backup
Immediately start a backup
--restore-missing
Restore deleted files
--display=DISPLAY
X display to use
SEE ALSO duplicity(1)deja-dup 20.2 June 2012 DEJA-DUP(1)
Check Out this Related Man Page
DUP(2) Linux Programmer's Manual DUP(2)NAME
dup, dup2 - duplicate a file descriptor
SYNOPSIS
#include <unistd.h>
int dup(int oldfd);
int dup2(int oldfd, int newfd);
DESCRIPTION
dup and dup2 create a copy of the file descriptor oldfd.
After successful return of dup or dup2, the old and new descriptors may be used interchangeably. They share locks, file position pointers
and flags; for example, if the file position is modified by using lseek on one of the descriptors, the position is also changed for the
other.
The two descriptors do not share the close-on-exec flag, however.
dup uses the lowest-numbered unused descriptor for the new descriptor.
dup2 makes newfd be the copy of oldfd, closing newfd first if necessary.
RETURN VALUE
dup and dup2 return the new descriptor, or -1 if an error occurred (in which case, errno is set appropriately).
ERRORS
EBADF oldfd isn't an open file descriptor, or newfd is out of the allowed range for file descriptors.
EMFILE The process already has the maximum number of file descriptors open and tried to open a new one.
WARNING
The error returned by dup2 is different to that returned by fcntl(..., F_DUPFD, ...) when newfd is out of range. On some systems dup2 also
sometimes returns EINVAL like F_DUPFD.
CONFORMING TO
SVr4, SVID, POSIX, X/OPEN, BSD 4.3. SVr4 documents additional EINTR and ENOLINK error conditions. POSIX.1 adds EINTR.
SEE ALSO fcntl(2), open(2), close(2)Linux 1.1.46 1994-08-21 DUP(2)