SVC(1) General Commands Manual SVC(1)NAME
svc, ci, co, svclog - shell version control system
SYNOPSIS
ci [-lu] file
co [-l] [-r rev] file
svclog file
OPTIONS -l For ci, checkin, checkout again, and lock file
-l For co, checkout file and then lock the archive
-u After checking in, do not delete the file
-r Check out revision rev instead most recent revision
EXAMPLES
ci -u file # Check in file
co -l file # Check out file and lock archive
co -r 2 file # Check out version 2
DESCRIPTION
Svc is the Shell Version Control system, patterned on RCS. It maintains a sequence of versions in archive files, so that new versions can
be checked in (added to the archive), and old versions can be checked out (made available). To create an archive for file, check it in
with the -u flag. This action will prompt for a log message and then create an archive called file,S in the current directory, or in the
subdirectory SVC if it exists. The file will not be deleted, but will be made unwritable.
To update the file, check it out with the -l flag. Then modify it, and check it back in, giving a new message when prompted. After this
process has been repeated many times, the archive will contain the entire history. Any version can be checked out using the -r flag. To
get a printout of the history, use svclog.
SVC(1)
Check Out this Related Man Page
elf_rand(3E)elf_rand(3E)NAME
elf_rand - random archive member access
SYNOPSIS
[flag... ] file... [library] ...
DESCRIPTION
and manipulate simple object files and archives. elf is an ELF descriptor previously returned from
provides random archive processing, preparing elf to access an arbitrary archive member. elf must be a descriptor for the archive itself,
not a member within the archive. offset gives the byte offset from the beginning of the archive to the archive header of the desired mem-
ber. See elf_getarsym(3E) for more information about archive member offsets. When works, it returns offset. Otherwise it returns 0,
because an error occurred, elf was null, or the file was not an archive (no archive member can have a zero offset). A program may mix ran-
dom and sequential archive processing.
EXAMPLES
An archive starts with a ``magic string'' that has bytes; the initial archive member follows immediately. An application could thus pro-
vide the following function to rewind an archive (the function returns -1 for errors and 0 otherwise).
#include <ar.h>
#include <libelf.h>
int
rewindelf(Elf *elf)
{
if (elf_rand(elf, (size_t)SARMAG) == SARMAG)
return 0;
return -1;
}
SEE ALSO ar(4), elf(3E), elf_begin(3E), elf_getarsym(3E), elf_next(3E).
elf_rand(3E)
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