83 lines
2.1 KiB
Perl
83 lines
2.1 KiB
Perl
#!/usr/bin/perl
|
|
'di';
|
|
'ig00';
|
|
#
|
|
# $RCSfile: relink,v $$Revision: 4.1 $$Date: 92/08/07 17:20:29 $
|
|
#
|
|
# $Log: relink,v $
|
|
|
|
($op = shift) || die "Usage: relink perlexpr [filenames]\n";
|
|
if (!@ARGV) {
|
|
@ARGV = <STDIN>;
|
|
chop(@ARGV);
|
|
}
|
|
for (@ARGV) {
|
|
next unless -l; # symbolic link?
|
|
$name = $_;
|
|
$_ = readlink($_);
|
|
$was = $_;
|
|
eval $op;
|
|
die $@ if $@;
|
|
if ($was ne $_) {
|
|
unlink($name);
|
|
symlink($_, $name);
|
|
}
|
|
}
|
|
##############################################################################
|
|
|
|
# These next few lines are legal in both Perl and nroff.
|
|
|
|
.00; # finish .ig
|
|
|
|
'di \" finish diversion--previous line must be blank
|
|
.nr nl 0-1 \" fake up transition to first page again
|
|
.nr % 0 \" start at page 1
|
|
';<<'.ex'; #__END__ ############# From here on it's a standard manual page ############
|
|
.TH RELINK 1 "July 30, 1990"
|
|
.AT 3
|
|
.SH LINK
|
|
relink \- relinks multiple symbolic links
|
|
.SH SYNOPSIS
|
|
.B relink perlexpr [symlinknames]
|
|
.SH DESCRIPTION
|
|
.I Relink
|
|
relinks the symbolic links given according to the rule specified as the
|
|
first argument.
|
|
The argument is a Perl expression which is expected to modify the $_
|
|
string in Perl for at least some of the names specified.
|
|
For each symbolic link named on the command line, the Perl expression
|
|
will be executed on the contents of the symbolic link with that name.
|
|
If a given symbolic link's contents is not modified by the expression,
|
|
it will not be changed.
|
|
If a name given on the command line is not a symbolic link, it will be ignored.
|
|
If no names are given on the command line, names will be read
|
|
via standard input.
|
|
.PP
|
|
For example, to relink all symbolic links in the current directory
|
|
pointing to somewhere in X11R3 so that they point to X11R4, you might say
|
|
.nf
|
|
|
|
relink 's/X11R3/X11R4/' *
|
|
|
|
.fi
|
|
To change all occurences of links in the system from /usr/spool to /var/spool,
|
|
you'd say
|
|
.nf
|
|
|
|
find / -type l -print | relink 's#/usr/spool#/var/spool#'
|
|
|
|
.fi
|
|
.SH ENVIRONMENT
|
|
No environment variables are used.
|
|
.SH FILES
|
|
.SH AUTHOR
|
|
Larry Wall
|
|
.SH "SEE ALSO"
|
|
ln(1)
|
|
.br
|
|
perl(1)
|
|
.SH DIAGNOSTICS
|
|
If you give an invalid Perl expression you'll get a syntax error.
|
|
.SH BUGS
|
|
.ex
|