Add Bash libs collect.sh (pt-collect internals), safeguards.sh, and alt_cmds.sh.

lib/bash/alt_cmds.sh

@@ -0,0 +1,34 @@
+# This program is copyright 2011 Percona Inc.
+# Feedback and improvements are welcome.
+#
+# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation, version 2; OR the Perl Artistic License.  On UNIX and similar
+# systems, you can issue `man perlgpl' or `man perlartistic' to read these
+# licenses.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+# Place, Suite 330, Boston, MA  02111-1307  USA.
+# ###########################################################################
+# alt_cmds package
+# ###########################################################################
+
+# Package: alt_cmds
+# alt_cmds provides alternatives to commands that aren't on all systems.
+
+set -u
+
+# seq N, return 1, ..., 5
+_seq() {
+   local i=$1
+   awk "BEGIN { for(i=1; i<=$i; i++) print i; }"
+}
+
+# ###########################################################################
+# End alt_cmds package
+# ###########################################################################