mirror of
https://github.com/percona/percona-toolkit.git
synced 2026-03-02 02:05:24 +08:00
5402b92110
- Updated reference of legacy FSF address with currently recommended way to get actual copy of GPL 2. - Replaced "Percona Ireland Ltd." and other old Percona names with "Percona LLC and/or it affiliates" - Updated copyright year for these outdated entries
78 lines
2.7 KiB
Bash
78 lines
2.7 KiB
Bash
# This program is copyright 2011-2026 Percona LLC and/or its affiliates.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License, version 2
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# along with this program; if not, see <https://www.gnu.org/licenses/>.
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# ###########################################################################
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# alt_cmds package
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# ###########################################################################
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# Package: alt_cmds
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# alt_cmds provides alternatives to commands that aren't on all systems.
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set -u
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# seq N, return 1, ..., 5
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_seq() {
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local i="$1"
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awk "BEGIN { for(i=1; i<=$i; i++) print i; }"
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}
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_pidof() {
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local cmd="$1"
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if ! pidof "$cmd" 2>/dev/null; then
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ps -eo pid,ucomm | awk -v comm="$cmd" '$2 == comm { print $1 }'
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fi
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}
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_lsof() {
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local pid="$1"
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if ! lsof -p $pid 2>/dev/null; then
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/bin/ls -l /proc/$pid/fd 2>/dev/null
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fi
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}
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# We don't get things like "which: command not found", so for the pathological
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# case where /usr/bin/which isn't installed, we check that "which which" and
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# if which really isn't there then just return the command passed in and hope
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# they are somewhere
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# TODO:
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# we just need to redirect STDERR when we execute
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# "which" and check it. Some shells are really weird this way. We
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# can't check "which"'s exit status because it will be nonzero if
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# the sought-for command doesn't exist.
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#
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_which() {
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# which on CentOS is aliased to a cmd that prints extra stuff.
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# Also, if the cmd isn't found, a msg is printed to stderr.
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if [ -x /usr/bin/which ]; then
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/usr/bin/which "$1" 2>/dev/null | awk '{print $1}'
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elif which which 1>/dev/null 2>&1; then
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# Well, this is bizarre. /usr/bin/which either doesn't exist or
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# isn't executable, but the shell can use which just fine.
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# So we bite the bullet, hope that it doesn't do anything
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# insane, and use it.
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which "$1" 2>/dev/null | awk '{print $1}'
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else
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# We don't have which. Just return the command that was
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# originally passed in.
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echo "$1"
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fi
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}
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# ###########################################################################
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# End alt_cmds package
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# ###########################################################################
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