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move improvements #4

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move improvements #4

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e6583ec
add Makefile
Sep 9, 2016
9ddcb50
Add detach option
Sep 9, 2016
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19 changes: 19 additions & 0 deletions Makefile
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
PREFIX?=/usr/local
DESTDIR?=
INSTALL?=install

SCRIPTS = "kreboot"

.PHONY: all
all:
@echo "Nothing to build, it is all bash :)"
@echo "Try make install"

.PHONY: install
install:
$(INSTALL) -d $(DESTDIR)$(PREFIX)/bin/
$(INSTALL) -m 755 $(SCRIPTS) $(DESTDIR)$(PREFIX)/bin

.PHONY: uninstall
uninstall:
./uninstall $(DESTDIR)$(PREFIX)/bin/ $(SCRIPTS)
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@avagin avagin Sep 12, 2016

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Where is "./uninstall"? Do you forget to add it?

22 changes: 21 additions & 1 deletion kreboot
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Expand Up @@ -6,13 +6,15 @@ set -u

# defaults
wait=10
detach_wait=3

usage() {
cat << EOF
Usage: kreboot [option ...] [kernel|boot-index]
Options are:
--wait, -w N wait N seconds before reboot (default $wait)
--nowait don't wait, reboot immediately
--detach Schedule reboot and return. Suitable to remote reboot.
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@avagin avagin Sep 12, 2016

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mix of spaces and tabs

--help, -h show this help message

Example:
Expand Down Expand Up @@ -48,6 +50,19 @@ while test $# -gt 0; do
--nowait)
wait=0
;;
--detach)
detach=yes
;;
--detach_wait)
if [ "$#" -lt 2 ]; then
uerr "Option $1 requires an argument"
fi
detach_wait=$2
if ! printf "%f" $detach_wait > /dev/null 2>&1; then
uerr "Option $1 argument not a number"
fi
shift
;;
-h|--help)
usage 0
;;
Expand Down Expand Up @@ -85,4 +100,9 @@ if [ "$wait" -ne 0 ]; then
sleep $wait
fi
kexec -l "$kernel" --initrd="$initrd" --command-line="root=$root $args"
systemctl kexec

if [ -z "detach" ]; then
systemctl kexec
else
setsid bash -c "sleep $detach_wait; systemctl kexec" &>/dev/null < /dev/null &
fi