When crontab tries to execute the script:
@reboot sh /home/username/unicorn_start.sh > /home/username/unicorn_start.out 2>&1It creates me a log file with the following content: /usr/bin/env: ‘ruby’: No such file or directory.
This is what I have in unicorn_start.sh:
#!/bin/bash
PATH="$PATH:/usr/local/rvm/gems/ruby-1.9.2-p180/bin"
/etc/init.d/unicorn_myapp startIf I execute unicorn_myapp or unicorn_start.sh manually, everything works fine. As I understand, I need to add an additional path to $PATH variable. What is the way of doing it? Thanks ahead.
EDIT:
unicorn_init.sh:
#!/bin/sh
### BEGIN INIT INFO
# Provides: unicorn
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Manage unicorn server
# Description: Start, stop, restart unicorn server for a specific application.
### END INIT INFO
set -e
# Feel free to change any of the following variables for your app:
TIMEOUT=${TIMEOUT-60}
APP_ROOT=/home/username/appname
PID=$APP_ROOT/tmp/pids/unicorn.pid
CMD="cd $APP_ROOT; bundle exec unicorn -D -c $APP_ROOT/config/unicorn.rb -E production"
AS_USER=root
set -u
OLD_PIN="$PID.oldbin"
sig () { test -s "$PID" && kill -$1 `cat $PID`
}
oldsig () { test -s $OLD_PIN && kill -$1 `cat $OLD_PIN`
}
run () { if [ "$(id -un)" = "$AS_USER" ]; then eval $1 else su -c "$1" - $AS_USER fi
}
case "$1" in
start) sig 0 && echo >&2 "Already running" && exit 0 run "$CMD" ;;
stop) sig QUIT && exit 0 echo >&2 "Not running" ;;
force-stop) sig TERM && exit 0 echo >&2 "Not running" ;;
restart|reload) sig HUP && echo reloaded OK && exit 0 echo >&2 "Couldn't reload, starting '$CMD' instead" run "$CMD" ;;
upgrade) if sig USR2 && sleep 2 && sig 0 && oldsig QUIT then n=$TIMEOUT while test -s $OLD_PIN && test $n -ge 0 do printf '.' && sleep 1 && n=$(( $n - 1 )) done echo if test $n -lt 0 && test -s $OLD_PIN then echo >&2 "$OLD_PIN still exists after $TIMEOUT seconds" exit 1 fi exit 0 fi echo >&2 "Couldn't upgrade, starting '$CMD' instead" run "$CMD" ;;
reopen-logs) sig USR1 ;;
*) echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop|reopen-logs>" exit 1 ;;
esac3 Answers
The default PATH crontab is using is "only" /usr/bin:/bin, however you can adjust it.
Instead of writing the things in that script try adding it directly into the crontab command:
@reboot PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/rvm/gems/ruby-1.9.2-p180/bin"; /etc/init.d/unicorn_myapp start > /home/username/unicorn_start.out 2>&1You can also add the path variable above every cronjob so it's applicable to every task you put in there:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/rvm/gems/ruby-1.9.2-p180/bin" # # * * * * * myjob.sh @reboot /home/username/unicorn_start.sh > /home/username/unicorn_start.out 2>&1If you use the which command you should be able to see where your ruby executable is located e.g
which ruby
/usr/bin/rubyThe you could add that path to the $PATH variable to straight to the crontab (not sure what best practice may dictate but has worked for me in the past)
I faced same issue with following details
Ruby was installed on system
which ruby returned /usr/local/bin/ruby but if is try to run any script from cron it was throwing error /usr/bin/env: ‘ruby’: No such file or directory
A little investigation revealed that env was trying to load ruby binary form /usr/bin/ruby even though /usr/local/bin/ was in the $PATH env variable. So i created a soft link.
ln -s /usr/local/bin/ruby /usr/bin/rubyNow scripts can work from cron as well.
