Hi I've been searching on the forum but I cant seem to get this right. I am trying to create a script that asks the user which process they are searching for then returns with a 1 if the process is running.
This works:
#!/bin/bash
SERVICE='httpd'
if ps ax | grep -v grep | grep $SERVICE > /dev/null
then
echo "$SERVICE service running, everything is fine"
else
echo "$SERVICE is not running"
fi
I want to add this to the script:
echo -e "please enter process name: \c"
read word
for something like:
#!/bin/sh
echo -e "please enter process name: \c"
read input_variable
if ps ax | grep -v grep | grep $varname > /dev/null
then
echo "$SERVICE service running, everything is fine"
else
echo "$SERVICE is not running"
fi
Use pgrep to search for processes:
read process_name
if pgrep "${process_name}" >/dev/null 2>&1 ; then
"echo ${process_name} found"
else
"echo ${process_name} not found"
fi
Related
Need to execute on MacOS.
Most of the solution is giving status running or stopped but for Not Responding state not having any solution.
tried solutions like this
pgrep "$1" 2>&1 > /dev/null
echo $?
if [ $? -eq 0 ]
then
{
echo " "$1" PROCESS RUNNING "
ps -ef | grep $1 | grep -v grep | awk '{print $2}'| xargs kill -9
}
else
{
echo " NO $1 PROCESS RUNNING"
};fi
I have a bash script like this:
#!/bin/bash
log_file=/home/michael/bash/test.log
checkalive=checkalive.php
#declare
needRestart=0
#Check checkalive.php
is_checkalive=`ps aux | grep -v grep| grep -v "$0" | grep $checkalive| wc -l | awk '{print $1}'`
if [ $is_checkalive != "0" ] ;
then
checkaliveId=$(ps -ef | grep $checkalive | grep -v 'grep' | awk '{ printf $2 }')
echo "Service $checkalive is running. $checkaliveId"
else
echo "$checkalive OFF"
needRestart=1
fi
#NEED needRestart
if [ $needRestart == "1" ];
then
#START SERVICE
echo "Restarting services..."
/usr/bin/php5.6 /home/michael/bash/$checkalive >/dev/null 2>&1 &
echo "$checkalive..."
echo `date '+%Y-%m-%d %H:%M:%S'` " Start /home/michael/bash/$checkalive" >> $log_file
fi
I can run it manually but when I try to run it in Cron, it doesn't work for some reasons. Apparently the command:
/usr/bin/php5.6 /home/michael/bash/$checkalive >/dev/null 2>&1 &
does not work.
All of file permissions are already set to executable. Any advice?
Thank you
You have run into one of cron's most common mistakes, trying to use it like an arbitrary shell script. Cron is not a shell script and you can't do everything you can do in one, like dereferencing variables or setting arbitrary new variables.
I suggest you replace your values into the cron line and avoid usage of variables
/usr/bin/php5.6 /home/michael/bash/checkalive.php >/dev/null 2>&1 &
Also, consider removing the trailing & as it is not necessary.
how can i check if a process is running, if it is running then echo "process is running" and keep them from using that process til its finished. i have this piece of code but i cant get it to not allow them to use that process after it echos:
#!/bin/bash
SERVICE=EXAMPLE
if ps ax | grep -v grep | grep -v grep | grep $SERVICE > /dev/null
then
echo -e ""
echo -e "${LIGHTRED}[!] ${WHITE}Please wait till process is finished."
fi
It seems you want to write a loop, not a single if statement.
And you probably want to sleep a bit between checking the condition.
#!/bin/bash
SERVICE=EXAMPLE
while ps ax | grep -v grep | grep "$SERVICE" > /dev/null
do
echo
echo -e "${LIGHTRED}[!] ${WHITE}Please wait till process is finished."
sleep 60
fi
The condition can be simpler if you have pgrep:
while pgrep "$SERVICE" >/dev/null
(Or the simpler while pgrep -q "$SERVICE" if your implementation of pgrep supports it.)
When there is no matching process (already finished or not started yet),
then the script will not produce any output.
If you want to get some output in that case,
then you can rework like this:
while true
do
if pgrep "$SERVICE" > /dev/null; then
echo
echo -e "${LIGHTRED}[!] ${WHITE}Please wait till process is finished."
sleep 60
else
echo "Process '$SERVICE' not running"
break
fi
fi
To print the message only once and just wait until the process is no longer running:
is_running() {
pgrep "$SERVICE" > /dev/null
}
if is_running; then
echo -e "${LIGHTRED}[!] ${WHITE}Please wait till process is finished."
while true; do
sleep 60
is_running || break
done
else
echo "Process '$SERVICE' not running"
fi
Another solution
#!/bin/bash
tput civis # hide cursor
until ! ps -ef | grep "$SERVICE" | grep -v "grep" > /dev/null; do
while ps -ef | grep "$SERVICE" | grep -v "grep" > /dev/null; do
echo -en "\r${LIGHTRED}[!] ${WHITE}Please wait till process is finished."
done
printf "\r%80s" "" # clear line
echo -en "\rProcess '$SERVICE' is completed!\n"
done
tput cnorm # show cursor again
This solution is useful also if you have multiple instance of the service together.
how can I compare numbers in my script:
#!/bin/sh
service=myservice
if [ $(ps | grep -v grep | grep $service | wc -l) > 0 ]
then
echo "$service is running!!!"
else
echo "$service is NOT running!!!"
fi
the above is not working
Using git bash:
$ if ((9 > 2 )); then
> echo 'hello'
> fi
hello
thanks to #anubhava, I made this script
#!/bin/sh
service=myService
if pgrep "$service" > /dev/null
then
echo "$service is running!!!"
else
echo "$service is NOT running!!!"
fi
I have a issue with my Script, i am just trying to fingure out if my screen session is running or not (line 19).
The rest of the script is working.
#!/bin/bash
echo $PATH // /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
echo "0"
content=$(wget http://interwebs.com/index.php?page=count -q -O -)
z=$(($content / 5))
z=$(($z + 1))
echo $z // 4
lockfile=/var/tmp/mylock
if ( set -o noclobber; echo "$$" > "$lockfile") 2> /dev/null; then
trap 'rm -f "$lockfile"; exit $?' INT TERM EXIT
# do stuff here
x=1
count=0
while [ $x -le $z ]
do
$req ="$(ps -ef | grep -i mystatus$count | grep -v grep)"
if [ "$req" = "" ]; then
# run bash script
screen -amds mystatus$count /usr/bin/wget --spider interwebs.com/index.php?page=cronwhatsoever$(( $count +1))-$(( $count +5))
else
echo "Cron running"
fi
x=$(( $x + 1 ))
count=$(( $count +5))
done
# clean up after yourself, and release your trap
rm -f "$lockfile"
trap - INT TERM EXIT
else
echo "Lock Exists: $lockfile owned by $(cat $lockfile)"
fi
sleep 15
It returns line 19: =: command not found. Actually running:
ps -ef | grep -i bukkit | grep -v grep
Works without issues if i run it directly in my Terminal, so any idea how to solve this issue?
I guess it something PATH related but grep is located in /bin/grep.
$req ="$(ps -ef | grep -i mystatus$count | grep -v grep)"
should be
req="$(ps -ef | grep -i mystatus$count | grep -v grep)"
Don't use $ on the left-hand side of an assignment, and you must not have spaces around the =