sleep command using command is not displayed in ps
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I'm running the sleep command in terminal using screen and in detached mode.
Once the screen immediately returns, I'm running ps command to verify the sleep is running.
$ screen -d -m 'sleep 2m'
[raj@localhost ~]$ ps
PID TTY TIME CMD
22795 pts/0 00:00:00 bash
22869 pts/0 00:00:00 ps
But the command didn't show sleep. What is that I'm doing wrong here?
scripting gnu-screen ps
edited 1 hour ago
fra-san
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
add a comment |
I'm running the sleep command in terminal using screen and in detached mode.
Once the screen immediately returns, I'm running ps command to verify the sleep is running.
$ screen -d -m 'sleep 2m'
[raj@localhost ~]$ ps
PID TTY TIME CMD
22795 pts/0 00:00:00 bash
22869 pts/0 00:00:00 ps
But the command didn't show sleep. What is that I'm doing wrong here?
scripting gnu-screen ps
edited 1 hour ago
fra-san
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
why would you want to runsleepthrough a detachedscreen? couldn’t you just run it assleep 2m &directly from your shell ? besides,psalone shows only processes belonging to your terminal window, while whatever you run throughscreenwill belong to a different virtual terminal
– LL3
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried usingps -a | grep sleepstill it is not showing any new process running sleep.
– Rajkumar Natarajan
1 hour ago
add a comment |
I'm running the sleep command in terminal using screen and in detached mode.
Once the screen immediately returns, I'm running ps command to verify the sleep is running.
$ screen -d -m 'sleep 2m'
[raj@localhost ~]$ ps
PID TTY TIME CMD
22795 pts/0 00:00:00 bash
22869 pts/0 00:00:00 ps
But the command didn't show sleep. What is that I'm doing wrong here?
scripting gnu-screen ps
edited 1 hour ago
fra-san
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
I'm running the sleep command in terminal using screen and in detached mode.
Once the screen immediately returns, I'm running ps command to verify the sleep is running.
$ screen -d -m 'sleep 2m'
[raj@localhost ~]$ ps
PID TTY TIME CMD
22795 pts/0 00:00:00 bash
22869 pts/0 00:00:00 ps
But the command didn't show sleep. What is that I'm doing wrong here?
scripting gnu-screen ps
scripting gnu-screen ps
edited 1 hour ago
fra-san
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
edited 1 hour ago
fra-san
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
edited 1 hour ago
fra-san
2,0271721
edited 1 hour ago
fra-san
2,0271721
edited 1 hour ago
fra-san
2,0271721
2,0271721
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
asked 2 hours ago
Rajkumar NatarajanRajkumar Natarajan
1347
1347
why would you want to runsleepthrough a detachedscreen? couldn’t you just run it assleep 2m &directly from your shell ? besides,psalone shows only processes belonging to your terminal window, while whatever you run throughscreenwill belong to a different virtual terminal
– LL3
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried usingps -a | grep sleepstill it is not showing any new process running sleep.
– Rajkumar Natarajan
1 hour ago
add a comment |
why would you want to runsleepthrough a detachedscreen? couldn’t you just run it assleep 2m &directly from your shell ? besides,psalone shows only processes belonging to your terminal window, while whatever you run throughscreenwill belong to a different virtual terminal
– LL3
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried usingps -a | grep sleepstill it is not showing any new process running sleep.
– Rajkumar Natarajan
1 hour ago
why would you want to run
sleep through a detached screen ? couldn’t you just run it as sleep 2m & directly from your shell ? besides, ps alone shows only processes belonging to your terminal window, while whatever you run through screen will belong to a different virtual terminal– LL3
1 hour ago
why would you want to run
sleep through a detached screen ? couldn’t you just run it as sleep 2m & directly from your shell ? besides, ps alone shows only processes belonging to your terminal window, while whatever you run through screen will belong to a different virtual terminal– LL3
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried using
ps -a | grep sleep still it is not showing any new process running sleep.– Rajkumar Natarajan
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried using
ps -a | grep sleep still it is not showing any new process running sleep.– Rajkumar Natarajan
1 hour ago
add a comment |
1 Answer
1
active
oldest
votes
screen expected the command in the first argument; what you gave as that first argument was: 'sleep 2m', so it tried to execute a command named (exactly) 'sleep 2m', as opposed to what you really wanted, which was sleep with an argument of 2m. The screen command exited successfully, but it did not successfully execute your command.
Use, instead:
screen -d -m sleep 2m
Instead of ps, which will only show processes associated with the current terminal (of which the SCREEN and related processes are not), use:
ps x
which will show it:
$ ps x
PID TTY STAT TIME COMMAND
# ...
7514 pts/1 Ss 0:00 -bash
7761 ? Ss 0:00 SCREEN -d -m sleep 2m
7762 pts/2 Ss+ 0:00 sleep 2m
7880 pts/1 R+ 0:00 ps x
# ...
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
screen expected the command in the first argument; what you gave as that first argument was: 'sleep 2m', so it tried to execute a command named (exactly) 'sleep 2m', as opposed to what you really wanted, which was sleep with an argument of 2m. The screen command exited successfully, but it did not successfully execute your command.
Use, instead:
screen -d -m sleep 2m
Instead of ps, which will only show processes associated with the current terminal (of which the SCREEN and related processes are not), use:
ps x
which will show it:
$ ps x
PID TTY STAT TIME COMMAND
# ...
7514 pts/1 Ss 0:00 -bash
7761 ? Ss 0:00 SCREEN -d -m sleep 2m
7762 pts/2 Ss+ 0:00 sleep 2m
7880 pts/1 R+ 0:00 ps x
# ...
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
add a comment |
screen expected the command in the first argument; what you gave as that first argument was: 'sleep 2m', so it tried to execute a command named (exactly) 'sleep 2m', as opposed to what you really wanted, which was sleep with an argument of 2m. The screen command exited successfully, but it did not successfully execute your command.
Use, instead:
screen -d -m sleep 2m
Instead of ps, which will only show processes associated with the current terminal (of which the SCREEN and related processes are not), use:
ps x
which will show it:
$ ps x
PID TTY STAT TIME COMMAND
# ...
7514 pts/1 Ss 0:00 -bash
7761 ? Ss 0:00 SCREEN -d -m sleep 2m
7762 pts/2 Ss+ 0:00 sleep 2m
7880 pts/1 R+ 0:00 ps x
# ...
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
add a comment |
screen expected the command in the first argument; what you gave as that first argument was: 'sleep 2m', so it tried to execute a command named (exactly) 'sleep 2m', as opposed to what you really wanted, which was sleep with an argument of 2m. The screen command exited successfully, but it did not successfully execute your command.
Use, instead:
screen -d -m sleep 2m
Instead of ps, which will only show processes associated with the current terminal (of which the SCREEN and related processes are not), use:
ps x
which will show it:
$ ps x
PID TTY STAT TIME COMMAND
# ...
7514 pts/1 Ss 0:00 -bash
7761 ? Ss 0:00 SCREEN -d -m sleep 2m
7762 pts/2 Ss+ 0:00 sleep 2m
7880 pts/1 R+ 0:00 ps x
# ...
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
screen expected the command in the first argument; what you gave as that first argument was: 'sleep 2m', so it tried to execute a command named (exactly) 'sleep 2m', as opposed to what you really wanted, which was sleep with an argument of 2m. The screen command exited successfully, but it did not successfully execute your command.
Use, instead:
screen -d -m sleep 2m
Instead of ps, which will only show processes associated with the current terminal (of which the SCREEN and related processes are not), use:
ps x
which will show it:
$ ps x
PID TTY STAT TIME COMMAND
# ...
7514 pts/1 Ss 0:00 -bash
7761 ? Ss 0:00 SCREEN -d -m sleep 2m
7762 pts/2 Ss+ 0:00 sleep 2m
7880 pts/1 R+ 0:00 ps x
# ...
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
answered 1 hour ago
Jeff Schaller♦Jeff Schaller
44.8k1163145
44.8k1163145
add a comment |
add a comment |
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why would you want to run
sleepthrough a detachedscreen? couldn’t you just run it assleep 2m &directly from your shell ? besides,psalone shows only processes belonging to your terminal window, while whatever you run throughscreenwill belong to a different virtual terminal– LL3
1 hour ago
@LL3 - I'm doing it as a poc to run a command from remote machine using screen and detach from screen. I have tried using
ps -a | grep sleepstill it is not showing any new process running sleep.– Rajkumar Natarajan
1 hour ago