I'm pretty new to unix, while I'm learning a lot I'm finding bash scripting quite confusing. Im sure it's not really, my head just hasn't clicked with it.
Anyway, I need a script to loop the ip addresses stored in a file and run a "pgrep <process>" and return the pid or some indicator that there wasn't one:
Could some kind person please post me a script to do this and explain what's going on?
Many thanks.
------ Post updated at 10:30 AM ------
I should add, I do have ssh keys sent everywhere so passwords aren't a problem. )
Moderator's Comments:
Changed rsh to ssh in thread title to avoid confusion
Last edited by Scrutinizer; 10-11-2018 at 09:12 AM..
good day. i jsut wanted to know what is the best script or the best way changing a lot of Ip's in all servers. Do you have any idea? im using awk to change IP,what if, you have lots of servers. You need to change it one by one? It will take time to change it manually. (2 Replies)
Hi All,
Okay, I need help.
I need to ssh in to multiple linux servers execute certain commands and get them to email and print on the screen when the script is being executed.
So below is my script. Its not working :-(.
#!/bin/bash
#linux/UNIX box with ssh key based login... (7 Replies)
Requirement:
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checksum
path
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Hi
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#/bin/bash
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Discussion started by: venkat918
2 Replies
LEARN ABOUT NETBSD
screenblank
SCREENBLANK(1) BSD General Commands Manual SCREENBLANK(1)NAME
screenblank -- screen saver daemon for wscons and FBIO machines
SYNOPSIS
screenblank [-k | -m] [-d inactivity-timeout] [-e wakeup-delay] [-f framebuffer] [-i input-device]
screenblank {-b | -u}
DESCRIPTION
screenblank disables the framebuffer if the keyboard and mouse are idle for a period of time, and re-enables the framebuffer when keyboard or
mouse activity resumes.
When killed with a SIGINT, SIGHUP, or SIGTERM, screenblank will re-enable the framebuffer. The pid can be found in the file
/var/run/screenblank.pid.
The options are as follows:
-b Overriding the other options, simply try (once) to blank the framebuffer, then exit.
-d inactivity-timeout
Wait the number of seconds specified by inactivity-timeout, expressed in the format ``xxx.xxx'', before disabling the framebuffer due
to inactivity. The default is 600 seconds (10 minutes).
-e wakeup-delay
Wait the number of seconds specified by wakeup-delay, expressed in the format ``xxx.xxx'', before re-enabling the framebuffer once
activity resumes. The default is .25 seconds.
-f framebuffer
Use the framebuffer device framebuffer instead of the default /dev/fb.
-i input-device
Add input-device to the list of devices to monitor for activity.
-k Do not check the keyboard for activity.
-m Do not check the mouse for activity.
-u Overriding the other options, simply try (once) to unblank the framebuffer, then exit.
Note that the -k and -m flags are mutually exclusive.
FILES
/dev/kbd The keyboard device.
/dev/mouse The mouse device.
/dev/console The console device.
/dev/fb The default framebuffer.
/dev/wskbd The keyboard for wscons machines.
/dev/wsmouse The mouse device for wscons machines.
/dev/ttyE0 The console device for wscons machines.
/var/run/screenblank.pid File containing the pid of screenblank.
BSD September 23, 2006 BSD