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0
votes
1answer
120 views

How to record only the header info when using `tcpdump`

When running the following command tcpdump -i deviceName 'host 1.2.3.4' -q -w /mypath/dump.pcap the dump file contains a huge amount of data because there's a lot of traffic. However, I only need ...
0
votes
1answer
83 views

Print the output of an interactive command in a shell script

I am writing a CGI script to monitor the system state, so the information must be outputted to the terminal with echo or cat. The problem is, systat is an interactive command, so it doesn't print ...
1
vote
1answer
285 views

Will these commands return the same output on different Linux distributions? [closed]

I am writing a monitoring script. I am running it on a specific machine, and it works. It is planned to be ran on several Linux machines, not bound to a single distribution. Here are the commands and ...
21
votes
4answers
21k views

Monitor hard disk activity [duplicate]

In a Ubuntu 14.04 server I am experiencing a massive hard disk activity which has no apparent justification: it comes as a burst, it lasts a few minutes and then disappears. It consumes system ...
3
votes
1answer
1k views

Is it possible to track bash commands in real time?

I'd like to know if I can track commands entered by user in a bash shell, in real time. What I'm trying to do is something similar to thefuck, but I need to prompt the user as and when he enters new ...
3
votes
0answers
767 views

Program like vnStat that filters for only external (Internet) traffic

I've been using vnStat to monitor the ethernet interface on a Linux computer, but found that it includes all local traffic. I do many file transfers from within the subnet which far exceeds the ...
0
votes
1answer
630 views

How can I see the rate of my wireless card?

I am setting manually the bit-rate of my wireless card ! sudo iwconfig wlan0 rate 54M Where can I see if it is applied, because the command does not give any feedback !!!
2
votes
2answers
4k views

IBM V7000 scripts for monitoring

Hello (I'm no hard core coder:), I try to develop a script to do some very basic monitoring on an IBM SVC. My goal is to get some information about the nodes and my quroum status and then send ...
3
votes
2answers
822 views

Bandwidth monitoring in Linux

I just need to get how much bandwidth is used in 3 or 4 days. Do you have any application in the terminal to do it? I'd prefer if it didn't use SNMP. I found iptraf, wireshark, cacti, but they were ...
5
votes
1answer
2k views

Live program output monitoring tool

I would like to know if there is a tool that would enable you to watch how the program output changes live. Something like tail -f but instead of monitoring the file changes, it would repeatedly call ...
57
votes
3answers
97k views

How does the “tail” command's “-f” parameter work?

$ tail -f testfile the command is supposed to show the latest entries in the specified file, in real-time right? But that's not happening. Please correct me, if what I intend it to do is wrong... I ...
4
votes
2answers
559 views

Relaunch application once finished

Is there a command that relaunch the application once it finishes from the command line? Letting you do something like: > relaunch python myapp.py If not, then what's my best option? I know I ...