`time` is a command line utility for running another program and summarizing resource usage

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1answer
313 views

How to do an automated measurement for the boot time for freshly build images?

I want to generate images for an embedded system and automatically measure the time they took for booting (especially for different systems). I'm using Buildroot to generate my Linux Images. I ...
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0answers
83 views

Changing file time using touch

Im trying to change the file time of a m#merge the files to a temporary file. mergecap -w "${dir_dcn}"/merge_dcn.pcap "${FILES_dcn[@]}" touch -r "${FILES_dcn[14]}" dcn_file ls -l dcn_file ...
3
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2answers
240 views

Time running a Ruby script is different locally than over SSH

Has anyone else seen this behavior? I created a simple Ruby script for giggles to see how fast it would count up on a couple machines I have. Here's the source: for n in 1...1000000 do ...
2
votes
1answer
70 views

Is it possible to use the at command to schedule a job to run at a given timestamp?

I want to schedule a file to run using the at command, as described in this tutorial. I see that the at command supports the posix format -- but I don't see any mention of timestamps. Surely it is ...
11
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2answers
2k views

How can I redirect `time` output and command output to the same pipe?

Suppose I have a binary called foo. If I want to redirect the output of foo to some other process bar, I could write ./foo | bar. On the other hand, if I wanted to time foo, and redirect the output ...
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2answers
126 views

Is there a way to add some info about time/date to TTY prompt?

If you have a graphical display manager, you can notice date and time there, but I haven't seen such a thing when it comes to TTY. If I want to check the current time (or date) I have to log in. It's ...
0
votes
1answer
229 views

LXPanel time is wrong?

I just upgraded from Lubuntu 12.10 to 13.10, and it was a nightmare. When I logged in I had nothing but a background, no tray or anything. I finally just got the tray back, but it displays the wrong ...
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2answers
366 views

comparing user given time for log file time

Apologies straight away for bad-styled-question-and-heading.....learning unix and its command these days, m trying to figure out a solution for below scenario : Lets say i have a log file which ...
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3answers
1k views

Korn Shell: Show elapsed time in a specific format

In a log file, I need to print the Elapsed time, in the following format: "Process completed %s - Elapsed %s", <time now in HH:MM:SS format>, <difference from start date to end date in ...
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1answer
429 views

RTC clock time sync with the Linux time on Startup

The RTC remembers its time set, and how does the linux kernel gets this time from dev/rtc and set it as the linux time. In other words on boot up - when does kernel reads the rtc and updates its linux ...
0
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1answer
76 views

How to measure rlogin time?

I need to monitor the time it takes to rlogin from one HP-UX machine to another. So I wrote this: #!/bin/sh result=`rlogin 10.10.10.1 << EOF exit EOF` result2=`{ time $result >/dev/null; } ...
11
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3answers
46k views

Timezone setting in Linux [closed]

I'm setting the timezone to GMT+6 on my Linux machine by copying the zoneinfo file to /etc/localtime, but the date command is still showing the time as UTCtime-6. Can any one explain to me this ...
5
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2answers
302 views

How to control the time that users spend on

I need a solution that allows me to control the time that each user spend on the computer, excluding idle time (some kind of parental control). I've tried timekpr, but it doesn't work on Ubuntu 13.10. ...
2
votes
1answer
532 views

How long system has been awake / running / since restart

First and foremost I want to know how long my laptop (unix, apple, OSX 10.9 mavericks) has been 'awake' (i.e. how long its been open, or since it last 'slept'). I' also be interested in how long ...
3
votes
1answer
186 views

CPU is free, yet bash script not utilizing all CPU resources

I ran a simple script to generate a large (10000000 lines) csv file with 6 fields in which some fields changed in each line/row, using a while loop. The machine had all (32) CPUs free, lot of RAM (~31 ...
7
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2answers
140 views

How can other processes affect measurements made with `time`?

If I time a process using the time command, I get output for 'real', 'user', and 'sys'. My understanding from this discussion is that 'real' is wall time, whereas 'user' and 'sys' are process time. ...
0
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2answers
244 views

Calculating CPU time of process in RHEL 5.3

For a process management,I would need to remove a process that exceeds a certain amount of CPU time, for example 1 hour.In PS command ,it has TIME parameter shows the total CPU time of a process .So ...
5
votes
2answers
148 views

How to report time and other information on all bash commands? [duplicate]

Most of the things I run in the terminal take a long time to compute and I would like to have bash output a time report at the end of every command entered into the terminal. Is there something I can ...
3
votes
1answer
772 views

Why a sleep 300 (5 minutes) can last several hours some time? [closed]

I have a MiniMac with the OSX system. My script is: while true do echo "Sleep 300 seconds = 5 minutes" date sleep 300 echo "end of sleep" date done I want it to repeat every 5 minutes; ...
2
votes
2answers
111 views

How come Debian has no time(1) manpage?

Searching for manpage for time command does not yield any result (search form). As a sidenote, it appears to be a BASH built-in command since dpkg --search bin/time cannot find it. Perhaps such ...
3
votes
2answers
985 views

Setting time through GPS dongle

There is this code that claims to set the time of your linux environment, http://blog.petrilopia.net/linux/raspberry-pi-set-time-gps-dongle/ date -s '01/01/2014 00:01' sleep 1 pkill ntpd pkill gpsd ...
4
votes
1answer
273 views

Execution time and resources after processes that has been running for so long

This might be a basic question, but I am getting hard time finding an answer to it. I am using RHEL6. After running any process that takes significant cpu time, I get a line that tells (I guess) the ...
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2answers
2k views

Sleep until next occurrence of specific time

I need a series of commands or a single command that sleeps until the next occurrence of a specific time like "4:00" occurs. How would I do that? The at command or a cronjob is not a option because ...
2
votes
4answers
877 views

how to convert number to time format in shell script?

I want to cut a video into about 10 minute parts like this. ffmpeg -i video.mp4 -ss 00:00:00 -t 00:10:00 -c copy 01.mp4 ffmpeg -i video.mp4 -ss 00:10:00 -t 00:10:00 -c copy 02.mp4 ffmpeg -i video.mp4 ...
2
votes
1answer
590 views

NTP is synced properly but still doesn't update the time?

I wanted to test if ntp was working on my machine, so I set the time back 5 minutes and restarted ntp $ sudo service ntp stop $ sudo date -s "9:40 AM" # This time was 5 minutes ago $ sudo service ntp ...
7
votes
1answer
92 views

Time all executions in bash [duplicate]

Is there a way to run all commands in bash as if they were invoked with time in front? I want that I could type $ some_command and this will actually invoke $ time some_command.
12
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3answers
3k views

What is the recommended way to synchronize time using NTP?

This question has come up a number of times in a localized way, this question is meant to provide the preferred/best method for synchronizing a system's clock using NTP. The solution should handle ...
-1
votes
3answers
196 views

I need to learn how to convert regular time and date format into unix time format

I am trying to edit a URL on google locatiion history. I need to know how to enter february 15 2013 in unix time format (the 10 digit format) I'm not a computer whiz so if anyone can just give me the ...
4
votes
2answers
831 views

Memory usage command with syntax similar to the time command

What command shows the memory usage of a program, i am looking for a command that is simple to use and has similar syntax to the time command. I am trying to find the memory usage of a md5 hashing ...
1
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1answer
199 views

How do I time how long my pg_restore takes in the command line?

I'm trying to track the amount of time the process takes for when I move around my data and upgrade my web app. From the command line, how would I track the amount of time elapsed from when the ...
1
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2answers
426 views

Moving Older Version Files to another folder via a script [closed]

I am trying to find a way of getting my cmd script to look through my folder, find the older versions of the pdf docs in the folder and move them to another folder called older versions. Problem I am ...
0
votes
1answer
526 views

How do you time how long a command took to run? [duplicate]

How would you find out how long a running process took to complete? Example: date; dd bs=1m if=/foo of=bar; date ^This example only has 1 second of resolution. Any shell is acceptable.
14
votes
4answers
2k views

Make bash use external `time` command rather than shell built-in

How can I make bash use time binary (/usr/bin/time) by default instead of the shell keyword? which time returns /usr/bin/time type time returns time is a shell keyword Running time is obviously ...
0
votes
2answers
103 views

Programmatically get folders last edit time

How can I programmatically get a folders latest edit? I have already written the following script: #!/usr/bin/perl my @ls_command_result=qx(ls -l); my @the_folder=grep /folder_i_want/, ...
1
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2answers
7k views

Date time in Linux bash [closed]

I am trying to display a date time in the form of 07/08/2013 16:52:13 by using command in bash script: dt=`date '+%d/%m/%Y_%H:%M:%S'` which variable is used to populate a CSV file. The only ...
8
votes
2answers
1k views

Temporarily change time

I need to test aspects of my software that only happen at certain times of the day. Rather than waiting whole days (and getting here at 2:00 AM), I'd like to change the time. But I'd rather not ...
1
vote
1answer
257 views

What value is stored in linux xtime variable?

Whenever I print the value of /proc/interrupts the value of rtc0 in IRQ8 which is for RTC shows only 1 interrupt on CPU0. I have read that when booting the value of the xtime variable is stored from ...
2
votes
0answers
103 views

Which counter generates timer interrupts?

I did a iotop to observe the interrupts on my computer. This is the interrupt shown most often. 0 [PIC-edge time] 247 Ints/s (max: 389) I believe it's the timer interrupt, well since ...
2
votes
1answer
71 views

List of Recently Modified Files of a specified user in whole disk?

One of my colleague is suddenly getting sick seriously and I need to finish his part, so knowing what he is working on most recently would be useful... For example, if I want to see the most recent ...
1
vote
1answer
103 views

Find if a process terminates in a specific amount of time

I am running a program.Inside this program i run a specific command and i use ulimit command to terminate the running of that command if it exceeds an amount of time.To be more clear i run this: ...
3
votes
1answer
405 views

Use time ,timeout and ulimit commands properly

I'm running a command in CentOS and at the same time I want to do 2 things: write the run time of the command to a file and set a time limit which stops the command I implemented the first one ...
1
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1answer
4k views

Arch time zone: Wrong time due to local-time hardware clock

My hardware clock is set to local time (GMT +2) and my fresh Arch installation apparently thinks that it is not, so it adds 3 hours to it. I've fiddled with hwclock and timedatectl without hope. I'm ...
1
vote
1answer
977 views

How can I determine the wall clock time of a process?

I have found the general Linux program time, which times a command. For example, suppose I want to time the execution of foo. I can use: time foo which gives this sample output: real 0m8.738s ...
2
votes
1answer
3k views

Extremely long time for an ext4 fsck

The problem that I am having is the extremely long time that fsck is taking. I have thoroughly made searches on Google, but I could not find anything that would resolve the problem. The command that ...
3
votes
1answer
356 views

Running time command with cron

So I have a crontab that have this line: 30 16 * * * (time sysbench --test=cpu --cpu-max-prime=20000 run) 2>> ~/cpu.out I use this because time output goes by default to stderr and I want to ...
1
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1answer
544 views

Getting “zsh: command not found: time” when running `time` in subshell

I installed ZSH (and Oh-My-ZSH) on a Ubuntu 12.10 64 bit machine a few days ago. I just tried to do: time (time ls) and got this error: zsh: command not found: time ( time ls; ) 0.00s user 0.00s ...
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4answers
437 views

Can I write the output the of time difference command to a file?

Can I write the output of the time difference command to a file? For example, I tried: $ time foo.sh > bar.txt But it only gives the output of foo.sh to bar.txt.
4
votes
1answer
374 views

when timing a command execution time with sudo, `time` should be before `sudo` or after `sudo`?

when timing a command execution time with sudo, time should be before sudo or after sudo? time sudo command or sudo time command which one is correct? the output seems very different to me ...
3
votes
2answers
246 views

How to get time synced outputs (different timezones on servers)?

So imagine there are ~100 servers with different timezones (not all diff., but many-many timezones). There are outputs on the server logs like: server1:BFE4C025 0420201413 P H sysplanar0 ...
3
votes
1answer
193 views

How to measure the clock pulse of my computer manually?

My PC has two processors, and I know that each one runs at 1.86 GHz. I have just read about clock cycles and I only have a (very) rough understanding, so I apologize beforehand if my question is so ...