Echo Write Error Invalid Argument Bash
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[x] First Last Prev Next This bug is not in your last search results. Bug7249 - "write error: fatal write error invalid argument Invalid argument" when onlining already onlined CPU Summary: "write error: Invalid argument"
Git Write Error Invalid Argument
when onlining already onlined CPU Status: REJECTED WILL_NOT_FIX Product: Platform Specific/Hardware Classification: Unclassified Component: x86-64 Hardware: i386 Linux echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device bash: echo: write error: invalid argument Importance: P2 normal Assigned To: Andi Kleen URL: Keywords: Depends on: Blocks: Show dependency tree /graph Reported: 2006-10-02 15:08 UTC by Bryce Harrington Modified: 2008-09-05 04:09 UTC (History) cat: write error: invalid argument CC List: 2 users (show) Markus.Rechberger protasnb See Also: Kernel Version: 2.6.18 Tree: Mainline Regression: --- Attachments Add an attachment (proposed patch, testcase, etc.) Description Bryce Harrington 2006-10-02 15:08:11 UTC Most recent kernel where this bug did not occur: Has been present in the 2.6.17 and 2.6.18 releases, -rc, -mm, and -git trees Distribution: Gentoo Hardware Environment: x86_64, 2x AMD Opteron Software Environment: See http://crucible.osdl.org/runs/2328/sysinfo/amd01.1/ Problem Description: In testing hotplug cpu recently, I notice a discrepancy in how it's handled on x86_64 vs. other architectures. Normally, if you attempt to online an already onlined cpu, it returns an exit code of 1 but no error message. However, on x86_64 it produces this error message: x86_64: # echo 1 > /sys/devices/system/cpu/cpu1/online -bash: echo: write error: Invalid argument # echo 0 > /sys/devices/system/cpu/cpu1/online # echo 0 > /sys/devices/system/cpu/cpu1/online -bash: echo: write error: Device or resource busy # echo 1 > /sys/devices/system/cpu/cpu1/online # echo 1 > /sys/devices/system/cpu/cpu1/online -bash: echo: write error: Invalid argument I think it should not be printing an error message in this case. Here is sample output on a couple other architectures: ia64, ppc64: # echo 1 > /sys/devices/system/cpu/cpu1/online # echo 1 > /sys/devices/system/cpu/cpu1/online # echo $? 1 # echo 0 > /sys/devices/system/cpu/cpu1/online # echo $? 0 # echo 1 > /sys/devices/system/cpu/cpu1/online # echo $? 0 Test output that identified this issue: http://crucible.osdl.org/runs/2271/test_output/lhcs_regression.log Comment 1 Andi Kleen 2006-10-02 15:22:00 UTC No error would mean returning 0. But the
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted https://bugzilla.kernel.org/show_bug.cgi?id=7249 up and rise to the top Bash Script: Invalid argument up vote 4 down vote favorite Why can't I use echo $1 > /sys/class/backlight/acpi_video0/brightness in a simple bash script? It gives me the error: echo: write error: Invalid argument. bash unix share|improve this question edited Feb 4 '12 at 6:29 Garrett 3,66411330 asked Feb 3 '12 at 22:31 David Thorisson 12826 Having the same issue while http://superuser.com/questions/385761/bash-script-invalid-argument trying to do the same thing. I've tried things like function brightness { bright=$1; sudo su -c 'echo "$bright" > /sys/class/backlight/acpi_video0/brightness'; } too, but I still haven't figured it out. –hangtwenty Nov 2 '12 at 12:15 add a comment| 4 Answers 4 active oldest votes up vote 1 down vote accepted Try echo "$1" > /sys/class/backlight/acpi_video0/brightness. I bet the shell is expanding $1 and thus echo thinks it is receiving a bunch of arguments, rather than a string. share|improve this answer answered Feb 4 '12 at 0:35 surfasb 19.2k33663 add a comment| up vote 0 down vote You should check what the actual value of $1 is. This error means you are trying to write an invalid value -- either it's out of range or just in general not a meaningful value. At a glance, it appears that it accepts an integer in the range 0 to 8 (for me at least). share|improve this answer answered Feb 4 '12 at 6:42 FatalError 1,388813 add a comment| up vote 0 down vote Try using let #!/bin/bash POLKU='/sys/class/backlight/radeon_bl0/brightness' if [ $# -eq "0" ] then echo 100 > $POLKU else let gg=$1 echo $gg > $POLKU fi share|improve this answer answered Dec 8 '14
Wiki Search Tutorials/Articles Search HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Linux Forums > Linux - Software echo and cat : write error: Invalid argument User Name Remember Me? Password Linux - Software http://www.linuxquestions.org/questions/linux-software-2/echo-and-cat-write-error-invalid-argument-945600/ This forum is for Software issues. Having a problem installing a new program? Want to https://github.com/Sepero/temp-throttle/issues/5 know which application is best for the job? Post your question in this forum. Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration write error is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging in? Please write error invalid visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 05-17-2012, 04:52 PM #1 rey Member Registered: Sep 2011 Posts: 49 Rep: echo and cat : write error: Invalid argument hello i'm trying to write to this file Code: /proc/net/xt_recent/recent_blocked however my commands have failed even executed as root: Code: cat $DIR/recents > /proc/net/xt_recent/recent_blocked cat: write error: Invalid argument that file stores some blocked ip addresses for iptables, i need to know how to write to this file to make my scripts work, i have searched a lot without clear results thanks for your help rey View Public
Sign in Pricing Blog Support Search GitHub This repository Watch 12 Star 77 Fork 24 Sepero/temp-throttle Code Issues 11 Pull requests 1 Projects 0 Pulse Graphs New issue Line 82: echo: write error: Invalid argument #5 Closed andyforceno opened this Issue Apr 27, 2014 · 21 comments Projects None yet Labels None yet Milestone No milestone Assignees Sepero 5 participants andyforceno commented Apr 27, 2014 When I run temp_throttle.sh with root privileges, the following error is displayed in the shell terminal: Lines 80 - 83 are: echo $FREQ_TO_SET for i in $(seq 0 $CORES); do echo $FREQ_TO_SET > /sys/devices/system/cpu/cpu$i/cpufreq/scaling_max_freq done I'm wondering will this error affect the function of the script? It seems to be working OK, my laptop isn't going above 60c, which is the desired threshold. I am running Peppermint Linux 3. If you need any other info, let me know! Sepero self-assigned this Apr 28, 2014 Owner Sepero commented Apr 28, 2014 Fascinating error. I can try to solve it for you, but I'll need some more info about your system. Run this- find /sys/ -iname "*freq*" > freq_list.txt It will save output into a file named "freq_list.txt". I need to view the that output. andyforceno commented Apr 28, 2014 Here is the output from that file: /sys/devices/pnp0/00:05/rtc/rtc0/max_user_freq /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_RP1_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_min_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_RPn_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_RP0_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_cur_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_max_freq_mhz /sys/devices/system/cpu/cpu0/cpufreq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq /sys/devices/system/cpu