bash script kill whois or other command that is running for too long

Adjust to suit your needs.  Currently this would kill any whois process running for more than 30 seconds or more than 1 minute.

Add it as a cronjob.  The motivation is that some commands have no timeout and just end up using up CPU and memory for no reason while never exiting to free resources.


IFS=$(echo -en "\n\b")
for pid in `ps aux|grep whois`; do

    echo "pid=::$pid::"
    id=`echo "$pid"|awk '{print $2}'`
     echo "id=$id"
    runningseconds=`echo "$pid"|awk '{print $10}'|cut -f 2 -d ":"`
    runningminutes=`echo "$pid"|awk '{print $10}'|cut -f 1 -d ":"`

    echo "running seconds=$runningseconds"

    if [ $runningseconds -gt 30 ] || [ $runningminutes -gt 1 ]; then
        echo "seconds running is greater than 30 or minutes greater than 1"
        echo "kill -9 $id"
        kill -9 $id



bash, whois, longadjust, currently, cronjob, motivation, commands, timeout, cpu, exiting, bin, ifs, echo, en, quot, pid, ps, aux, grep, awk, runningseconds, runningminutes, fi,

Latest Articles

  • virt-resize: error: libguestfs error: could not create appliance through libvirt.
  • Asterisk Does Not Retry When Authentication Fails
  • Linux Debian Ubuntu How To Install PEPPER Faster and Latest Adobe Flash Player in Firefox
  • How To Speed Up Linux Ubuntu and Debian Based Computers By Improving CPU Performance and Changing the CPU Governor
  • Convert data or file to base64 on a single line
  • Linux Mint Ubuntu Debian radeon slow 2D performance issues radeon_dp_aux_transfer_native: 158 callbacks suppressed
  • mdadm: super0.90 cannot open /dev/sdb1: Device or resource busy mdadm: /dev/sdb1 is not suitable for this array.
  • How To Install NextCloud on Centos 7 and Centos 8
  • AH01630: client denied by server configuration:
  • ERROR: Could not find a version that satisfies the requirement PIL (from versions: none) ERROR: No matching distribution found for PIL
  • ZTE Camera Cannot Work unable to connect to camera. Camera has been disabled becaue of security policies or is being used by other apps
  • QEMU KVM how to boot off a physical CD/DVD/BDROM Drive
  • How To Install OpenProject on Centos 7 Step-by-Step Guide
  • Ubuntu Debian Linux Cannot Install Wine Solution - wine1.6 : Depends: wine1.6-i386 (= 1:1.6.2-0ubuntu14.2) but it is not installable wine1.4 : Depends: wine1.6 but it is not going to be installed
  • How To Install python 3.4 3.5 and up on Linux with wine - Working Solution
  • using Xvfb on virtual remote ssh server to have X graphical programs work
  • ssh Received disconnect from port 22:2: Too many authentication failures
  • named bind errors - DNSKEY: unable to find a DNSKEY which verifies the DNSKEY RRset and also matches a trusted key for '.'
  • OpenVZ vs LXC DIR mode poor security in LXC
  • httpd: Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load modules/ into server: /lib64/ symbol __h_errno, version GLIBC_PRIVATE not defined in file libc.s