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Commands tagged System Administration

Commands tagged System Administration from sorted by
Terminal - Commands tagged System Administration - 9 results
*/5 * * * * root /usr/local/nagios/sbin/nsca_check_disk 2>&1 |/usr/bin/logger -t nsca_check_disk
2010-07-02 00:47:05
User: StefanLasiewski
Tags: System Administration cronjob logs logging
6
Up
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Don't spam root. Log your cronjob output to syslog

This command will log the output of your simple cronjobs to syslog, and syslog will take it from there. Works great for monitoring scripts which only produce simple output.

Advantages:

* This can be used by regular users, without modifying system files like /etc/syslog.conf

* Reduce cron spam to root@localhost (Please stop spaming the sysadmins)

* Uses common tools like syslog (and logrotate) so that you don't need to maintain yet another krufty logfile.

* Still ensures that the output is logged somewhere, for posterity. Perhaps it's stored the secure, central syslog server, for example.

* Seems to work fine on Ubuntu, CentOS, FreeBSD & MacOSX

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
H=$(until ([ $i -le 6 -a $i -gt 0 -o $i -le 23 -a $i -gt 21 ] ); do i=$(date +%N | cut -c8-10); done ; echo $i) ; M=$(until [ $i -le 59 ]; do i=$(date +%N | cut -c8-10); done ; echo $i) ; echo $M $H \* \* \* backup-rsync-push.sh
2010-05-29 08:42:43
User: christian773
Functions: cut date echo
Tags: System Administration cronjob
1
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create random numbers within range for conjob usage

if you need to install cron jobs in a given time range.

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date MMDDhhmmYYYY
2010-05-29 08:26:13
User: christian773
Functions: date
Tags: Date manipulation System Administration
-1
Up
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manually set system date/time

date MMDDhhmmYYYY

date MMDDhhmm

# example 27.12.1975 08:00

date 122708001975

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tune2fs -c -1 -i 0 /dev/VG0/data
2010-05-29 08:20:35
User: christian773
Functions: tune2fs
Tags: Filesystem System Administration
1
Up
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turn off auto hard disc boot scanning for ext3
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tune2fs -l $(df -P / | tail -n1 | cut -d' ' -f1 ) | grep 'Filesystem created:'
2010-05-29 08:15:25
User: christian773
Functions: cut df grep tail tune2fs
Tags: System Administration install system
-2
Up
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show system installation date
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sudo find /etc/rc{1..5}.d -name S99myservice -type l -exec sh -c 'NEWFN=`echo {} | sed 's/S99/K99/'` ; mv -v {} $NEWFN' \;
2010-01-03 00:56:57
User: zoomgarden
Functions: find mv sed sh sudo
Tags: System Administration
0
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Manage "legacy" service run control links

Change run control links from start "S" to stop "K" (kill) for whatever run levels in curly braces for a service called "myservice". NEWFN variable is for the new filename stored in the in-line shell. Use different list of run levels (rc*.d, rc{1,3,5}.d, etc.) and/or swap S with K in the command to change function of run control links.

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sudo touch /forcefsck
2009-10-29 17:04:47
User: johnraff
Functions: sudo touch
Tags: System Administration Linux
34
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Run a file system check on your next boot.

The empty file /forcefsck causes the file system check fsck to be run next time you boot up, after which it will be removed.

This works too:

sudo >/forcefsck
Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
lsof -c dhcpd
2009-04-17 07:18:38
User: d4n3sh
Tags: System Administration lsof
22
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List all files opened by a particular command

List all file opened by a particular command based on it's command name.

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lsof -p 15857
2009-04-17 07:16:03
User: d4n3sh
Tags: System Administration PID lsof
6
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List files opened by a PID

Lis all files opened by a particular process id. "PID"

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