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LinuxCommandMain.LinuxCommand HistoryHide minor edits - Show changes to output Added lines 6-15:
'''Backup to tape drive /dev/st0''' Following command to backup the /webroot directory and its content to /dev/st0 with 256 blocking factor: # tar cvf -b 256 /dev/st0 /webroot -b, --blocking-factor N use record size of Nx512 bytes (default N=20) Added lines 6-15:
'''Using cdrecord''' # cdrecord -scanbus # cdrecord -v speed=2 dev=0,0,0 -data cdimage.iso (The CD writer is the device labeled '0,0,0') '''Making ISO images''' mkisofs -r -o output_cd_image data_on_HDD (then use cdrecord to write output_cd_image to a CD) Added lines 6-9:
'''Finding out the disk usage for a partition or dir du - estimate file space usage''' du -hm --max-depth 1 Changed lines 3-5 from:
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'''How to Monitor the services that is using up most of the cpu and memory on a server.''' ps auxfw|sort -nr|grep -v 0.0 [root@wordsworth ~]# ps auxfw|sort -nr|grep -v 0.0 USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND linux 613 0.4 3.2 21844 15896 ? S 15:01 0:10 wish /usr/bin/amsn linux 4085 0.1 1.7 28384 8240 ? S Mar01 13:45 /usr/libexec/wnck-applet --oaf- linux 32728 1.8 7.5 67216 36196 ? S 14:54 0:50 /usr/lib/opera/9.10-20061214.5/ linux 31458 0.1 1.0 48068 5088 ? Sl 12:26 0:15 xmms -e linux 30276 0.6 4.4 79656 21488 ? Sl 07:55 3:09 skype linux 30261 3.0 18.8 221380 90792 ? Sl 07:54 14:15 \_ /home/linux/firefox/firefox- linux 30099 0.1 4.5 123240 21776 ? Sl 07:25 0:54 \_ /usr/lib/ linux 2285 0.1 2.6 35504 12560 ? S Mar06 3:06 gaim root@server16 [~]# ps auxfw|grep -vE '0.0|0.1' [[Linux Server Monitoring Commands- How do i monitor a Linux Server]] ---- '''How verify integrity of password files''' We can use the command below to verify the integrity of the password file. Changed lines 54-57 from:
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---- '''How to verify the integrity of the group file''' Deleted line 59:
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'''How to check information regarding LVM''' Deleted line 77:
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'''How to find processor related stats''' mpstat Changed lines 97-98 from:
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vmstat Changed lines 109-114 from:
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---- '''How do i display info regarding all TCP/IP sockets in operation currently''' Use the command netstat netstat -a usage: netstat [-veenNcCF] [<Af>] -r netstat {-V|--version|-h|--help} netstat [-vnNcaeol] [<Socket> ...] netstat { [-veenNac] -i | [-cnNe] -M | -s } -r, --route display routing table -i, --interfaces display interface table -g, --groups display multicast group memberships -s, --statistics display networking statistics (like SNMP) -M, --masquerade display masqueraded connections -v, --verbose be verbose -n, --numeric don't resolve names --numeric-hosts don't resolve host names --numeric-ports don't resolve port names --numeric-users don't resolve user names -N, --symbolic resolve hardware names -e, --extend display other/more information -p, --programs display PID/Program name for sockets -c, --continuous continuous listing -l, --listening display listening server sockets -a, --all, --listening display all sockets (default: connected) -o, --timers display timers -F, --fib display Forwarding Information Base (default) -C, --cache display routing cache instead of FIB ---- Added lines 1-3:
(:Google1:) (:Googletext:) Changed lines 12-13 from:
pwck (8) to:
pwck (8)- verify integrity of password files Changed lines 38-41 from:
grpck (8) to:
grpck (8)- verify integrity of group files Added lines 97-98:
(:Google1:) (:Googlemmm:) Added lines 3-38:
'''Linux Commands''' '''pwck''' - shibu@shibu-laptop:~$ apropos pwck pwck (8) - verify integrity of password files [@ shibu@shibu-laptop:~$ sudo pwck /etc/passwd [sudo] password for shibu: user lp: directory /var/spool/lpd does not exist user news: directory /var/spool/news does not exist user uucp: directory /var/spool/uucp does not exist user www-data: directory /var/www does not exist user list: directory /var/list does not exist user irc: directory /var/run/ircd does not exist user gnats: directory /var/lib/gnats does not exist user nobody: directory /nonexistent does not exist user dhcp: directory /nonexistent does not exist user syslog: directory /home/syslog does not exist user klog: directory /home/klog does not exist user hplip: directory /var/run/hplip does not exist user haldaemon: directory /home/haldaemon does not exist pwck: no changes shibu@shibu-laptop:~$ @] '''grpck''' shibu@shibu-laptop:~$ apropos grpck grpck (8) - verify integrity of group files Added lines 26-27:
%blue%mpstat Changed lines 41-42 from:
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%blue%vmstat [linux@wordsworth ~]$ man -k vmstat vmstat (8) - Report virtual memory statistics linux@wordsworth ~]$ [linux@wordsworth ~]$ vmstat 2 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 2 0 355084 20888 10736 84396 1 1 37 29 11 13 10 22 67 1 1 0 355084 20936 10736 84396 0 0 0 0 1284 1191 10 42 48 0 3 0 355084 19848 10736 84396 0 0 0 0 1246 1123 9 44 47 0 Changed lines 31-40 from:
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[linux@wordsworth ~]$ mpstat 5 Linux 2.6.9-55.0.2.ELsmp (wordsworth.armialocal.com) 08/12/2007 09:59:51 PM CPU %user %nice %system %iowait %irq %soft %idle intr/s 09:59:56 PM all 18.70 0.10 42.50 0.00 0.10 0.00 38.60 1290.60 10:00:01 PM all 15.30 0.00 41.80 0.00 0.10 0.00 42.80 1276.00 10:00:06 PM all 19.98 0.00 42.36 0.20 0.00 0.00 37.46 1273.35 Added lines 22-31:
---- Stats ----- [linux@wordsworth ~]$ man -k mpstat mpstat (1) - Report processors related statistics snmpstatus (1) - Retrieves important information from a network entity [linux@wordsworth ~]$ Changed lines 1-23 from:
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[[Linux Server Monitoring Commands- How do i monitor a Linux Server]] ---- LVM Commands ---- *resize2fs (8) - ext2/ext3 file system resizer: resize2fs /dev/mynew_vg/vol01 *pvcreate (8) - initialize a disk or partition for use by LVM : pvcreate /dev/sdb1 *pvdisplay (8) - display attributes of a physical volume: pvdisplay *vgcreate (8) - create a volume group: vgcreate mynew_vg /dev/sdb1 , vgcreate mynew_vg /dev/sdb1 /dev/sdb2 *vgextend (8) - add physical volumes to a volume group : vgextend mynew_vg /dev/sdb2 *lvcreate (8) - create a logical volume in an existing volume group: *vgdisplay (8) - display attributes of volume groups * create a logical volume of size 400 MB -L 400 : lvcreate -L 400 -n vol01 mynew_vg * create a logical volume of size 4 GB -L 4G : lvcreate -L 4000 -n vol02 mynew_vg *mke2fs (8) - create an ext2/ext3 filesystem *mke2fs [mkfs] (8) - create an ext2/ext3 filesystem *mke2fs - create an ext2/ext3 filesystem : mkfs.ext3 /dev/mynew_vg/vol01 Changed line 1 from:
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[[Linux Server Monitoring Commands- How do i monitor a Linux Server]] Added line 1:
[[Linux Server Monitorin Commands- How do i monitor a Linux Server]] |