Common Linux Commands

As with the Cisco commands, I normally forget commands. This is just a reference of some commands.

Read scsi devices, memory, cpu
cat /proc/scsi/scsi
cat /proc/meminfo
cat /proc/cpuinfo

top

echo "- - -" > /sys/class/scsi_host/hostX/scan
X stands for the SCSI bus to scan

cat /sys/class/scsi_host/hostX/proc_name
X stands for the SCSI bus to list

SCSI device information
scsiinfo -l

Find files less than a day old:
find . -type f -mtime -1

Find files modified more than a day ago
find . -type f -mtime 1

Hardware info
hwinfo more | grep

Disk space (human readable sizes)
df -h

Update timeserver
ntpdate -u time.timeserver.com

OES version
cat /etc/novell-release

SLES version
cat /etc/SuSE-release

Folder size
du -sk DirName

Hardware serial number (Use on Dell/HP servers – probably others)
dmidecode|grep "Serial Number"