RHEL AUDITD
UNIXSHADOW
by wp_hr
2y ago
Environment Red Hat Enterprise Linux (RHEL) 4 5 6 7 Issue How to monitor the permission change and ownership change of a particular directory or file? How to configure auditd to find how a file was modified in Red Hat Enterprise Linux? What tool can audit files at a directory level? How do I monitor files or ..read more
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Ansible Tower cli cheat sheet
UNIXSHADOW
by wp_hr
2y ago
$ tower-cli {resource} {action} ... The “resource” is a type of object within Tower (a noun), such as user, organization, job_template, etc.; resource names are always singular in Tower CLI (so it is tower-cli user, never tower-cli users). The “action” is the thing you want to do (a verb). Most Tower CLI resources have the following actions–get, list, create, modify, and delete–and have options corresponding to ..read more
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VI Editor cheat sheet
UNIXSHADOW
by wp_hr
2y ago
vi mode commands Command Action k Move one line upwards l Move one character to the right h Move one character to the left w Move one word to the right W Move one word to the right past punctuation b Move one word to the left B Move one word to the left past ..read more
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Unix command openssl ciphers
UNIXSHADOW
by wp_hr
2y ago
ciphers – SSL cipher display and cipher list tool. SYNOPSIS openssl ciphers [-s] [-v] [-V] [-ssl2] [-ssl3] [-tls1] [-stdname] [cipherlist] DESCRIPTION The ciphers command converts textual OpenSSL cipher lists into ordered SSL cipher preference lists. It can be used as a test tool to determine the appropriate cipherlist. COMMAND OPTIONS -s Only list supported ciphers: those consistent with the ..read more
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Ubuntu – migrate packages from one server as a source to target server
UNIXSHADOW
by wp_hr
2y ago
The initial-status.gz and dpkg-query method from https://unix.stackexchange.com/a/80520/9132gives the most accurate and concise list for my needs. comm -13 \ <(gzip -dc /var/log/installer/initial-status.gz | sed -n ‘s/^Package: //p’ | sort) \ <(comm -23 \ <(dpkg-query -W -f=’${Package}\n’ | sed 1d | sort) \ <(apt-mark showauto | sort) \ )   Check_diff   for i in `cat diff.txt`;do echo $i ..read more
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Using sar to check Network stats / Packets
UNIXSHADOW
by wp_hr
2y ago
Monitoring network interface statistics command: sar -n DEV The report contains the following IFACE: Name of the network interface for which statistics are reported. rxpck/s: packet receiving rate (unit: packets/second) txpck/s: packet transmitting rate (unit: packets/second) rxkB/s: data receiving rate (unit: Kbytes/second) txkB/s: data transmitting rate (unit: Kbytes/second) rxcmp/s: compressed packets receiving rate (unit: Kbytes/second ..read more
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Puppet dev environment with lxc
UNIXSHADOW
by wp_hr
2y ago
  credit: https://blkperl.github.io/puppet-dev-with-lxc.html   Install LXC On Ubuntu installing LXC is easy and the package comes with working Ubuntu and Debian templates. sudo apt-get install lxc Create a puppet master The first thing we need is a puppet master. To do this we are going to use the lxc-create command to create a minimal Ubuntu Precise ..read more
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Vsphere powercli/powershell – VM average performance stats for x number of days
UNIXSHADOW
by wp_hr
2y ago
execute the code below after connecting to your VI server: change values as needed:   example: C:\PS>Connect-VIServer -Server 10.23.112.235 -Protocol https -User Administrator -Password pass01   Get-VM | where {$_.name -like “*publ*”} | Select Name, VMHost, NumCpu, MemoryMB, ` @{N=”CPU Usage (Average), Mhz” ; E={[Math]::Round((($_ | Get-Stat -Stat cpu.usagemhz.average -Start (Get-Date).AddDays(-30) -IntervalMins 5 | Measure-Object ..read more
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CURL – test for website response
UNIXSHADOW
by wp_hr
2y ago
command line: for i in `seq 1 10`;do curl -s -w '\nLookup time:\t%{time_namelookup}\nConnect time:\t%{time_connect}\nPreXfer time:\t%{time_pretransfer}\nStartXfer time:\t%{time_starttransfer}\n\nTotal time:\t%{time_total}\n' -o /dev/null http://www.google.com;done; Lookup time: 0.009 Connect time: 0.036 PreXfer time: 0.036 StartXfer time: 0.115 Total time: 0.143 Lookup time: 0.010 Connect time: 0.037 PreXfer time: 0.037 StartXfer time: 0.117 Total time: 0.145 Lookup time: 0.012 Connect time ..read more
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RHEL add global proxy
UNIXSHADOW
by wp_hr
2y ago
Testing whether a proxy is set This command will show if there is a proxy server configured on the system: Raw echo $http_proxy Proxy setting for command line programs The http_proxy environment variable is used to specify proxy settings to client programs such as curl and wget. No username and password required: Raw export http_proxy=http://SERVER:PORT/ Username and password authentication: Raw ..read more
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