![Console and basic
commands
#directory/folders: concept of root/ubuntu privileged user
#pwd
#whoami, who, users, w, finger <user>
#concept of home folder
#console (tab, select, insert, arrows)
#history
#processes (ps [–ef]), top, uptime, kill, kill -9
#date
#hostname, uname [–mrs],[-a], free [-m], lscpu, cat
/proc/meminfo| /proc/cpuinfo, mount
#bash/kash
#spacing and disk usage (df –k, su –dk)
#reboot and shutdown
#system settings (ex: /etc/hosts)](https://image.slidesharecdn.com/e7b4fbf3-cd7f-47d0-99ca-9a900fd7029a-150416180910-conversion-gate01/85/Unix_basics-6-320.jpg)
![Networking and connectivity
• Ping/tracert
• Telnet [port], localhost, telnet 0
• Ssh and ssh tunnel
• Curl [-k] [-x]
• Netstat
• Wget
• Ipconfig](https://image.slidesharecdn.com/e7b4fbf3-cd7f-47d0-99ca-9a900fd7029a-150416180910-conversion-gate01/85/Unix_basics-8-320.jpg)
![FILES AND FOLDERS
- CD
- MKDIR/RMDIR
- LS [-LRT]
- CP/SCP/WINSCP
- MV/RM [-RF]
- WILD CARD (*)
- TOUCH
- DIFF
- CAT
- FILE PERMISSIONS AND USER GROUPS:
SUDO AND ROOT USER
- CHOWN AND CHMOD
- DOT (./) AS CURRENT FOLDER
- SYMBOLIC (SOFT) LINK: LN -S](https://image.slidesharecdn.com/e7b4fbf3-cd7f-47d0-99ca-9a900fd7029a-150416180910-conversion-gate01/85/Unix_basics-9-320.jpg)
![Working with server
logs and search
- tomcat/apache log level
- rsyslog/syslog
- tail [-f]
- more/less/head
- find/locate
- grep/egrep (regex), zgrep
- grep [-i] [-v]
- concept of Recursion
- nullify log: cat /dev/null >
log.txt](https://image.slidesharecdn.com/e7b4fbf3-cd7f-47d0-99ca-9a900fd7029a-150416180910-conversion-gate01/85/Unix_basics-11-320.jpg)
Unix_basics
- 1. UNIX/LINUX BASICS FOR QA Alex Polovinko 2/7/2015
- 2. Overview and objectives • Familiarizing yourself with Unix/Linux console • Understanding of command structure • Typical QA tasks and troubleshooting skills • Most commonly used commands
- 3. Agenda: # What is Unix/Linux (5min) # Login to system (10 min) # Console look and basic system commands (10 min) # Command structure (5 min) # Networking and connectivity (10 min) # Working with files (10 min) # Working with logs and search (10 min) # Shell scripting (5 min) # Services and applications (10 min) # Daemons and cron processes (5 min) # Installation, archiving (10 min) #Q&A (10 min) + Demo and hands on exercise ~ 30% time allocation
- 4. Why *nix - First OS with natural multiusers support - Open source/ community support - Easy for administrating and tuning - Less resources consumption - Good server choice
- 5. Logging to system: Secure shell (ssh): putty => Win and ssh client (Unix/IOS) http://www.chiark.greenend.org.uk/~sgtatham/putty/downl oad.html Authentication: user/password and public/private key
- 6. Console and basic commands #directory/folders: concept of root/ubuntu privileged user #pwd #whoami, who, users, w, finger <user> #concept of home folder #console (tab, select, insert, arrows) #history #processes (ps [–ef]), top, uptime, kill, kill -9 #date #hostname, uname [–mrs],[-a], free [-m], lscpu, cat /proc/meminfo| /proc/cpuinfo, mount #bash/kash #spacing and disk usage (df –k, su –dk) #reboot and shutdown #system settings (ex: /etc/hosts)
- 7. • Arguments1 • Pipes2 • Output and input3 • Man and help4 Command format
- 8. Networking and connectivity • Ping/tracert • Telnet [port], localhost, telnet 0 • Ssh and ssh tunnel • Curl [-k] [-x] • Netstat • Wget • Ipconfig
- 9. FILES AND FOLDERS - CD - MKDIR/RMDIR - LS [-LRT] - CP/SCP/WINSCP - MV/RM [-RF] - WILD CARD (*) - TOUCH - DIFF - CAT - FILE PERMISSIONS AND USER GROUPS: SUDO AND ROOT USER - CHOWN AND CHMOD - DOT (./) AS CURRENT FOLDER - SYMBOLIC (SOFT) LINK: LN -S
- 10. EMBEDDED VI EDITOR - VI/VIM/NANO - READ/INSERT MODES - SEARCH - LINE # - EDIT AND SAVE - EXIT
- 11. Working with server logs and search - tomcat/apache log level - rsyslog/syslog - tail [-f] - more/less/head - find/locate - grep/egrep (regex), zgrep - grep [-i] [-v] - concept of Recursion - nullify log: cat /dev/null > log.txt
- 12. Exercise 1. Find any uniq value in all files in current folder 2. The same on the whole server
- 13. Shell scripts How to run Execution permissions What is inside Example
- 14. Unix services and applications sendmail rsyslog iptables (firewall) mysql webservers start/stop
- 15. Daemons and cron processes • What is daemon • Cron functionality • Cron format: 10 8 1 * *
- 16. Misc • Archive – untar: tar -zxvf myfile.tar.gz – tar -czf workspace.tar.gz * Install: yum/apt-get rpm packets
- 17. Resources • Unix commands <http://www.cheat-sheets.org/saved- copy/fwunixref.pdf> • Additional reading material text here < http://www.cyberciti.biz/tips/linux-unix- commands-cheat-sheets.html > • This slide deck and related resources: <Facebook group>
- 18. QUESTIONS?