BASIC Commands for Liberty profile
server start <AppName>
server stop <AppName>
CLEAN CACHE
server stop <AppName>
server start <AppName> --clean
server stop <AppName>
server start <AppName>
Version Info
productInfo.sh --version
Client
client run <clientName>
client help
Manual Mustgather
server javadump <AppName> --include =heap
server package <AppName>
Commonly used openssl commands are as follows:
Check a certificate
openssl x509 -in certificate_name -text -noout
Get all certificates from a server
openssl s_client -connect host:ssl_port -showcerts
Convert a DER format certificate to PEM format
openssl x509 -inform der -in path_to_DER_certificate -out path_to_PEM_certificate
Convert a .pfx file to a JKS store
keytool -importkeystore -srckeystore path_to_.pfx_file -srcstoretype pkcs12 -destkeystore path_to_the_jks_file -deststoretype JKS -srcstorepass pfx_passwd -deststorepass pfx_passwd
Convert a .jks file to PKCS12 format
keytool -importkeystore -srckeystore path_to_.jks_file -destkeystore full_path_to_.p12_file-srcstoretype JKS - deststoretype PKCS12 -deststorepass pkcs12_store_password
Extract a private key from a .pfx file
openssl pkcs12 -info -in path_to_.pfx_file -nodes -nocerts -out private_key_file_name
Extract a public certificate from a .pfx file
openssl pkcs12 -in path_to_.pfx_file -out path_to_certificate_file -nokeys
Bash is a Unix command line interface for interacting with the operating system, available for Linux. Bash scripts help group commands to create a program. All instructions that run from the terminal work in Bash scripts as well.
Bash scripting is a crucial tool for system administrators and developers. Scripting helps automate repetitive tasks and interact with the OS through custom instruction combinations. The skill is simple to learn and requires only basic terminal commands to get started.
Please find the below sample script of backuping the txt file .
#!/bin/bash
Path=/opt/folder1/folder2
cp $path/folder3/test.txt test.txt_backup_original
Useful Information of Linux Directory Structure.
root directory:
/bin – binary or executable programs.
/etc – system configuration files.
/home – home directory. It is the default current directory.
/opt – optional or third-party software.
/tmp – temporary space.
/usr – User related programs.
/var – log files.
System Configuration Files:
/etc/bashrc – It is used by bash shell that contains system defaults and aliases.
/etc/crontab – A shell script to run specified commands on a predefined time interval.
/etc/exports – It contains information on the file system available on the network.
/etc/fstab – Information of the Disk Drive and their mount point.
/etc/group – It is a text file to define Information of Security Group.
/etc/grub.conf – It is the grub bootloader configuration file.
/etc/init.d – Service startup Script.
/etc/lilo.conf – It contains lilo bootloader configuration file.
/etc/hosts – Information of IP and corresponding hostnames.
/etc/hosts.allow – It contains a list of hosts allowed accessing services on the local machine.
/etc/host.deny – List of hosts denied to access services on the local machine.
/etc/inittab – INIT process and their interaction at the various run level.
/etc/issue – Allows editing the pre-login message.
/etc/modules.conf – It contains the configuration files for the system modules.
/etc/motd – It contains the message of the day.
/etc/mtab – Currently mounted blocks information.
/etc/passwd – It contains username, password of the system, users in a shadow file.
/etc/printcap – It contains printer Information.
/etc/profile – Bash shell defaults.
/etc/profile.d – It contains other scripts like application scripts, executed after login.
/etc/rc.d – It avoids script duplication.
/etc/rc.d/init.d – Run Level Initialisation Script.
/etc/resolv.conf – DNS being used by System.
/etc/security – It contains the name of terminals where root login is possible.
/etc/skel – Script that initiates new user home directory.
/etc/termcap – An ASCII file that defines the behavior of different types of the terminal.
/etc/X11 – Directory tree contains all the conf files for the X-window System.
User Related Files:
/usr/bin – It contains most of the executable files.
/usr/bin/X11 – Symbolic link of /usr/bin.
/usr/include – It contains standard include files used by C program.
/usr/share – It contains architecture independent shareable text files.
/usr/lib – It contains object files and libraries.
/usr/sbin – It contains commands for Super User, for System Administration.
Virtual and Pseudo Process Related Files:
/proc/cpuinfo – CPU Information
/proc/filesystems – It keeps the useful info about the processes that are running currently.
/proc/interrupts – it keeps the information about the number of interrupts per IRQ.
/proc/ioports – Contains all the Input and Output addresses used by devices on the server.
/proc/meminfo – It reports the memory usage information.
/proc/modules – Currently using kernel module.
/proc/mount – Mounted File-system Information.
/proc/stat – It displays the detailed statistics of the current system.
/proc/swaps – It contains swap file information.
Version Information File:
/version – It displays the Linux version information.
Log Files:
/var/log/lastlog – It stores user last login info.
/var/log/messages – It has all the global system messages.
/var/log/wtmp – It keeps a history of login and logout information.
What are Useful HTTP Status Codes?
101 Switching Protocol
102 Processing (WebDAV)
103 Early Hints
200 OK
201 Created
202 Accepted
203 Non-Authoritative Information
204 No Content
205 Reset Content
206 Partial Content
207 Multi-Status (WebDAV)
208 Already Reported (WebDAV)
226 IM Used (HTTP Delta encoding)
300 Multiple Choice
301 Moved Permanently
302 Found
303 See Other
304 Not Modified
305 Use Proxy
306 Unused
307 Temporary Redirect
308 Permanent Redirect
400 Bad Request
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict
410 Gone
411 Length Required
412 Precondition Failed
413 Payload Too Large
414 URI Too Long
415 Unsupported Media Type
416 Range Not Satisfiable
417 Expectation Failed
418 I’m a teapot
421 Misdirected Request
425 Too Early
426 Upgrade Required
428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
451 Unavailable For Legal Reasons
500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Timeout
505 HTTP Version Not Supported
506 Variant Also Negotiates
507 Insufficient Storage (WebDAV)
508 Loop Detected (WebDAV)
510 Not Extended
511 Network Authentication Required
How to find the WEB Error Codes?
Please find the below Codes.
1. 400 : Bad Request
2. 401: Unauthorized Error
3. 402: Payment Error
4. 403: Forbidden Error
5. 404: Not Found
6. 405: Method not allowed
7. 406 : Not acceptable
8. 407 :Proxy authentication required
9. 408: Request Timeout
10. 409 : Conflict
11. 410: Gone
12. 411: Length Required
13. 412: Precondition Failed
14. 413: Payload Too Large
15. 414: URL Too Long
11. 500 : Internal Server Error
12. 501 : Not Implemented
13. 502 :Service Temporarily Overload
14. 503: Service Unavailable
