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Author SHA1 Message Date
onceupon
5740e44d62 + find 1. Recursively count all the files in a directory 
+ Condition and loop
1.  Using test command, to test if the length of variable is nonzero

+ Others
1. Create a screen and name it 'test'

+ Time
1. Get the seconds since epoch (Jan 1 1970) for a given date (e.g Mar 16 
2021)
2. Convert the number of seconds since epoch back to date

+ fix some markdown syntax issue
 2021-03-16 22:08:02 +08:00
onceupon
093edef55a + time 
returns the current time with nanoseconds.
 2021-03-16 19:43:41 +08:00
Bonnie I-Man Ng
8b505a4dc5
Merge pull request #16 from fazlearefin/master 
Use curl for http status code and reveal a shortened url
 2020-09-08 13:28:35 +08:00
Fazle Arefin
1e10f6f269
Use curl to unshorten a shortened URL 2020-08-29 21:22:59 +10:00
Fazle Arefin
4b2167dca3
Use curl to find out the http status code of a URL 2020-08-29 21:21:09 +10:00
bonnie
b396c45634 fix markdown 2020-07-19 23:42:01 +08:00
bonnie
f7850ce5c4 fix styling 2020-07-19 23:39:57 +08:00
bonnie
5e8aa86062 fix styling 2020-07-19 23:39:00 +08:00
bonnie
8cdf69d5c5 fix header 2020-07-19 23:36:11 +08:00
bonnie
e1a3a2a25d update 
- Get UUID of a disk (e.g. sdb)
 2020-07-19 23:28:25 +08:00
bonnie
708ed78958 Networking 
- To block port 80 (HTTP server) using iptables.
 2020-07-19 23:18:25 +08:00
bonnie
c434421b77 System 
-  Check status of a process using PID
 2020-07-19 23:13:06 +08:00
bonnie
d6a31731d7 System 
- Set the default user and key for a host when using SSH
 2020-07-19 23:06:03 +08:00
bonnie
27da2e897b update 
- Edit PS1 variable for bash
 2020-07-19 22:58:30 +08:00
bonnie
ad6e6112f1 Find 
- Find large files in the system (e.g. >4G)
 2020-07-19 22:55:29 +08:00
bonnie
ddd2d3aa1f Others 
- List one file per line.
 2020-07-19 22:52:32 +08:00
bonnie
f6be60886d Condition and loop 
- Make directories listed in a file
 2020-07-19 22:45:24 +08:00
bonnie
cbe90cb99f System 
- Check for package update
 2020-07-19 22:40:49 +08:00
bonnie
7aba786152 Networking 
- Scan for open ports and OS and version detection
 2020-07-19 22:38:34 +08:00
bonnie
7e9a091b3f Networking 
- Nc as a chat tool!
 2020-07-19 22:32:08 +08:00
bonnie
39fbcae0b7 Others 
- Zip the content of a directory without including the directory itself
 2020-07-19 22:28:38 +08:00
bonnie
fe139c35d1 System 
- Run yum update excluding a package
 2020-07-19 22:18:48 +08:00
bonnie
e17743e9b9 edit 
- Which ports are listening for TCP connections from the network
 2020-07-19 22:16:45 +08:00
bonnie
3d6f8bcda1 Time 
- Print date with formatting
 2020-07-19 22:14:19 +08:00
bonnie
8e6a0f8eb9 Networking 
- Perform network throughput tests
 2020-07-19 22:12:40 +08:00
bonnie
8ed1acc61b System 
- Work with yum history
 2020-07-19 21:40:03 +08:00
bonnie
3571593f1b update 
- Get DNS TXT record a of domain
 2020-07-19 21:28:12 +08:00
bonnie
ea0d9bbd5b Networking 
- Get DNS TXT record a of domain
 2020-07-19 21:25:51 +08:00
bonnie
46bda81c1a Networking 
- resolve a domain to IP address
 2020-07-19 21:22:40 +08:00
bonnie
d7a768c446 rearrange orders 2020-07-19 21:15:06 +08:00
bonnie
6c083c518e Data wrangling 
- Delete all non-printing characters
 2020-07-19 21:13:37 +08:00
bonnie
0df09b76c3 Networking 
- Look up website information (e.g. name server), searches for an object
in a RFC 3912 database.
 2020-07-19 20:47:49 +08:00
bonnie
640fb02686 edit 
- List only directory
 2020-07-19 20:43:22 +08:00
bonnie
5f04d6349c Time 
- Print date in %Y-%m-%d
 2020-07-19 20:36:59 +08:00
bonnie
de26eeae47 update intro 2020-07-19 00:08:43 +08:00
bonnie
65e0abdff5 lint 2020-07-19 00:02:03 +08:00
bonnie
4b6247a712 Xargs 
- Prompt commands before running commands
 2020-07-18 23:48:32 +08:00
bonnie
328bd53614 Networking 
- Check connection to host
 2020-07-18 23:42:09 +08:00
bonnie
8b0d9aa44a Networking 
- Print the route packets trace to network host
 2020-07-18 23:38:19 +08:00
bonnie
5b12320bc9 Networking 
- Send a ping with a limited TTL to 10
 2020-07-18 23:17:25 +08:00
bonnie
61d2422c53 Networking 
- Check if a host is up and scan for open ports, also skip host
discovery.
 2020-07-18 23:02:20 +08:00
bonnie
0aef9e7537 System 
-  Reading from journal file
 2020-07-18 22:53:12 +08:00
bonnie
fdae9e9013 System section 
- Performance monitoring tool - sar
 2020-07-18 22:50:56 +08:00
bonnie
7857f80844 update "Find empty (0 byte) files" 2020-07-18 22:37:25 +08:00
Bonnie I-Man Ng
ba73fb49d2
Merge pull request #15 from fazlearefin/master 
Use find to find and delete empty files
 2020-07-18 22:35:31 +08:00
bonnie
94defb0184 add to "time" 
- sleep a random duration

Signed-off-by: bonnie <nim.1111.ou@gmail.com>
 2020-07-18 22:34:09 +08:00
Fazle Arefin
77c45a8784
Use find to find and delete empty files 2020-05-24 00:12:17 +10:00
bonnie
abed667be3 add to "time" 
- sleep a random duration
 2020-02-15 23:53:37 +08:00
bonnie
4d017c2d4d add "system" and "other" commands: 
- auditctl
- df
- identify
 2020-02-15 23:32:16 +08:00
bonnie
30e7fd0280 add fallocate command to "Others" 2020-01-10 01:05:47 +08:00