ohazot_command

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command_line — tools and tips.

NETWORK

Local ip

# ifconfig -a
# ip add

Public IP

URLS

https://icanhazip.com/

https://ipecho.io/plain

https://ifconfig.co/ip

https://ifconfig.me/ip

Examples

$ curl https://icanhazip.com/
$ curl https://ipecho.io/plain; echo
$ wget -qO - ifconfig.co/ip
$ lynx -dump ifconfig.me/ip; echo

CURL

Options

-s	\| silent.
-4	\| use ipv4.
-6	\| use ipv6.
-L	\| if URL has been moved, request the new location.
-o	\| output file.
--proxy	\| set proxy `--proxy PROTOCOL://IP[:PORT]`
--socks5	\| set socks5 proxy `--socks5 IP[:PORT]`

COMPARISON

$ diff *
$ sdiff -s *
$ cmp -b *

Example

$ cat t1
hello
bye
line3
$ cat t2
hello
bye
linel
$ diff *
3c3
< line3
---
> linel
$ sdiff -s *
line3                                                         | linel
$ cmp -b *
t1 t2 differ: byte 15, line 3 is  63 3 154 l

SPACE

df -h [PATH]

du

-h	\| human readable size output.
-a	\| display all files and directories.
-d [N]	\| max recursion depth.
-s	\| summarize, display only the total.

$ du -had1 [PATH]

$ du -hs [PATH]

SORT

-u	\| unique, suppress duplicate lines.
-h	\| human numeric sort.
-r	\| reverse order.
-R	\| random sort.
-k [N]	\| sort by field N.
-t [C]	\| use C as field separator, the default separator is space.

Examples

$ cat test
a 1,12
b 3,100
d 2,1
c 10,14
b 3,100
$ cat test | sort -u
a 1,12
b 3,100
c 10,14
d 2,1
$ cat test | sort -u -k2
a 1,12
c 10,14
d 2,1
b 3,100
$ cat test | sort -u -k2 -h
a 1,12
d 2,1
b 3,100
c 10,14
$ cat test | sort -u -k2 -h -t ","
d 2,1
a 1,12
c 10,14
b 3,100

$ cat t | sort -k2 -h -t , d 2,1 a 1,12 c 10,14 b 3,100 b 3,100

AUTHORS

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