updated one-liners

- signed-off-by: trimstray <trimstray@gmail.com>
This commit is contained in:
trimstray 2018-07-03 10:13:28 +02:00
parent fb91f7ee88
commit 884ac520fa

View File

@ -253,6 +253,9 @@ performance of any of your sites from across the globe.<br>
* [ps](#tool-ps) * [ps](#tool-ps)
* [find](#tool-find) * [find](#tool-find)
* [diff](#tool-diff) * [diff](#tool-diff)
* [tail](#tool-tail)
* [cpulimit](#tool-cpulimit)
* [pwdx](#tool-pwdx)
- **[HTTP/HTTPS](#http-https)** - **[HTTP/HTTPS](#http-https)**
* [curl](#tool-curl) * [curl](#tool-curl)
* [httpie](#tool-httpie) * [httpie](#tool-httpie)
@ -287,6 +290,12 @@ disown -a && exit
kill -9 $$ kill -9 $$
``` ```
###### Perform a branching conditional
```bash
true && { echo success;} || { echo failed; }
```
###### Pipe stdout and stderr to separate commands ###### Pipe stdout and stderr to separate commands
```bash ```bash
@ -316,7 +325,6 @@ rm !(*.foo|*.bar|*.baz)
```bash ```bash
vim scp://user@host//etc/fstab vim scp://user@host//etc/fstab
``` ```
___
###### Create a directory and change into it at the same time ###### Create a directory and change into it at the same time
@ -324,6 +332,14 @@ ___
mkd () { mkdir -p "$@" && cd "$@"; } mkd () { mkdir -p "$@" && cd "$@"; }
``` ```
###### Convert uppercase files to lowercase files
```bash
rename 'y/A-Z/a-z/' *
```
___
##### Tool: [mount](https://curl.haxx.se) ##### Tool: [mount](https://curl.haxx.se)
###### Mount a temporary ram partition ###### Mount a temporary ram partition
@ -355,6 +371,12 @@ ___
ps awwfux | less -S ps awwfux | less -S
``` ```
###### Processes per user counter
```bash
ps hax -o user | sort | uniq -c | sort -r
```
___ ___
##### Tool: [find](https://curl.haxx.se) ##### Tool: [find](https://curl.haxx.se)
@ -381,6 +403,46 @@ ___
diff <(cd directory1 && find | sort) <(cd directory2 && find | sort) diff <(cd directory1 && find | sort) <(cd directory2 && find | sort)
``` ```
___
##### Tool: [tail](https://curl.haxx.se)
###### Annotate tail -f with timestamps
```bash
tail -f file | while read; do echo "$(date +%T.%N) $REPLY"; done
```
###### Analyse an Apache access log for the most common IP addresses
```bash
tail -10000 access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail
```
##### Tool: [cpulimit](https://curl.haxx.se)
###### Limit the cpu usage of a process
```bash
cpulimit -p pid -l 50
```
##### Tool: [pwdx](https://curl.haxx.se)
###### Show current working directory of a process
```bash
pwdx <pid>
```
##### Tool: [taskset](https://curl.haxx.se)
###### Start a command on only one CPU core
```bash
taskset -c 0 <command>
```
<a name="http-https"><b>HTTP/HTTPS</b></a> <a name="http-https"><b>HTTP/HTTPS</b></a>
##### Tool: [curl](https://curl.haxx.se) ##### Tool: [curl](https://curl.haxx.se)
@ -614,6 +676,12 @@ server> nc -l 5000 -e /bin/bash
client> nc 10.240.30.3 5000 client> nc 10.240.30.3 5000
``` ```
###### Simple file server
```bash
while true ; do nc -l 5000 | tar -xvf - ; done
```
###### Simple HTTP Server ###### Simple HTTP Server
> Restarts web server after each request - remove `while` condition for only single connection. > Restarts web server after each request - remove `while` condition for only single connection.
@ -700,6 +768,22 @@ Date: Sun, 01 Jul 2018 20:12:08 GMT
Last-Modified: Sun, 01 Apr 2018 21:53:37 GMT Last-Modified: Sun, 01 Apr 2018 21:53:37 GMT
``` ```
###### Create a single-use TCP or UDP proxy
```bash
### TCP -> TCP
nc -l -p 2000 -c "nc [ip|hostname] 3000"
### TCP -> UDP
nc -l -p 2000 -c "nc -u [ip|hostname] 3000"
### UDP -> UDP
nc -l -u -p 2000 -c "nc -u [ip|hostname] 3000"
### UDP -> TCP
nc -l -u -p 2000 -c "nc [ip|hostname] 3000"
```
___ ___
##### Tool: [socat](http://www.dest-unreach.org/socat/doc/socat.html/) ##### Tool: [socat](http://www.dest-unreach.org/socat/doc/socat.html/)
@ -753,6 +837,12 @@ lsof -i tcp:443
lsof -Pan -i tcp -i udp lsof -Pan -i tcp -i udp
``` ```
###### List all files opened by a particular command
```bash
lsof -c "process"
```
**Tool: [netstat](http://www.dest-unreach.org/socat/doc/socat.html/)** **Tool: [netstat](http://www.dest-unreach.org/socat/doc/socat.html/)**
###### Graph # of connections for each hosts ###### Graph # of connections for each hosts