one-liners: added new examples

- signed-off-by: trimstray <trimstray@gmail.com>
This commit is contained in:
trimstray 2018-07-03 21:09:12 +02:00
parent 884ac520fa
commit 9abbc8eecb

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@ -256,6 +256,8 @@ performance of any of your sites from across the globe.<br>
* [tail](#tool-tail) * [tail](#tool-tail)
* [cpulimit](#tool-cpulimit) * [cpulimit](#tool-cpulimit)
* [pwdx](#tool-pwdx) * [pwdx](#tool-pwdx)
* [tr](#tool-tr)
* [chmod](#tool-chmod)
- **[HTTP/HTTPS](#http-https)** - **[HTTP/HTTPS](#http-https)**
* [curl](#tool-curl) * [curl](#tool-curl)
* [httpie](#tool-httpie) * [httpie](#tool-httpie)
@ -269,6 +271,7 @@ performance of any of your sites from across the globe.<br>
* [socat](#tool-socat) * [socat](#tool-socat)
* [lsof](#tool-lsof) * [lsof](#tool-lsof)
* [netstat](#tool-nestat) * [netstat](#tool-nestat)
* [rsync](#tool-rsync)
- **[Programming](#programming)** - **[Programming](#programming)**
* [awk](#tool-awk) * [awk](#tool-awk)
* [sed](#tool-sed) * [sed](#tool-sed)
@ -338,6 +341,12 @@ mkd () { mkdir -p "$@" && cd "$@"; }
rename 'y/A-Z/a-z/' * rename 'y/A-Z/a-z/' *
``` ```
###### Print a row of characters across the terminal
```bash
printf "%`tput cols`s" | tr ' ' '#'
```
___ ___
##### Tool: [mount](https://curl.haxx.se) ##### Tool: [mount](https://curl.haxx.se)
@ -393,6 +402,12 @@ find / -mmin 60 -type f
find / -type f -size +20M find / -type f -size +20M
``` ```
###### Find duplicate files (based on MD5 hash)
```bash
find -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 33
```
___ ___
##### Tool: [diff](https://curl.haxx.se) ##### Tool: [diff](https://curl.haxx.se)
@ -419,6 +434,8 @@ tail -f file | while read; do echo "$(date +%T.%N) $REPLY"; done
tail -10000 access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail tail -10000 access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail
``` ```
___
##### Tool: [cpulimit](https://curl.haxx.se) ##### Tool: [cpulimit](https://curl.haxx.se)
###### Limit the cpu usage of a process ###### Limit the cpu usage of a process
@ -435,6 +452,8 @@ cpulimit -p pid -l 50
pwdx <pid> pwdx <pid>
``` ```
___
##### Tool: [taskset](https://curl.haxx.se) ##### Tool: [taskset](https://curl.haxx.se)
###### Start a command on only one CPU core ###### Start a command on only one CPU core
@ -443,6 +462,26 @@ pwdx <pid>
taskset -c 0 <command> taskset -c 0 <command>
``` ```
___
##### Tool: [tr](https://curl.haxx.se)
###### Show directories in the PATH, one per line
```bash
tr : '\n' <<<$PATH
```
___
##### Tool: [chmod](https://curl.haxx.se)
###### Remove executable bit from all files in the current directory
```bash
chmod -R -x+X *
```
<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)
@ -837,12 +876,26 @@ lsof -i tcp:443
lsof -Pan -i tcp -i udp lsof -Pan -i tcp -i udp
``` ```
###### List all open ports and their owning executables
```bash
lsof -i -P | grep -i "listen"
```
###### Show open ports
```bash
lsof -Pni4 | grep LISTEN | column -t
```
###### List all files opened by a particular command ###### List all files opened by a particular command
```bash ```bash
lsof -c "process" 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
@ -851,6 +904,22 @@ lsof -c "process"
netstat -an | grep ESTABLISHED | awk '{print $5}' | awk -F: '{print $1}' | grep -v -e '^[[:space:]]*$' | sort | uniq -c | awk '{ printf("%s\t%s\t",$2,$1) ; for (i = 0; i < $1; i++) {printf("*")}; print "" }' netstat -an | grep ESTABLISHED | awk '{print $5}' | awk -F: '{print $1}' | grep -v -e '^[[:space:]]*$' | sort | uniq -c | awk '{ printf("%s\t%s\t",$2,$1) ; for (i = 0; i < $1; i++) {printf("*")}; print "" }'
``` ```
###### Monitor open connections for specific port including listen, count and sort it per IP
```bash
watch "netstat -plan | grep :443 | awk {'print \$5'} | cut -d: -f 1 | sort | uniq -c | sort -nk 1"
```
___
**Tool: [rsync](http://www.dest-unreach.org/socat/doc/socat.html/)**
###### Rsync remote data as root using sudo
```bash
rsync --rsync-path 'sudo rsync' username@hostname:/path/to/dir/ /local/
```
<a name="programming"><b>Programming</b></a> <a name="programming"><b>Programming</b></a>
##### Tool: [awk](https://curl.haxx.se) ##### Tool: [awk](https://curl.haxx.se)
@ -883,6 +952,12 @@ sed -n 10p /path/to/file
sed -i 10d /path/to/file sed -i 10d /path/to/file
``` ```
###### Remove a range of lines from a file
```bash
sed -i <file> -re '<start>,<end>d'
```
___ ___
##### Tool: [grep](http://www.dest-unreach.org/socat/doc/socat.html/) ##### Tool: [grep](http://www.dest-unreach.org/socat/doc/socat.html/)