[Linux] Tips & Tricks.

Abhishek
Member • Aug 10, 2013

[Linux] Tips & Tricks.
This Thread is dedicated for tips & tricks of Linux. Gather up & share some tricks & tips for linux.
I will roll the dice first.

Counting The Number Of Files In A Directory :
- 'cd' to the desire directory
- Then type :
```
 echo * | wc -w 
```
Check On The Date & time Computer Was Re-booted :
- go to root & type :
```
 last reboot 
```
- To know date & time system was booted, go to root & type :
```
 who -b 
```
Find Files & Move It With Single Command :
```
 find Name_Of_Directory -type f -iname "*.pdf" -exec mv {} Location_Where_You_Wanna_Copy \; 
```
example :
```
 find /abc/ebooks -type f -iname "*.pdf" -exec mv {} /xyz/books \; 
```
The above example shows that, from directory /abc/ebooks all .pdf extension files will be moved to /xyz/books directory.
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Nayan Goenka

Member • Aug 10, 2013

I already made a thread regarding a lot of commands. Still if you need to make a complete directory, you can check it out here. It is almost a<a href="https://ss64.com/bash/" target="_blank" rel="nofollow noopener noreferrer">An A-Z Index of the Linux command line - SS64.com</a>.

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Abhishek Rawal

Member • Aug 10, 2013

Nayan Goenka
I already made a thread regarding a lot of commands. Still if you need to make a complete directory, you can check it out here. It is almost a<a href="https://ss64.com/bash/" target="_blank" rel="nofollow noopener noreferrer">An A-Z Index of the Linux command line - SS64.com</a>.
Tips & Tricks != Commands.

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Abhishek Rawal

Member • Aug 10, 2013
Format Drive From Terminal :

(We will format USB drive in this)
- Insert USB drive in USB slot.
- Open Terminal & type
```
 df 
```
- This will display directory path of various drives. Check image below :

The highlighted directory i.e /dev/sdc1 is the flash-drive which I wanna format.

- Unmount the flash drive first by typing :
```
 sudo umount <path> 
```
here in this example it will be something like
```
 sudo umount /dev/sdc1 
```
- Now to format the flash drive to ext4, type :
```
 sudo mkfs.ext4  -n 'CrazyEngineers' -l /dev/sdc1 
```
You can format drive in another formats using : mkfs.ext2, mkfs.ext3, mkfs.ext4, mkfs.vfat, mkfs.msdos, mkfs.minix etc. etc.

- Type df again to check the result :

👍
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Manish Goyal

Member • Aug 13, 2013
Create a tunnel between server and you localserver to access remote server resources through following command
```
ssh -N -L 3336:127.0.0.1:3306 -i <option private KEY> username@servername.com
```
Above command will simply map you local server port 3336 to 3306 , with this you can access remote Mysql (3306) through local 3336 port
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