Some Helpful *ix Commands

Last few days ran into few linux commands which is very important in day today development, wanted to add it to my blog for later reference:

Match String and get line number and filename:

grep -n STRING_TO_SEARCH * (* can be filename if you know the file to look into)

Remove first N lines from a file:
```
sed -i '1,10d' filename
```
Run a shell script as background and have output into a log:
source filetorun.sh readfromit.txt > log.log 2>&1 &

Check all process by username:
```
ps -uusername
```
Find number of files inside a folder:(cd into the folder and)
```
ls -1 | wc -l
```
Check memory usage in MB:
```
free -m
```
Machine’s uptime:
```
uptime
```

Trying to understand node.js

Found a very good tutorial 🙂
http://www.nodebeginner.org/#javascript-and-nodejs