This script will iterate over a file and echo out every single line
This script will iterate over a file and echo out every single line:
```bash
#!/bin/bash
for line in$(cat file.txt);do
echo$line
done
```
Another way of writing is this:
```bash
#!/bin/bash
while read p;do
echo$p
done <onlyIps.txt
done <file.txt
```
## For-loops
```bash
#!/bin/bash
for((i = 0; i < 10; i++));do
echo$i
done
```
Another way to write this is by using the program **seq**. Seq is pretty much like **range()** in python. So it can be used like this:
Another way to write this is by using the program `seq`. Seq is pretty much like `range()` in python. So it can be used like this:
```bash
#!/bin/bash
for x in`seq 1 100`;do
echo$x
done
@@ -37,7 +44,10 @@ done
## If statement
`$1` here represent the first argument.
```bash
if["$1"==""];then
echo"This happens"
fi
@@ -46,6 +56,8 @@ fi
## If/Else
```bash
#!/bin/bash
if["$1"==""];then
echo"This happens"
else
@@ -59,13 +71,15 @@ fi
Command line arguments are represented like this
```bash
#!/bin/bash
$1
```
This is the first command line argument.
## Deamonize an execution
## Daemonize an execution
If you do a ping-sweep with host the command will take about a second to complete. And if you run that against 255 hosts I will take a long time to complete. To avoid this we can just deamonize every execution to make it faster. We use the **&** to demonize it.
If you do a ping-sweep with host the command will take about a second to complete. And if you run that against 255 hosts I will take a long time to complete. To avoid this we can just deamonize every execution to make it faster. We use the `&` to daemonize it.
```bash
#!/bin/bash
@@ -83,12 +97,16 @@ It has happened to me several times that I want to input the output of a command
I search for a file, find three, and take the last line, which is a path. Now I want to cat that path:
