# cheat-sheet

+ [Convert Emails](https://git.laurelcountycorrections.org/jpickard/cheat-sheet#converting-emails)
+ [File Management](https://git.laurelcountycorrections.org/jpickard/cheat-sheet#find-and-copy-files-by-extension-recursively)
+ [Network, Firewall, UFW](https://git.laurelcountycorrections.org/jpickard/cheat-sheet#ufw)
+ [NFS](https://git.laurelcountycorrections.org/jpickard/cheat-sheet#mount-nfs-share-nfs-common-or-nfs-utils)
+ [Merge Video](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#merge-video-files-with-ffmpeg)
+ [Hylafax](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#hylafax)
+ [Linux Users](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#linux-users)
+ [Windows](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#windows)
+ [Data Recovery](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#data-recovery)
+ [QEMU](https://git.laurelcountycorrections.org/jpickard/cheat-sheet/src/branch/master/README.md#qemu)

My cheat sheet for commands I have trouble remembering.

## Converting Emails
### EML to MBOX using eml2mbox (email2mbox-git on AUR)
```
cd /path/to/eml/files
eml2mbox
```
This creates `.archive.mbox`.

### MBOX to HTML Threads using Mhonarc (mhonarc on AUR)
```
cd /path/to/.archive.mbox/file
mhonarc .archive.mbox
```
This creates `threads.html` and extracts all information into the directory.


## Find and copy files by extension recursively

```find . -name '*.pdf' -exec cp -r {} /home/jpickard/pdffiles \;```

## 7-Zip compression (p7zip)

```7z a archivename.7z thingtobearchived```

## Compress and split files (6GB chunks in below example)

```7z -v6g a ARCHIVE.7z DIRECTORY.OF.FILES```

## Recursively unzip
```while [ "`find . -type f -name '*.zip' | wc -l`" -gt 0 ]; do find -type f -name "*.zip" -exec unzip -- '{}' \; -exec rm -- '{}' \;; done```

## Merge PDF files

#### Ghostscript
```gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=mergedfile.pdf -dBATCH file1.pdf file2.pdf```

#### ImageMagick
```convert file1.pdf[0-1] file2.pdf mergedfile.pdf```

## Convert webp to JPG/PNG
```dwebp mycat.webp -o mycat.png```

### ExifTool
#### List metadata of image
`exiftool image.jpg`
#### Remove metadata of image
`exiftool -all= image.jpg` /or/ `exiftool -all= *.jpg`
#### Recursively, overwriting the files
`exiftool -overwrite_original -recurse -all= *.jpg`

## UFW
### Examples

```
ufw status numbered
ufw delete 2
ufw allow from 192.168.1.10 to any port 22 proto tcp
ufw allow in on tailscal0 to interfaceip port 22 from otherdeviceip
ufw reset
```

## List ports Linux is listening on

`sudo ss -tunlp`

`sudo lsof -nP -iTCP -sTCP:LISTEN`

## List alive IPs on Network (nmap)
`sudo nmap -n -sn 192.168.56.0/24 -oG - | awk '/Up$/{print $2}' | sort -V`

## Mount NFS Share (nfs-common or nfs-utils)
`sudo mount -t nfs 10.10.0.10:/backups /var/backups`
### /etc/fstab
```
# <file system>     <dir>       <type>   <options>   <dump>	<pass>
10.10.0.10:/backups /var/backups  nfs      defaults    0       0
```

## Merge video files with ffmpeg
```
$ cat files.txt
file 'file 1.mkv'
file 'file 2.mkv'
file 'file 3.mkv'
file 'file 4.mkv'
```
`ffmpeg -f concat -safe 0 -i files.txt -c copy output.mkv`

# Hylafax

## Send a Fax
`sendfax -n -d 8643605 test` // where test is a text document with content

## Remove a fax from queue
`faxrm jobid`

## Watch fax status
`watch -n 2 faxstat -s`

# Linux Users

## Delete User
`sudo deluser username`

## Add User with Specific UID
`sudo adduser -u UIDNUMBER username`

## Add user to specific Group
`sudo usermod -aG GROUP USERNAME`

# Windows

## List usernames on machine
`net user`

## Change user password
`net user username newpassword`

## Disconnect from network drives/directories
`net use * /del` (Then restart service `Workstation` and check `Credential Manager`)

## Create Directory and hide it
```
mkdir Pickard
attrib +s +h Pickard
```

## Manage Processes
### List Running Tasks
`tasklist`
### Force Kill a Task
`taskkill /IM JailTracker.exe /F`

## List Printers from CMD
`wmic printer list brief`

## Clear Temporary files
`rd %temp% /s /q`

## Add Persistent Static Route
`route -p add 192.168.56.0 mask 255.255.255.0 192.168.30.1 metric 1`

`route -p add NETWORK mask NETMASK GATEWAY metric 1`

# Data Recovery

## ddrescue
Take an image of a drive and log:

`sudo ddrescue /dev/sdb path/to/image.dd path/to/log.txt`

Clone Disk A to Disk B:

`sudo ddrescue --force --no-scrape /dev/sdA /dev/sdB path/to/log.txt`

# QEMU

## Get disk information
`qemu-img info disk.qcow2`

## Shrink .qcow2
`qemu-img resize disk.qcow2 --shrink -10G`

## Import qcow2
`sudo qm importdisk 101 disk.qcow2 localstorageplace`