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my Unix/Gnu Linux cheat sheat

Nasser M. Abbasi

August 20, 2025   Compiled on August 20, 2025 at 8:58pm
1 Links
2 To use rsync for backup from 2 drives on windows from mounted shared folder using VBOX
3 How to remove colors from terminal
4 How to convert files in current folder from png to eps
5 How to change extension of files in current folder
6 recusrive tree search for string in files
7 recusrive tree search for string in files with specific extension
8 recusrive tree search for string in files, where the string is at start of a line
9 recusrive tree search for string in files, print file name and the line with match
10 recusrive tree search for string in files, print file name only where match found
11 How to resize images in current folder based on width only
12 How to find image width and height?
13 How to resize animated gif file without losing the animation?
14 How to batch convert all .png files to .jpg?
15 How to install Linux on VBox
16 to use shared folders on a VBOX with Linux guest to windows
17 How to make sure virtual box linux is running fast?
18 join AVI files to one
19 How to change premissions recursive?
20 How to delete lines from file that starts with #?
21 How to search all tree and find file with specific name and then delete lines from this file that starts with #?
22 tree command
23 How copy selected files in one tree to another keeping same tree structure?
24 How to increase file handles limit for a process?
25 How to unzip a file using PHP on server?
26 How to increase open file limit?
27 How to run sudo command without getting command not found error?
28 How to replace spaces in file names and folder with underscore?
29 How to convert DOS file to Unix?
30 bulk file renaming in bash, to remove name with spaces, leaving trailing digits
31 How to convert djvu files to pdf?
32 How to test the C compiler quickly?
33 How to delete files with some extension inside specific folder over tree?
34 How to download a web page using wget?
35 How to delete folders inside tree with only specific name?
36 How to delete files with specific names inside tree?
37 How to sort files in tree by date changed?
38 How print longest line in file?
39 How to change all spaces to underscore in folder names in tree?
40 apt useful commands
41 How to start a command after some time
42 How to mount shared windows folder from Linux guest using VMWARE?
43 How to Change color for title bar for terminal on Linux manjaro?
44 How to make guest OS (windows) see USB devices on Linux Host
45 How to remove a network disk in windows?
46 How to share folder using windows as guest and linux as host?
47 How to find files on linux?
48 How to check is samba is running?
49 How to see what printers are there in Linux?
50 How to extract first frame of animated gif file as png image?
51 How to change title of Linux termina?
52 How to slow down or speed up an existing animated gif file?
53 Misc. useful linux commands
54 How to find files that changed before sometime ago?
55 How to change how window bars and windows (terminals) look like?
56 How to test Linux performance using sysbench ?
57 How to test Linux performance using geekbench ?
58 How to stop window to snap/expand automatically when top edge hit the top of the desktop ?
59 How to find line number which is longest in file?
60 How to change line in all files in tree?
61 How to delete lines in all files in tree that contain some specific text?
62 How to remove some text from a line (but not delete the whole line)
63 How to make window automatically resize in virtual box?
64 How to install Linux on its own PC?
65 How to make tar.gz and how to extract it?
66 How to find size of folder?
67 How to use rsync to backup my system
68 How to extrat first page of pdf file?
69 How to remove snapd from Linux?
70 How to kill brave when it hangs?
71 How to install xampp on Arch based?
72 How to mount ntfs disk on linux?
73 How to find all disks?
74 How to format disk to ext4?
75 How to add disk to linux and make it mount automatically each time?
76 How to handle error VirtualBox can’t enable the AMD-V extension?
77 How to use X applications on wayland desktop on arch based Linux?