Say I'll start writing  sudo cp /etc/var/more/evenMORE/fileABC   and as the target of the copying, I'd like to define the same folder, except just a different filename (whether it is a new name like "randomNAME" or an iteration of the file "fileABC-backup01" shall be irrelevant). How can I reuse the input file so that I do not have to write it out again? Is this even possible?
I know how to rename files in Unix:  $ mv ~/folder/subfolder/file.txt ~/folder/subfolder/file.sh       ^-------this part------^    ^------this part-------^   It takes too long time to repeat ~/folder/subfolder/file twice.  Is there a quicker way?
Deriving Newton's Third Law from homogeneity of Space How can I integrate $$\ln \left( x+\sqrt{1+x^2} \right) $$   The problem is from IA Maron Calculus, Problem 4.3.17. The problem is under the heading 'Integration by parts'. I have tried it, but it just leads to 2 unsolvable integrals I want to remotely control my Android device from my PC without rooting it. Is this possible? Triggered send status queued, need to get an alert Do I need to upgrade RAM from 4GB to 8GB for Android development? I'm an android developer and have laptop with 4GB RAM. When I compile my project the RAM is used at 100%.    If I add more RAM will it solve the problem? How to Logout of an Application Where I Used OAuth2 To Login With Google? Quarks in a hadron: where does the mass come from? Why are drivers and firmwares almost always written in C or ASM and not C++? How do I get my arrow keys working in the at> prompt In a project the customer wants the images of the WMS to be secured against unauthorized access.   What are the common solutions to realize that?   Are they compatible with the OGC-standards? I have an uploaded video and I want to cut sections of audio (strong language) or add beeps on top without reuploading the video. Find the last $2$ digits of $$\large7^{7^{7^{10217}}}$$   So far I have: $17\cdot 601=10217$ and $7=7 \pmod{10}$. Any help greatly appreciated. (In, On or At) GitHub? What's the difference between say:     "The project will be on GitHub",      "The project will be in GitHub" and      "The project will be at GitHub"? Alignment issue in Area 51 main site - site switcher, inbox and achievements Can we insert or update FieldSets using apex code? Is there some rule against ending a sentence with the contraction "it's"? I heard this lyric in a song the other day and it just sounded so wrong that I assumed it must be incorrect grammar, but I can't find any specific prohibition that applies.     That's what it's.    That rolls off your tongue with the grace of a moose in a tutu, but I can't figure out why.  There is clearly no problem with ending other sentences with a contraction. These sound fine.     I thought I could, but I can't.   Stop touching that, it will fall off if you don't.   You say that the sky is green, but it isn't.   Also, it sounds just fine if you remove the contraction:     That's what it is.   So what's up with this construction? Should it be avoided? Is my sugar daddy scamming me Feature selection with Random Forests Why crontab scripts are not working? How can I check the SMART status of a SSD or HDD on current versions of Ubuntu 14.04 through 20.04? How can I check the SMART status of a drive under 14.04 and beyond? I've seen  but it doesn't seem to apply under 14.04 and later.