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Uses shell expansion to create a back-up called file.txt.bak
48cp file.txt{,.bak} -
Remember to backup everything before changing it so you can restore all to normal.
16cp httpd.conf{,.bk} -
Utilizes shell expansion of {} to give the original filename and a new filename as arguments to `cp`. Can easily be extended to make multiple copies. Show Sample Output
11cp foo{,bak} -
This inserts timestamp instead of .bak extension.
1cp filename{,.`date +%Y%m%d-%H%M%S`} -
Use shell expansion to create a back-up copy (file.txt.bak) of a file (file.txt) and keep the original last modified date and time.
0cp -p file.txt{,.bak}
What do you think?
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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$ cp -bfS.bak filename filenamecould be shortened to$ cp -bfS.bak filename{,}...and if you don't mind the default backup suffix (~), it could be even shorter:$ cp -bf filename{,}Personally, when doing backups, I prefer to throw in the -a flag, so:$ cp -abf filename{,}