move only if file exists in a shell script
One-liner: [ -f old ] && mv old nu
mv
Angular design pattern: MVC, MVVM or MV*?
Angular 2 isn’t really MVC (but I suppose you can draw parallels). It is Component Based. Let me explain: Angular 1 is MVC and MVVM (MV*). Angular 1 was groundbreaking for several reasons, but one of the main reasons was because it used Dependency Injection. This was a new concept compared with other JS Frameworks … Read more
How to rename with prefix/suffix?
You could use the rename(1) command: rename ‘s/(.*)$/new.$1/’ original.filename Edit: If rename isn’t available and you have to rename more than one file, shell scripting can really be short and simple for this. For example, to rename all *.jpg to prefix_*.jpg in the current directory: for filename in *.jpg; do mv “$filename” “prefix_${filename}”; done; or … Read more
How to do a git diff on moved/renamed file?
You need to use -M to let git autodetect the moved file when diffing. Using just git diff as knittl mentioned does not work for me. So simply: git diff -M should do it. The documentation for this switch is: -M[<n>], –find-renames[=<n>] Detect renames. If n is specified, it is a threshold on the similarity … Read more
Undo git mv (rename)
Non-cheeky answer: git mv file2 file1 Updates the index for both old and new paths automatically. Check documentation of git mv
Is there a way to make mv create the directory to be moved to if it doesn’t exist?
How about this one-liner (in bash): mkdir –parents ./some/path/; mv yourfile.txt $_ Breaking that down: mkdir –parents ./some/path # if it doesn’t work; try mkdir -p ./some/path creates the directory (including all intermediate directories), after which: mv yourfile.txt $_ moves the file to that directory ($_ expands to the last argument passed to the previous … Read more
Is it possible to move/rename files in Git and maintain their history?
Git detects renames rather than persisting the operation with the commit, so whether you use git mv or mv doesn’t matter. The log command takes a –follow argument that continues history before a rename operation, i.e., it searches for similar content using heuristics. To lookup the full history, use the following command: git log –follow … Read more