# Bash snippets

## Get size of files of current directory with mask
```php
du -c `find . -maxdepth 1 -name '*.php'` | tail -1
```

## Count lines in files with mask
```bash
find . -maxdepth 1 -name '*.php' -print | xargs wc -l
```

## Exclude path from search by `find`
```bash
find ./ -name '*.*' -not -path "./pathname/*"
```

## Rename files by mask, add extension to files
```bash
rename 's/(.*)/$1.jpg/' *
```

## Recursively output list of files with extensions
```bash
ls -1 -- **/+(*.jpg|*.gif|*.png)
```

## Use `find` with multiple extensions
### Method 1
```bash
find . -type f \( -name "*.shtml" -or -name "*.css" \)
```
### Method 2
```bash
find -type f -regex ".*/.*\.\(shtml\|css\)"
```

## C++ calls graph
```bash
clang++ -S -emit-llvm main.cpp -o - | opt -analyze -dot-callgraph
dot -Tpng -ocallgraph.png callgraph.dot
```