Shell

Shell

Найти строку в коде

rg -w 'recogniser' /path/to/somewhere

Найти строку в файлах рекурсивно

grep -rnw '/path/to/somewhere/' -e 'pattern'

• -r or -R is recursive,
• -n is line number, and
• -w stands for match the whole word.
• -l (lower-case L) can be added to just give the file name of matching files.
• -e is the pattern used during the search

Along with these, --exclude, --include, --exclude-dir flags could be used for efficient searching:

• This will only search through those files which have .c or .h extensions:

  grep --include=\*.{c,h} -rnw '/path/to/somewhere/' -e "pattern"
  

• This will exclude searching all the files ending with .o extension:

  grep --exclude=\*.o -rnw '/path/to/somewhere/' -e "pattern"
  

• For directories it's possible to exclude one or more directories using the --exclude-dir parameter. For example, this will exclude the dirs dir1/, dir2/ and all of them matching *.dst/:

  grep --exclude-dir={dir1,dir2,*.dst} -rnw '/path/to/search/' -e "pattern"
  

Отфильтровать строки

cat file | grep -v "filter it"

Сохранить PATH с sudo

sudo env "PATH=$PATH" ...

Дефолтное значение переменной

FOO="${VARIABLE:-default}"

Создать архив

tar -czvf filename.tar.gz /path/to/dir1 dir2 file1 file2

Nano: удалить все строчки

Mac OS: Esc + T

Размер директории

du -sh /path/to/directory