1.

Record Nr.

UNINA9910704474003321

Autore

Guberman S (Steven)

Titolo

Introduction to dissociative recombination / / Steven L. Guberman and J. Brian A. Mitchell

Pubbl/distr/stampa

[Washington, D.C.] : , : National Aeronautics and Space Administration, , [1989]

Descrizione fisica

1 online resource (13 unnumbered pages)

Collana

NASA-CR ; ; 184950

Soggetti

Dissociation

Electron-ion recombination

Quantum theory

Rydberg series

Ion recombination

Rydberg states

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Title from title screen (viewed Mar. 1, 2013).

Nota di bibliografia

Includes bibliographical references (page 13).



2.

Record Nr.

UNINA9911007281703321

Autore

Campesato Oswald

Titolo

Working With Grep, Sed, and Awk Pocket Primer

Pubbl/distr/stampa

Mercury Learning and Information, 2023

ISBN

9781501518232

1501518232

Edizione

[1st ed.]

Descrizione fisica

1 online resource (265 p.)

Collana

Pocket Primer

Disciplina

5.5200000000

Soggetti

COMPUTERS / Programming Languages / Java

COMPUTERS / Data Processing

COMPUTERS / Databases / Data Mining

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Sommario/riassunto

The goal of this book is to introduce readers to three powerful command line utilities that can be combined to create simple yet powerful shell scripts for performing a multitude of tasks. The code samples and scripts use the bash shell, and typically involve very small text files so that you can focus on understanding the features of grep, sed, and awk. In the simplest terms, grep (global regular expression print) will search input files in data for certain words or word patterns and print the lines that match it. sed is useful for changing or modifying data. Awk is a programming language also used for searching a data file for certain patterns, but can also perform certain tasks on the pattern matches it finds. Aimed at a reader relatively new to working in a bash environment, the book is comprehensive enough to be a good reference and teach a few new tricks to those who already have some experience with these command line utilities.