OLDPWD

OLDPWD (OLDPrintWorkingDirectory) contains directory before the last cd command:

~> $ cd directory
directory> $ echo $OLDPWD
/home/user

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Internal variables:

*Internal variables

*Bash internal variables at a glance

*PWD

*IFS

*OLDPWD

*UID

Table Of Contents

0Getting started

1Using trap to react to signals and system events

10Bash Parameter Expansion

11Sourcing

12Find

13Here documents and here strings

14Quoting

15Conditional Expressions

16Scripting with parameters

17History substitutions

18Math

19Scoping

20Process substitution

21Programmable completion

22Customizing PS1

23Brace Expansion

24Bash Arithmetic

25getopts smart positional-parameter parsing

26Debugging

27Pitfalls

28Script shebang

29Pattern matching and regular expressions

33Internal variables

38File transfer with scp

39Pipelines

40Managing PATH environment variable

41Avoiding date using printf

42Chain of commands and operations

43Type of shells

44true, false and commands

45Color script output cross-platform

46Navigating directories

51Jobs at specific types

52Associative arrays

53Handling the system prompt

54Creating directories

55File execution sequence

60Global and local variables

65Networking with bash

66Parallel

67Grep

68Strace

69Sleep

70Decodi

71Contributors