Typing Variables

Declare weakly typed variables declare is an internal command of bash. (internal command use help for displaying “manpage”). It is used to show and define variables or show function bodies. …

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Co-Processes

Hello World # create the co-process coproc bash # send a command to it (echo a) echo 'echo Hello World' >&"${COPROC[1]}" # read a line from its output read line …

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Type of Shells

Start an interactive shell bash Detect type of shell shopt -q login_shell && echo 'login' || echo 'not-login' Introduction to dot files In Unix, files and directories beginning with a …

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Word Splitting

Parameter Details IFS Internal field separator-x Print commands and their arguments as they are executed (Shell option) What, when and Why? When the shell performs parameter expansion, command substitution, variable …

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