| 1 | Special Variables
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| 2 |
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| 3 | [Shell Vars] IFS X LANG X GLOBIGNORE
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| 4 | [Shell Options] SHELLOPTS X BASHOPTS
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| 5 | [Other Env] HOME PATH
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| 6 | [POSIX Special] $@ $* $# $? $- $$ $! $0 $9
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| 7 | [Other Special] BASH_REMATCH @PIPESTATUS
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| 8 | [Platform] HOSTNAME OSTYPE
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| 9 | [Call Stack] @BASH_SOURCE @FUNCNAME @BASH_LINENO
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| 10 | X @BASH_ARGV X @BASH_ARGC
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| 11 | [Tracing] LINENO
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| 12 | [Process State] X BASHPID X PPID UID EUID
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| 13 | X [Process Stack] BASH_SUBSHELL SHLVL
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| 14 | X [Shell State] BASH_CMDS @DIRSTACK
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| 15 | [Completion] @COMP_WORDS COMP_CWORD COMP_LINE COMP_POINT
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| 16 | COMP_WORDBREAKS @COMPREPLY X COMP_KEY
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| 17 | X COMP_TYPE COMP_ARGV
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| 18 | [History] HISTFILE
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| 19 | [cd] PWD OLDPWD X CDPATH
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| 20 | [getopts] OPTIND OPTARG X OPTERR
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| 21 | [read] REPLY
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| 22 | [Functions] X RANDOM X SECONDS
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