Browsing Hungarian translation

549.

Execute conditional command.

Returns a status of 0 or 1 depending on the evaluation of the conditional
expression EXPRESSION. Expressions are composed of the same primaries used
by the `test' builtin, and may be combined using the following operators:

( EXPRESSION )[tab]Returns the value of EXPRESSION
! EXPRESSION[tab][tab]True if EXPRESSION is false; else false
EXPR1 && EXPR2[tab]True if both EXPR1 and EXPR2 are true; else false
EXPR1 || EXPR2[tab]True if either EXPR1 or EXPR2 is true; else false

When the `==' and `!=' operators are used, the string to the right of
the operator is used as a pattern and pattern matching is performed.
When the `=~' operator is used, the string to the right of the operator
is matched as a regular expression.

The && and || operators do not evaluate EXPR2 if EXPR1 is sufficient to
determine the expression's value.

Exit Status:
0 or 1 depending on value of EXPRESSION.

550.

Common shell variable names and usage.

BASH_VERSION[tab]Version information for this Bash.
CDPATH[tab]A colon-separated list of directories to search
[tab][tab]for directories given as arguments to `cd'.
GLOBIGNORE[tab]A colon-separated list of patterns describing filenames to
[tab][tab]be ignored by pathname expansion.
HISTFILE[tab]The name of the file where your command history is stored.
HISTFILESIZE[tab]The maximum number of lines this file can contain.
HISTSIZE[tab]The maximum number of history lines that a running
[tab][tab]shell can access.
HOME[tab]The complete pathname to your login directory.
HOSTNAME[tab]The name of the current host.
HOSTTYPE[tab]The type of CPU this version of Bash is running under.
IGNOREEOF[tab]Controls the action of the shell on receipt of an EOF
[tab][tab]character as the sole input. If set, then the value
[tab][tab]of it is the number of EOF characters that can be seen
[tab][tab]in a row on an empty line before the shell will exit
[tab][tab](default 10). When unset, EOF signifies the end of input.
MACHTYPE[tab]A string describing the current system Bash is running on.
MAILCHECK[tab]How often, in seconds, Bash checks for new mail.
MAILPATH[tab]A colon-separated list of filenames which Bash checks
[tab][tab]for new mail.
OSTYPE[tab]The version of Unix this version of Bash is running on.
PATH[tab]A colon-separated list of directories to search when
[tab][tab]looking for commands.
PROMPT_COMMAND[tab]A command to be executed before the printing of each
[tab][tab]primary prompt.
PS1[tab][tab]The primary prompt string.
PS2[tab][tab]The secondary prompt string.
PWD[tab][tab]The full pathname of the current directory.
SHELLOPTS[tab]A colon-separated list of enabled shell options.
TERM[tab]The name of the current terminal type.
TIMEFORMAT[tab]The output format for timing statistics displayed by the
[tab][tab]`time' reserved word.
auto_resume[tab]Non-null means a command word appearing on a line by
[tab][tab]itself is first looked for in the list of currently
[tab][tab]stopped jobs. If found there, that job is foregrounded.
[tab][tab]A value of `exact' means that the command word must
[tab][tab]exactly match a command in the list of stopped jobs. A
[tab][tab]value of `substring' means that the command word must
[tab][tab]match a substring of the job. Any other value means that
[tab][tab]the command must be a prefix of a stopped job.
histchars[tab]Characters controlling history expansion and quick
[tab][tab]substitution. The first character is the history
[tab][tab]substitution character, usually `!'. The second is
[tab][tab]the `quick substitution' character, usually `^'. The
[tab][tab]third is the `history comment' character, usually `#'.
HISTIGNORE[tab]A colon-separated list of patterns used to decide which
[tab][tab]commands should be saved on the history list.

554.

Set and unset shell options.

Change the setting of each shell option OPTNAME. Without any option
arguments, list all shell options with an indication of whether or not each
is set.

Options:
-o[tab]restrict OPTNAMEs to those defined for use with `set -o'
-p[tab]print each shell option with an indication of its status
-q[tab]suppress output
-s[tab]enable (set) each OPTNAME
-u[tab]disable (unset) each OPTNAME

Exit Status:
Returns success if OPTNAME is enabled; fails if an invalid option is
given or OPTNAME is disabled.

557.

Display possible completions depending on the options.

Intended to be used from within a shell function generating possible
completions. If the optional WORD argument is supplied, matches against
WORD are generated.

Exit Status:
Returns success unless an invalid option is supplied or an error occurs.

560.

Read lines from a file into an array variable.

A synonym for `mapfile'.