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diff --git a/man-pages-posix-2013/man1p/strings.1p b/man-pages-posix-2013/man1p/strings.1p new file mode 100644 index 0000000..eaaaf0b --- /dev/null +++ b/man-pages-posix-2013/man1p/strings.1p @@ -0,0 +1,244 @@ +'\" et +.TH STRINGS "1P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. + +.SH NAME +strings +\(em find printable strings in files +.SH SYNOPSIS +.LP +.nf +strings \fB[\fR\(mia\fB] [\fR\(mit \fIformat\fB] [\fR\(min \fInumber\fB] [\fIfile\fR...\fB]\fR +.fi +.SH DESCRIPTION +The +.IR strings +utility shall look for printable strings in regular files and shall +write those strings to standard output. A printable string is any +sequence of four (by default) or more printable characters terminated +by a +<newline> +or NUL character. Additional implementation-defined strings may be +written; see +.IR localedef . +.P +If the first argument is +.BR '\(mi' , +the results are unspecified. +.SH OPTIONS +The +.IR strings +utility shall conform to the Base Definitions volume of POSIX.1\(hy2008, +.IR "Section 12.2" ", " "Utility Syntax Guidelines", +except for the unspecified usage of +.BR '\(mi' . +.P +The following options shall be supported: +.IP "\fB\(mia\fP" 10 +Scan files in their entirety. If +.BR \(mia +is not specified, it is implementation-defined what portion of each +file is scanned for strings. +.IP "\fB\(min\ \fInumber\fR" 10 +Specify the minimum string length, where the +.IR number +argument is a positive decimal integer. The default shall be 4. +.IP "\fB\(mit\ \fIformat\fR" 10 +Write each string preceded by its byte offset from the start of the +file. The format shall be dependent on the single character used as +the +.IR format +option-argument: +.RS 10 +.IP "\fRd\fR" 6 +The offset shall be written in decimal. +.IP "\fRo\fR" 6 +The offset shall be written in octal. +.IP "\fRx\fR" 6 +The offset shall be written in hexadecimal. +.RE +.SH OPERANDS +The following operand shall be supported: +.IP "\fIfile\fR" 10 +A pathname of a regular file to be used as input. If no +.IR file +operand is specified, the +.IR strings +utility shall read from the standard input. +.SH STDIN +See the INPUT FILES section. +.SH "INPUT FILES" +The input files named by the utility arguments or the standard input +shall be regular files of any format. +.SH "ENVIRONMENT VARIABLES" +The following environment variables shall affect the execution of +.IR strings : +.IP "\fILANG\fP" 10 +Provide a default value for the internationalization variables that are +unset or null. (See the Base Definitions volume of POSIX.1\(hy2008, +.IR "Section 8.2" ", " "Internationalization Variables" +for the precedence of internationalization variables used to determine +the values of locale categories.) +.IP "\fILC_ALL\fP" 10 +If set to a non-empty string value, override the values of all the +other internationalization variables. +.IP "\fILC_CTYPE\fP" 10 +Determine the locale for the interpretation of sequences of bytes of +text data as characters (for example, single-byte as opposed to +multi-byte characters in arguments and input files) and to identify +printable strings. +.IP "\fILC_MESSAGES\fP" 10 +.br +Determine the locale that should be used to affect the format and +contents of diagnostic messages written to standard error. +.IP "\fINLSPATH\fP" 10 +Determine the location of message catalogs for the processing of +.IR LC_MESSAGES . +.SH "ASYNCHRONOUS EVENTS" +Default. +.SH STDOUT +Strings found shall be written to the standard output, one per line. +.P +When the +.BR \(mit +option is not specified, the format of the output shall be: +.sp +.RS 4 +.nf +\fB +"%s", <\fIstring\fR> +.fi \fR +.P +.RE +.P +With the +.BR "\(mit\ o" +option, the format of the output shall be: +.sp +.RS 4 +.nf +\fB +"%o %s", <\fIbyte offset\fR>, <\fIstring\fR> +.fi \fR +.P +.RE +.P +With the +.BR "\(mit\ x" +option, the format of the output shall be: +.sp +.RS 4 +.nf +\fB +"%x %s", <\fIbyte offset\fR>, <\fIstring\fR> +.fi \fR +.P +.RE +.P +With the +.BR "\(mit\ d" +option, the format of the output shall be: +.sp +.RS 4 +.nf +\fB +"%d %s", <\fIbyte offset\fR>, <\fIstring\fR> +.fi \fR +.P +.RE +.SH STDERR +The standard error shall be used only for diagnostic messages. +.SH "OUTPUT FILES" +None. +.SH "EXTENDED DESCRIPTION" +None. +.SH "EXIT STATUS" +The following exit values shall be returned: +.IP "\00" 6 +Successful completion. +.IP >0 6 +An error occurred. +.SH "CONSEQUENCES OF ERRORS" +Default. +.LP +.IR "The following sections are informative." +.SH "APPLICATION USAGE" +By default the data area (as opposed to the text, ``bss'', or header +areas) of a binary executable file is scanned. Implementations +document which areas are scanned. +.P +Some historical implementations do not require NUL or +<newline> +terminators for strings to permit those languages that do not use NUL +as a string terminator to have their strings written. +.SH EXAMPLES +None. +.SH RATIONALE +Apart from rationalizing the option syntax and slight difficulties with +object and executable binary files, +.IR strings +is specified to match historical practice closely. The +.BR \(mia +and +.BR \(min +options were introduced to replace the non-conforming +.BR \(mi +and +.BR \(mi \c +.IR number +options. These options are no longer specified by POSIX.1\(hy2008 but +may be present in some implementations. +.P +The +.BR \(mio +option historically means different things on different +implementations. Some use it to mean ``\c +.IR offset +in decimal'', while others use it as ``\c +.IR offset +in octal''. Instead of trying to decide which way would be least +objectionable, the +.BR \(mit +option was added. It was originally named +.BR \(miO +to mean ``offset'', but was changed to +.BR \(mit +to be consistent with +.IR od . +.P +The ISO\ C standard function +\fIisprint\fR() +is restricted to a domain of +.BR "unsigned char" . +This volume of POSIX.1\(hy2008 requires implementations to write strings as defined by the +current locale. +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "\fIlocaledef\fR\^", +.IR "\fInm\fR\^" +.P +The Base Definitions volume of POSIX.1\(hy2008, +.IR "Chapter 8" ", " "Environment Variables", +.IR "Section 12.2" ", " "Utility Syntax Guidelines" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, Copyright (C) 2013 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the +event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.unix.org/online.html . + +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |