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SunOS 5.10 - man page for strings (sunos section 1)

strings(1)							   User Commands							strings(1)

strings - find printable strings in an object or binary file
strings [-a | -] [-t format | -o] [-n number | -number] [file...]
The strings utility looks for ASCII strings in a binary file. A string is any sequence of 4 or more printing characters ending with a new- line or a null character. strings is useful for identifying random object files and many other things.
The following options are supported: -a | - Look everywhere in the file for strings. If this flag is omitted, strings only looks in the initialized data space of object files. -n number | -number Use a number as the minimum string length rather than the default, which is 4. -o Equivalent to -t d option. -t format Write each string preceded by its byte offset from the start of the file. The format is dependent on the single character used as the format option-argument: d The offset will be written in decimal. o The offset will be written in octal. x The offset will be written in hexadecimal.
The following operand is supported: file A path name of a regular file to be used as input. If no file operand is specified, the strings utility will read from the stan- dard input.
See environ(5) for descriptions of the following environment variables that affect the execution of strings: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned: 0 Successful completion. >0 An error occurred.
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWtoo | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+
od(1), attributes(5), environ(5), standards(5)
The algorithm for identifying strings is extremely primitive. For backwards compatibility, the options -a and - are interchangeable. SunOS 5.10 20 Dec 1996 strings(1)