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recordio(1) [osx man page]

recordio(1)						      General Commands Manual						       recordio(1)

NAME
recordio - record the input and output of a program SYNTAX
recordio program [ arg ... ] DESCRIPTION
recordio runs program with the given arguments. It prints lines to stderr showing the input and output of program. At the beginning of each line on stderr, recordio inserts the program process ID, along with < for input or > for output. At the end of each line it inserts a space, a plus sign, or [EOF]; a space indicates that there was a newline in the input or output, and [EOF] indicates the end of input or output. recordio prints every packet of input and output immediately. It does not attempt to combine packets into coherent stderr lines. For example, recordio sh -c 'cat /dev/fd/8 2>&1' > /dev/null could produce 5135 > cat: /dev/fd/8: Bad file descriptor 5135 > [EOF] or 5135 > cat: + 5135 > /dev/fd/8+ 5135 > : + 5135 > Bad file descriptor 5135 > [EOF] recordio uses several lines for long packets to guarantee that each line is printed atomically to stderr. recordio runs as a child of program. It exits when it sees the end of program's output. SEE ALSO
tcpserver(1) recordio(1)

Check Out this Related Man Page

CAT(1)							      General Commands Manual							    CAT(1)

NAME
cat, read, nobs - catenate files SYNOPSIS
cat [ file ... ] read [ -m ] [ -n nline ] [ file ... ] nobs [ file ... ] DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus cat file prints a file and cat file1 file2 >file3 concatenates the first two files and places the result on the third. If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input. Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts. The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines. Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a- time data. It never reads any more data from the input than it prints to the output. Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window. SOURCE
/src/cmd/cat.c /src/cmd/read.c /bin/nobs SEE ALSO
cp(1) DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines. BUGS
Beware of and which destroy input files before reading them. CAT(1)
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