writea, reada - write and read gawk arrays to/from files
@load "rwarray" ret = writea(file, array) ret = reada(file, array)
The rwarray extension adds two functions named writea(). and reada(), as follows. writea() This function takes a string argument, which is the name of the file to which dump the array, and the array itself as the second argument. writea() understands multidimensional arrays. It returns one on success, or zero upon failure. reada() is the inverse of writea(); it reads the file named as its first argument, filling in the array named as the second argument. It clears the array first. Here too, the return value is one on success and zero upon failure.
The array created by reada() is identical to that written by writea() in the sense that the contents are the same. However, due to implementation issues, the array traversal order of the recreated array will likely be different from that of the original array. As array traversal order in AWK is by default undefined, this is not (technically) a problem. If you need to guarantee a particular traversal order, use the array sorting features in gawk to do so. The file contains binary data. All integral values are written in network byte order. However, double precision floating-point values are written as native binary data. Thus, arrays containing only string data can theoretically be dumped on systems with one byte order and restored on systems with a different one, but this has not been tried.
@load "rwarray" ... ret = writea("arraydump.bin", array) ... ret = reada("arraydump.bin", array)
GAWK: Effective AWK Programming, filefuncs(3am), fnmatch(3am), fork(3am), inplace(3am), ordchr(3am), readdir(3am), readfile(3am), revoutput(3am), time(3am).
Arnold Robbins, firstname.lastname@example.org.
Copyright 2012, 2013, Free Software Foundation, Inc. Permission is granted to make and distribute verbatim copies of this manual page provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual page under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual page into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Foundation.
More Linux Commands
trace(3ncurses) - curses debugging routines - Linux man page
The trace routines are used for debugging the ncurses libraries, as well as applications which use the ncurses libraries. These functions are normally available
mkfs.ext2(8) - create an ext2/ext3/ext4 filesystem (ManPage)
mke2fs is used to create an ext2, ext3, or ext4 filesystem, usually in a disk partition (or file) named by device. The file system size is specified by fs-size.
David and all the people who followed him went out
all the officers and the royal body-guard and all the men of Ittai the Gittite, the six hundred who had followed him from Gath
mtools(5) - mtools configuration files - Linux manual page
This manual page describes the configuration files for mtools. They are called /etc/mtools.conf and ~/.mtoolsrc. If the environmental variable MTOOLSRC is set,
XML::XPath::Node::PI(3pm) - an XML processing instruction no
new ( target, data ) Create a new PI node. getTarget Returns the target getData Returns the data XML::XPath::Node::PI.3pm ....(Library - Linux manual page)
Tk_InitOptions(3) - process configuration options (ManPage)
These procedures handle most of the details of parsing configuration options such as those for Tk widgets. Given a description of what options are supported, th
s_client(1ssl) - SSL/TLS client program - Linux manual page
The s_client command implements a generic SSL/TLS client which connects to a remote host using SSL/TLS. It is a very useful diagnostic tool for SSL servers. OPT
oldfind(1) search for files in a directory hierarchy........
The oldfind and find programs are functionally identical. The only difference between them is the implementation internals of how the filesystem is searched. Th
ofxdump(1) Dump content of OFX files as human-readable text
ofxdump 0.9.9 ofxdump prints to stdout, in human readable form, everything the library understands about a particular file or response, and sends errors to stde
hciconfig(8) - configure Bluetooth devices - Linux man page
hciconfig.8 - hciconfig is used to configure Bluetooth devices. hciX is the name of a Bluetooth device installed in the system. If hciX is not given, hciconfig
rediff(1) - fix offsets and counts of a hand-edited diff....
rediff.1 - You can use rediff to correct a hand-edited unified diff. Take a copy of the diff you want to edit, and edit it without changing any offsets or count
gai_suspend(3) - asynchronous network address and service tr
The getaddrinfo_a() function performs the same task as getaddrinfo(3), but allows multiple name look-ups to be performed asynchronously, with optional notificat