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Alexander Kapshuk 2ca46ed207 ver_linux: Assign constant RE to variable name for clarity

The regular expression that matches the version number of a utility
being queried is used as a constant expression in the current
implementation. Assigning the RE in question to a variable gives it a
meaningful name that clearly expresses the intended use of the expression
without having to think about the details of implementation.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-22 13:34:35 +01:00

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#!/usr/bin/awk -f

SPDX-License-Identifier: GPL-2.0

Before running this script please ensure that your PATH is

typical as you use for compilation/installation. I use

/bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may

differ on your system.

BEGIN { usage = "If some fields are empty or look unusual you may have an old version.\n" usage = usage "Compare to the current minimal requirements in Documentation/Changes.\n" print usage

system("uname -a")
printf("\n")

vernum = "[0-9]+([.]?[0-9]+)+"

printversion("GNU C", version("gcc -dumpversion"))
printversion("GNU Make", version("make --version"))
printversion("Binutils", version("ld -v"))
printversion("Util-linux", version("mount --version"))
printversion("Mount", version("mount --version"))
printversion("Module-init-tools", version("depmod -V"))
printversion("E2fsprogs", version("tune2fs"))
printversion("Jfsutils", version("fsck.jfs -V"))
printversion("Reiserfsprogs", version("reiserfsck -V"))
printversion("Reiser4fsprogs", version("fsck.reiser4 -V"))
printversion("Xfsprogs", version("xfs_db -V"))
printversion("Pcmciautils", version("pccardctl -V"))
printversion("Pcmcia-cs", version("cardmgr -V"))
printversion("Quota-tools", version("quota -V"))
printversion("PPP", version("pppd --version"))
printversion("Isdn4k-utils", version("isdnctrl"))
printversion("Nfs-utils", version("showmount --version"))

while (getline <"/proc/self/maps" > 0) {
	if (/libc.*\.so$/) {
		n = split($0, procmaps, "/")
		if (match(procmaps[n], vernum)) {
			ver = substr(procmaps[n], RSTART, RLENGTH)
			printversion("Linux C Library", ver)
			break
		}
	}
}

printversion("Dynamic linker (ldd)", version("ldd --version"))

while ("ldconfig -p 2>/dev/null" | getline > 0) {
	if (/(libg|stdc)[+]+\.so/) {
		libcpp = $NF
		break
	}
}
printversion("Linux C++ Library", version("readlink " libcpp))
printversion("Procps", version("ps --version"))
printversion("Net-tools", version("ifconfig --version"))
printversion("Kbd", version("loadkeys -V"))
printversion("Console-tools", version("loadkeys -V"))
printversion("Oprofile", version("oprofiled --version"))
printversion("Sh-utils", version("expr --v"))
printversion("Udev", version("udevadm --version"))
printversion("Wireless-tools", version("iwconfig --version"))

while ("sort /proc/modules" | getline > 0) {
	mods = mods sep $1
	sep = " "
}
printversion("Modules Loaded", mods)

}

function version(cmd, ver) { cmd = cmd " 2>&1" while (cmd | getline > 0) { if (match($0, vernum)) { ver = substr($0, RSTART, RLENGTH) break } } close(cmd) return ver }

function printversion(name, value, ofmt) { if (value != "") { ofmt = "%-20s\t%s\n" printf(ofmt, name, value) } }

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