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Top Forums Shell Programming and Scripting Blog-Thread: Creating a Shell Wrapper and Runtime Modifier (SWARM) Post 303046071 by sea on Wednesday 22nd of April 2020 09:16:18 PM
Old 04-22-2020
Since preparing 'translatable' strings for functions is boring, I thought I'd implement some more functions from TUI.

What does one need, when one wants cross-platform-compatible scripts?
A way to reckognize and differ them of course!
Code:
	swarm.os.desktop() { #
	# Returns the name of the DE/WM or terminal application name
	# Assigned to: $DESKTOP
		$PRINTF '%s\n' "${XDG_CURRENT_DESKTOP:-${DESKTOP_SESSION:-${TERM:-TTY}}}"
	}
	swarm.os.distro() { #
	# Returns the name of the distro
	# Assigned to: $DISTRO
        	# This /etc is not as dynamic as I'd like
        	# but its THE absolute standard - as far as I'm aware
        	if [[ ! -f "/etc/os-release" ]] || ! $GREP -E  ^NAME= "/etc/os-release"  | $SED s,"NAME=","",g >&1 
		then	local e=/etc
			local SF="release version"    # Search For

			local results=$(for a in $SF;do \ls "$e"|"$GREP" "$a";done)
			local resultsFiles=$(for each in $results;do [[ -f "$e/$each" ]] && $PRINTF "$each ";done)

			for each in $resultsFiles
			do      strcat="$($GREP -i ^NAME= $e/$each)"
				[[ -n "$strcat" ]] && break
				strcat="$($GREP -i ^id= $e/$each)"
				[[ -n "$strcat" ]] && break
			done
			$PRINTF "${strcat/*=}"|$SED s,'\"','',g
		fi
	}
	swarm.os.based() { #
	# Returns arch, debian, redhat or unknown
	# Assigned to: $BASED
    		out=""
		if [[ -f /etc/redhat-release ]]
		then	out=redhat
		elif [[ -f /etc/arch-release ]]
		then	out=arch
		elif [[ -f /etc/debian_version ]]
		then	out=debian
		else	out=unknown
			# Do further checking
			# Changes according to: https://github.com/icy/pacapt/blob/ng/pacapt (153-180)
			swarm.util.which cave   1>/dev/null 2>/dev/null && out=exherbo
			swarm.util.which emerge 1>/dev/null 2>/dev/null && out=gentoo
			swarm.util.which port   1>/dev/null 2>/dev/null && out=mac
			swarm.util.which brew   1>/dev/null 2>/dev/null && out=mac
			swarm.util.which zypper 1>/dev/null 2>/dev/null && out=opensuse
			# Not sure if i handle these 2 properly
			swarm.util.which pkg 1>/dev/null 2>/dev/null && out=openbsd
			swarm.util.which pkgng 1>/dev/null 2>/dev/null && out=freebsd
		fi
		builtin echo "$out"
	}
	DISTRO="$(swarm.os.distro)"
	DESKTOP="$(swarm.os.desktop)"
	BASED="$(swarm.os.based)"

If you happen to have any recomended additions or changes, please, let me know so.
Have fun! Smilie

Last edited by sea; 04-23-2020 at 11:50 AM.. Reason: code fix for swarm.os.distro
 

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PARTX(8)						       System Administration							  PARTX(8)

NAME
partx - tell the Linux kernel about the presence and numbering of on-disk partitions SYNOPSIS
partx [-a|-d|-s] [-t TYPE] [-n M:N] [-] disk partx [-a|-d|-s] [-t TYPE] partition [disk] DESCRIPTION
Given a device or disk-image, partx tries to parse the partition table and list its contents. It optionally adds or removes partitions. The disk argument is optional when a partition argument is provided. To force scanning a partition as if it were a whole disk (for example to list nested subpartitions), use the argument "-". For example: partx --show - /dev/sda3 This will see sda3 as a whole-disk rather than a partition. This is not an fdisk program -- adding and removing partitions does not change the disk, it just tells the kernel about the presence and numbering of on-disk partitions. OPTIONS
-a, --add Add the specified partitions, or read the disk and add all partitions. -b, --bytes Print the SIZE column in bytes rather than in human-readable format. -d, --delete Delete the specified partitions or all partitions. -g, --noheadings Do not print a header line. -l, --list List the partitions. Note that all numbers are in 512-byte sectors. This output format is DEPRECATED in favour of --show. Don't use it in newly written scripts. -o, --output list Define the output columns to use for --show and --raw output. If no output arrangement is specified, then a default set is used. Use --help to get list of all supported columns. -r, --raw Use the raw output format. -s, --show List the partitions. All numbers (except SIZE) are in 512-byte sectors. The output columns can be rearranged with the --output option. -t, --type type Specify the partition table type -- aix, bsd, dos, gpt, mac, minix, sgi, solaris_x86, sun, ultrix or unixware. -n, --nr M:N Specify the range of partitions. For backward compatibility also the format <M-N> is supported. The range may contain negative numbers, for example "--nr :-1" means the last partition, and "--nr -2:-1" means the last two partitions. Supported range specifi- cations are: <M> Specifies just one partition (e.g. --nr 3). <M:> Specifies lower limit only (e.g. --nr 2:). <:N> Specifies upper limit only (e.g. --nr :4). <M:N> or <M-N> Specifies lower and upper limits (e.g. --nr 2:4). EXAMPLES
partx --show /dev/sdb3 partx --show --nr 3 /dev/sdb partx --show /dev/sdb3 /dev/sdb All three commands list partition 3 of /dev/sdb. partx --show - /dev/sdb3 Lists all subpartitions on /dev/sdb3 (the device is used as whole-disk). partx -o START -g --nr 3 /dev/sdb Prints the start sector of partition 5 on /dev/sda without header. partx -o SECTORS,SIZE /dev/sda5 /dev/sda Lists the length in sectors and human-readable size of partition 5 on /dev/sda. partx --add --nr 3:5 /dev/sdd Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd. partx -d --nr :-1 /dev/sdd Removes the last partition on /dev/sdd. SEE ALSO
addpart(8), delpart(8), fdisk(8), parted(8), partprobe(8) AUTHORS
Davidlohr Bueso <dave@gnu.org> Karel Zak <kzak@redhat.com> The original version was written by Andries E. Brouwer <aeb@cwi.nl>. AVAILABILITY
The partx command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux February 2011 PARTX(8)
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