+++ /dev/null
-#!/bin/bash
-# Desc: Append [processed] file to tar
-
-yell() { echo "$0: $*" >&2; } # Yell, Die, Try Three-Fingered Claw technique; # Ref/Attrib: https://stackoverflow.com/a/25515370
-die() { yell "$*"; exit 111; }
-try() { "$@" || die "cannot $*"; }
-appendFileTar(){
- # Desc: Appends [processed] file to tar
- # Usage: appendFileTar [file path] [name of file to be inserted] [tar path] [temp dir] ([process cmd])
- # Version: 2.0.1
- # Input: arg1: path of file to be (processed and) written
- # arg2: name to use for file inserted into tar
- # arg3: tar archive path (must exist first)
- # arg4: temporary working dir
- # arg5: (optional) command string to process file (ex: "gpsbabel -i nmea -f - -o kml -F - ")
- # Output: file written to disk
- # Example: decrypt multiple large files in parallel
- # appendFileTar /tmp/largefile1.gpg "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" &
- # appendFileTar /tmp/largefile2.gpg "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" &
- # appendFileTar /tmp/largefile3.gpg "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" &
- # Depends: bash 5.0.3, tar 1.30, cat 8.30, yell()
- local fn fileName tarPath tmpDir
-
- # Save function name
- fn="${FUNCNAME[0]}";
- #yell "DEBUG:STATUS:$fn:Started appendFileTar()."
-
- # Set file name
- if ! [ -z "$2" ]; then fileName="$2"; else yell "ERROR:$fn:Not enough arguments."; exit 1; fi
- # Check tar path is a file
- if [ -f "$3" ]; then tarPath="$3"; else yell "ERROR:$fn:Tar archive arg not a file:$3"; exit 1; fi
- # Check temp dir arg
- if ! [ -z "$4" ]; then tmpDir="$4"; else yell "ERROR:$fn:No temporary working dir set."; exit 1; fi
- # Set command strings
- if ! [ -z "$5" ]; then cmd1="$5"; else cmd1="cat "; fi # command string
-
- # Input command string
- cmd0="cat \"\$1\"";
-
- # Write to temporary working dir
- eval "$cmd0 | $cmd1" > "$tmpDir"/"$fileName";
-
- # Append to tar
- try tar --append --directory="$tmpDir" --file="$tarPath" "$fileName";
- #yell "DEBUG:STATUS:$fn:Finished appendFileTar()."
-} # Append [processed] file to Tar archive
-
-#==BEGIN sample code==
-myTar="/tmp/$(date +%s).tar";
-myTmpDir="/dev/shm";
-try tar --create --file="$myTar" --files-from=/dev/null ;
-myFile="/tmp/$(date +%s)..original";
-echo "how are you doing?" > "$myFile";
-appendFileTar "$myFile" "$(date +%s)..LOUD_insidetar" "$myTar" "$myTmpDir" "tee /tmp/$(date +%s)..outsidetar | tr '[:lower:]' '[:upper:]'" && \
- echo "Inserted a processed version of $myFile into $myTar using temp dir $myTmpDir ";
-#==END sample code==
-
-# Author: Steven Baltakatei Sandoval
-# License: GPLv3+