try() { "$@" || die "cannot $*"; }
appendArgTar(){
# Desc: Writes first argument to temporary file with arguments as options, then appends file to tar
- # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
- # Version: 1.0.0
+ # Usage: appendArgTar "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+ # Version: 1.0.4
# Input: arg1: data to be written
# arg2: file name of file to be inserted into tar
# arg3: tar archive path (must exist first)
# appendArgTar "$(cat /tmp/largefile2.gpg)" "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" &
# appendArgTar "$(cat /tmp/largefile3.gpg)" "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" &
# Depends: bash 5
+ # Ref/Attrib: Using 'eval' to construct command strings https://askubuntu.com/a/476533
# Save function name
local FN="${FUNCNAME[0]}";
if ! [ -z "$7" ]; then CMD3="$7"; else CMD3="tee /dev/null "; fi # command string 3
if ! [ -z "$8" ]; then CMD4="$8"; else CMD4="tee /dev/null "; fi # command string 4
+ # Input command
+ CMD0="echo \"\$1\""
+
# # Debug
+ # yell "DEBUG:STATUS:$FN:CMD0:$CMD0"
# yell "DEBUG:STATUS:$FN:CMD1:$CMD1"
# yell "DEBUG:STATUS:$FN:CMD2:$CMD2"
# yell "DEBUG:STATUS:$FN:CMD3:$CMD3"
# yell "DEBUG:STATUS:$FN:TMP_DIR:$TMP_DIR"
# Write to temporary working dir
- echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME";
+ eval "$CMD0 | $CMD1 | $CMD2 | $CMD3 | $CMD4" > "$TMP_DIR"/"$FILENAME";
# Append to tar
try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
} # Append Bash var to file appended to Tar archive
#==BEGIN sample code==
-myFile="/tmp/$(date +%s)..original"
-echo "how are you doing?" > "$myFile"
-myVAR="$(cat "$myFile")"
-writeArg "$myVAR" "$myFile..LOUD_CHILD" "tee /tmp/cloneityclone " "tr '[:lower:]' '[:upper:]'"
+myTar="/tmp/$(date +%s).tar";
+try tar --create --file="$myTar" --files-from=/dev/null ;
+myVar="how are you doing?"
+appendArgTar "$myVar" "$(date +%s)..LOUD_insidetar" "$myTar" "/dev/shm" "tee /tmp/$(date +%s)..outsidetar " "tr '[:lower:]' '[:upper:]'"
#==END sample code==
# Author: Steven Baltakatei Sandoval