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0f8ac166 SBS |
1 | #!/bin/bash |
2 | ||
3 | # Desc: Template function to write data supplied as argument | |
4 | ||
5 | yell() { echo "$0: $*" >&2; } # Yell, Die, Try Three-Fingered Claw technique; # Ref/Attrib: https://stackoverflow.com/a/25515370 | |
6 | die() { yell "$*"; exit 111; } | |
7 | try() { "$@" || die "cannot $*"; } | |
8 | appendArgTar(){ | |
9 | # Desc: Writes first argument to temporary file with arguments as options, then appends file to tar | |
10 | # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...) | |
4dad1c36 | 11 | # Version: 1.0.0 |
0f8ac166 SBS |
12 | # Input: arg1: data to be written |
13 | # arg2: file name of file to be inserted into tar | |
14 | # arg3: tar archive path (must exist first) | |
15 | # arg4: temporary working dir | |
16 | # arg5+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ") | |
17 | # Output: file written to disk | |
18 | # Example: decrypt multiple large files in parallel | |
19 | # appendArgTar "$(cat /tmp/largefile1.gpg)" "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" & | |
20 | # appendArgTar "$(cat /tmp/largefile2.gpg)" "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" & | |
21 | # appendArgTar "$(cat /tmp/largefile3.gpg)" "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" & | |
0f8ac166 SBS |
22 | # Depends: bash 5 |
23 | ||
4dad1c36 SBS |
24 | # Save function name |
25 | local FN="${FUNCNAME[0]}"; | |
26 | #yell "DEBUG:STATUS:$FN:Finished appendArgTar()." | |
27 | ||
0f8ac166 | 28 | # Set file name |
4dad1c36 | 29 | if ! [ -z "$2" ]; then FILENAME="$2"; else yell "ERROR:$FN:Not enough arguments."; exit 1; fi |
0f8ac166 SBS |
30 | |
31 | # Check tar path is a file | |
4dad1c36 | 32 | if [ -f "$3" ]; then TAR_PATH="$3"; else yell "ERROR:$FN:Tar archive arg not a file."; exit 1; fi |
0f8ac166 SBS |
33 | |
34 | # Check temp dir arg | |
4dad1c36 | 35 | if ! [ -z "$4" ]; then TMP_DIR="$4"; else yell "ERROR:$FN:No temporary working dir set."; exit 1; fi |
0f8ac166 SBS |
36 | |
37 | # Set command strings | |
38 | if ! [ -z "$5" ]; then CMD1="$5"; else CMD1="tee /dev/null "; fi # command string 1 | |
39 | if ! [ -z "$6" ]; then CMD2="$6"; else CMD2="tee /dev/null "; fi # command string 2 | |
40 | if ! [ -z "$7" ]; then CMD3="$7"; else CMD3="tee /dev/null "; fi # command string 3 | |
41 | if ! [ -z "$8" ]; then CMD4="$8"; else CMD4="tee /dev/null "; fi # command string 4 | |
42 | ||
4dad1c36 SBS |
43 | # # Debug |
44 | # yell "DEBUG:STATUS:$FN:CMD1:$CMD1" | |
45 | # yell "DEBUG:STATUS:$FN:CMD2:$CMD2" | |
46 | # yell "DEBUG:STATUS:$FN:CMD3:$CMD3" | |
47 | # yell "DEBUG:STATUS:$FN:CMD4:$CMD4" | |
48 | # yell "DEBUG:STATUS:$FN:FILENAME:$FILENAME" | |
49 | # yell "DEBUG:STATUS:$FN:TAR_PATH:$TAR_PATH" | |
50 | # yell "DEBUG:STATUS:$FN:TMP_DIR:$TMP_DIR" | |
51 | ||
0f8ac166 SBS |
52 | # Write to temporary working dir |
53 | echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME"; | |
54 | ||
55 | # Append to tar | |
56 | try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME"; | |
4dad1c36 | 57 | #yell "DEBUG:STATUS:$FN:Finished appendArgTar()." |
0f8ac166 SBS |
58 | } # Append Bash var to file appended to Tar archive |
59 | ||
60 | #==BEGIN sample code== | |
61 | myFile="/tmp/$(date +%s)..original" | |
62 | echo "how are you doing?" > "$myFile" | |
4dad1c36 | 63 | myVAR="$(cat "$myFile")" |
0f8ac166 SBS |
64 | writeArg "$myVAR" "$myFile..LOUD_CHILD" "tee /tmp/cloneityclone " "tr '[:lower:]' '[:upper:]'" |
65 | #==END sample code== | |
66 | ||
67 | # Author: Steven Baltakatei Sandoval | |
68 | # License: GPLv3+ |