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e81d4d96 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 $*"; } | |
8 | writeArg(){ | |
9 | # Desc: Writes first argument with subsequent arguments as options | |
10 | # Usage: writeArg "$(echo "Data to be written.")" [output path] ([cmd1] [cmd2] [cmd3] [cmd4]...) | |
11 | # Input: arg1: data to be written | |
12 | # arg2: output path | |
13 | # arg3+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ") | |
14 | # Output: file written to disk | |
15 | # Example: decrypt multiple large files in parallel | |
16 | # writeArg "$(cat /tmp/largefile1.gpg)" /tmp/largefile1 "gpg --decrypt" & | |
17 | # writeArg "$(cat /tmp/largefile2.gpg)" /tmp/largefile2 "gpg --decrypt" & | |
18 | # writeArg "$(cat /tmp/largefile3.gpg)" /tmp/largefile3 "gpg --decrypt" & | |
19 | # Depends: bash 5 | |
20 | ||
21 | # Set command strings | |
22 | if ! [ -z "$3" ]; then CMD1="$3"; else CMD1="tee /dev/null "; fi # command string 1 | |
23 | if ! [ -z "$4" ]; then CMD2="$4"; else CMD2="tee /dev/null "; fi # command string 2 | |
24 | if ! [ -z "$5" ]; then CMD3="$5"; else CMD3="tee /dev/null "; fi # command string 3 | |
25 | if ! [ -z "$6" ]; then CMD4="$6"; else CMD4="tee /dev/null "; fi # command string 4 | |
26 | ||
27 | # Debug | |
28 | yell "CMD1:$CMD1" | |
29 | yell "CMD2:$CMD2" | |
30 | yell "CMD3:$CMD3" | |
31 | yell "CMD4:$CMD4" | |
32 | # Write | |
33 | echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$2"; | |
34 | ||
32472039 | 35 | } # Write Bash var to file |
e81d4d96 SBS |
36 | |
37 | #==BEGIN sample code== | |
38 | myFile="/tmp/$(date +%s)..original" | |
39 | echo "how are you doing?" > "$myFile" | |
40 | myVAR="$(cat $myFile)" | |
41 | writeArg "$myVAR" "$myFile..LOUD_CHILD" "tee /tmp/cloneityclone " "tr '[:lower:]' '[:upper:]'" | |
42 | #==END sample code== | |
43 | ||
44 | # Author: Steven Baltakatei Sandoval | |
45 | # License: GPLv3+ |