From 0b1c99ffb1c3019e8afb9dcc542fbc5e868baef1 Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Tue, 16 Aug 2016 18:38:49 +1200
Subject: Template traps in scripts depending on mktd(1)

---
 bin/try | 77 -----------------------------------------------------------------
 1 file changed, 77 deletions(-)
 delete mode 100755 bin/try

(limited to 'bin/try')

diff --git a/bin/try b/bin/try
deleted file mode 100755
index f0ba317d..00000000
--- a/bin/try
+++ /dev/null
@@ -1,77 +0,0 @@
-#!/bin/sh
-# Attempt a certain number of times to perform a task, buffer stderr unless and
-# until all command attempts fail
-self=try
-
-# Parse options
-while getopts 's:n:' opt ; do
-    case $opt in
-        n)
-            attn=$OPTARG
-            ;;
-        s)
-            sleep=$OPTARG
-            ;;
-        \?)
-            printf >&2 '%s: Unknown option\n' "$self"
-            exit 2
-            ;;
-    esac
-done
-shift "$((OPTIND-1))"
-
-# Check we have at least one argument left (the command to run)
-if [ "$#" -eq 0 ] ; then
-    printf >&2 '%s: Need a command to run\n' "$self"
-    exit 2
-fi
-
-# Create a buffer file for the error output, and clean up the file when we exit
-td=
-cleanup() {
-    [ -n "$td" ] && rm -fr -- "$td"
-    if [ "$1" != EXIT ] ; then
-        trap - "$1"
-        kill "-$1" "$$"
-    fi
-}
-for sig in EXIT HUP INT TERM ; do
-    # shellcheck disable=SC2064
-    trap "cleanup $sig" "$sig"
-done
-td=$(mktd "$self") || exit
-errbuff=$td/errbuff
-
-# Open a filehandle to the error buffer, just to save on file operations
-exec 3>"$errbuff"
-
-# Keep trying the command, writing error output to the buffer file, and exit
-# if we succeed on any of them
-attc=1
-: "${attn:=3}" "${sleep:=0}"
-while [ "$attc" -le "$attn" ] ; do
-
-    # Try running the command; if it succeeds, we're done, and any previous
-    # failures get their errors discarded
-    if "$@" 2>&3 ; then
-        exit
-
-    # If the command failed, record the exit value
-    else
-        ex=$?
-    fi
-
-    # If this isn't the last run, have a sleep
-    if [ "$attc" -lt "$attn" ] ; then
-        sleep "${sleep:=0}"
-    fi
-
-    # Increment the attempt count
-    attc=$((attc + 1))
-done
-
-# Attempts were exhausted, and all failed; print the error output from all of
-# the failures and exit with the non-zero exit value of the most recent one
-exec 3>&-
-cat -- "$td"/errbuff >&2
-exit "$ex"
-- 
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