hilbix

# Redirect lines of stdin/stdout to some other function
# outfn and errfn get following arguments
# "cmd args.." "one line full of output"
: catch outfn errfn cmd args..
catch()
{
local ret o1 o2 tmp
tmp=$(mktemp "catch_XXXXXXX.tmp")
mkfifo "$tmp.out"
mkfifo "$tmp.err"

hilbix

#!/bin/bash

avcheck()
{
avprobe "$1" -show_packets 2>/dev/null |
awk -F'=' -vN="$1" '
/^\[/	{ if (arm && k["codec_type"]=="video") { last=k["dts_time"]; # printf "%s", k["flags"];
	}; delete k; arm=1; next; }
arm	{ k[$1]=$2; }
$0=="codec_type=video" { frames++; }

hilbix

#!/bin/bash
#
# A slightly more secure variant of this script.
# It should be secure against primitive attacks like: 
json2bash <<<'{" ":{"; rm -rf /; ":1}}'
#
# However processing JSON from untrustworthy sources still can confuse your script!
# YOU HAVE BEEN WARNED!

# Following needs bash.  Use like in:

hilbix

Add following to your .bashrc:

__git_ps1() { setsid -w /bin/bash -c 'sleep 1 & . /usr/lib/git-core/git-sh-prompt && __git_ps1 "$@" & wait -n; p=$(/usr/bin/ps --no-headers -opgrp $$) && [ $$ = ${p:-x} ] && /usr/bin/kill -9 0; echo "PGRP mismatch $$ $p" >&2' bash "$@"; }

1s usually is enough for local files which are in cache on modern machines, but does not delays the shell prompt too much in case network share need a bit longer.

Note: Due to timeout killing git this may leave .lock-files in your .git directory, which is a bit annoying, as git bails out if it sees such .lock when altering a .git repo. However git tells the lockfile positions and you then can(must) manually rm them. You can improve this by setting GIT_PS1_xxxx variables such, that git needs no locking when evaluating the $PS1. However I am not completely sure which options causes this issue or not. YMMV.

hilbix

#!/bin/bash
#
# Locking example for on how to synchronize background processes.
# Here is what this is for:
# producer() { a=2; echo hello world; return 1; }
# consumer() { a=3; sleep 1; cat; return 2; }
# a=1; producer | consumer   ; echo a=$a # gives hello world; a=1
# a=1; producer > >(consumer); echo a=$a # gives a=2; hello world
# a=1; consumer < <(producer); echo a=$a # gives hello world; a=3
# As seen the a=2 output case is a bit asynchronous/race conditioned.

hilbix

#!/bin/bash
# This Works is placed under the terms of the Copyright Less License,
# see file COPYRIGHT.CLL.  USE AT OWN RISK, ABSOLUTELY NO WARRANTY. 
#
# COPYRIGHT.CLL can be found at http://permalink.de/tino/cll
# (CLL is CC0 as long as not covered by any Copyright)

OOPS() { echo "OOPS: $*" >&2; exit 23; }

[ -z "`pidof openssl`" ] || OOPS "openssl running, consider: killall openssl"

hilbix

Copyright Less License

=== Licensing terms ===

The Author is German or releasing under German law in the European 
Union, therefor the German Urheberrecht applies to the Works (Source 
Code, Text, Program, etc.).

Under German Urheberrecht the Author did not add any Copyright to the 
Works and thereby placed the Works into the Public Domain (PD) as long 

hilbix

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

hilbix

# Following remembers possible agent connections,
# switches to some still open connection if the current one fails,
# and pins SSH_AUTH_SOCK to a fixed location
# such that you never need to worry about breaking connections.
#
# This perhaps is bash only.  Source this in your .bashrc or .bash_aliases
# Currently needs "timeout" installed as well.

# See https://gist.github.com/hilbix/7d3bacb1b91cdf6df5c6
permanent_auth_sock_hack()

hilbix

#!/bin/bash

OOPS() { { printf 'OOPS:'; printf ' %q' "$@"; printf '\n'; } >&2; exit 23; }
x() { "$@"; }
o() { x "$@" || OOPS failed "$?:" "$@"; }

case "$#:$1" in
0:'')		cat <<EOF
Usage: $0 ...tar.gz
	Fixes following problem when an Import onto GitLab fails with following error: