New aliases

bash/scripts/scripts/arrange_slides

@@ -0,0 +1,19 @@
+#! /usr/bin/env bash
+
+filename=$1
+rmpattern=$2
+suffix=$3
+dstFolder="${PWD}/arranged"
+newFilename="${filename%${rmpattern}}${suffix}.pdf"
+# Make destination folder
+mkdir -p ${dstFolder}
+
+pdfjam --nup 2x2 \
+    --landscape \
+    --clip 'true' \
+    --delta '0cm 0cm' \
+    --offset '1cm 0cm' \
+    --outfile ${newFilename} ${filename}
+mv ${newFilename} ${dstFolder}
+# unused
+# --trim '0.7cm 0cm 0.7cm 0cm' \

bash/scripts/scripts/arrangefai

@@ -0,0 +1,13 @@
+#! /usr/bin/env bash
+file=$1
+outfile="${file%'handout.pdf'}jam4.pdf"
+dst=${PWD}/jammed
+mkdir -p ${dst}
+pdfjam --nup 2x2 --column false \
+    --landscape --offset '1.2cm 0cm' \
+    --outfile ${outfile} --scale 0.95 \
+    --frame true \
+    $1
+
+mv ${outfile} ${dst}
+

bash/scripts/scripts/chatroom

@@ -0,0 +1,195 @@
+#!/usr/bin/env bash
+################################################################################
+## Author: Sebastian Lenzlinger
+## EMail: eswer@eswo.ch
+################################################################################
+
+################################################################################
+# TIPP: source this file so functions are available directly in the command line
+################################################################################
+initialize () {
+    if [[ $# -ne 1 ]]; then
+        echo "Usage: initialize '<name>'"
+        echo "Please only supply your name as a single string"
+        echo "This will be used as the branch name."
+        return
+    fi
+
+    usrnm=$1
+
+
+    # Create repo 'usrnm' with branch 'usrnm'
+    git init -b "${usrnm}" "${usrnm}" && cd "${usrnm}"
+    echo "Initialized git repo ${usrnm} with branch ${usrnm}"
+    git config --local user.name "${usrnm}"
+    git config --local user.email "${usrnm}@gitchat.local"
+    # Establish tree object
+    treeroot=$(git write-tree)
+    echo "Tree written at ref "${treeroot}"."
+    
+    # Create initial commit without parent commits
+    initcommit="$(echo "${usrnm} has joined the chatroom." | git commit-tree "${treeroot}")"
+    echo "Initial commit "${initcommit}" with message "$(git cat-file -p ${initcommit})"."
+
+    #Set HEAD of usrnm branch to first commit
+    git update-ref "$(git symbolic-ref HEAD)" "${initcommit}"
+}
+
+
+post() {
+    if ! [[ -d "${PWD}/.git" ]]; then
+        echo "You must be in a git repo root to use this command!"
+        return
+    fi
+
+    # Single quotes so can use any spacial characters that bash would expand.
+    if [[ $# -ne 1 ]]; then
+        echo "Please supply you message in single quotes!"
+        echo "Usage: post '<msg>'"
+        return
+    fi
+
+    msg=$1
+
+    # this seems to be the way; assuming there is one tree
+    roottreeref=$(git log --pretty=format:%T -n 1)
+    if [[ -z "${roottreeref}" ]]; then
+        echo "NO TREE: Couldnt find tree object."
+        return
+    fi
+    echo "Root trees ref "${roottreeref}""
+
+    parents=
+    for p in $(git for-each-ref --format='%(objectname)' refs/heads/); do
+        parents+="-p ${p} "
+    done
+    echo "Parent commits ${parents}"
+
+    # This didn't work!!!
+    # roottreeref=($(git cat-file --batch-all-objects --batch-check | grep tree))
+    
+    # Put message at end so last whitespace is ignored, doesn't lead to issues
+    commitref="$(git commit-tree ${roottreeref} ${parents} -m "${msg}")"
+    echo "Current commits ref ${commitref}"
+
+    git update-ref "$(git symbolic-ref HEAD)" "${commitref}"
+    echo 
+    echo "Posted message:"
+    echo "${msg}"
+
+    unset roottreeref
+    unset parents
+    unset commitref
+    unset msg
+}
+
+show() {
+
+    if ! [[ -d "${PWD}/.git" ]]; then
+        echo "You must be in a git repo root to use this command!"
+        return
+    fi
+
+    # This is not correct, only follow local branches, not remote branches.
+    #for b in $(git branch --format '%(refname:short)'); do
+        #git log $b --pretty=format:'%C(bold)%an (%ar):%C(reset) %s' --reverse
+    #done
+    if [[ $# -gt 1 ]];then
+        echo "There is only one OPTIONAL argument: -g"
+        return
+    fi
+    
+    gopt=
+    if [[ $1 = "-g" ]]; then gopt="--graph";
+    fi
+
+
+    git log --pretty=format:'%C(bold)%Cred%an (%Cgreen%cd):%Creset %s' \
+        --date=format:'%d-%m-%y--%H:%M' ${gopt}
+
+
+}
+
+# $usrto is the remote name. $usrfrom is a branch name.
+disseminate () {
+    if ! [[ -d "${PWD}/.git" ]]; then
+        echo "You must be in a git repo root to use this command!"
+        return
+    fi
+
+    if [[ $# -ne 1 ]]; then
+        echo "Usage: disseminate <remote-user-name>"
+        echo "Please supply the name of the user you wish to send your message to!"
+        return
+    fi
+
+    usrfrom="$(git branch --show-current)"
+    usrto="$1"
+
+
+    # Ensure remote exists
+    if ! git remote get-url "$usrto" > /dev/null 2>&1; then
+        echo "No such remote. You must first add a remote for ${usrto}"
+        echo "How to add: git remote add $usrto <Repo-Url>"
+        return
+    fi
+
+    if ! git push "${usrto}" "${usrfrom}"; then
+        echo "Failed to push to ${usrto}. Check permissions or network issues."
+        return
+    fi
+
+}
+################################################################################
+# Don't use described commands. Not sure if safe.
+fetch-peers() {
+    echo "Example to fetch all branches from a remote 'bob':"
+    echo "git fetch bob"
+}
+
+pull-remote() {
+    echo "Example to pull changes from a specific branch on 'bob' remote:"
+    echo "git pull bob <branch-name>"
+}
+
+info() {
+    echo "================================================="
+    echo "Adding a remote:"
+    echo "================================================="
+    echo "git remote add <remote-name> <url-of-remote>"
+    echo "Note that <remote-name> can be chosen arbitrarily"
+    echo 
+    echo "================================================="
+    echo "PUSHing to remote branch:"
+    echo "================================================="
+    echo "git push <remote-name> <the-local-branch-to-push>"
+    echo "Example: Push branch 'Carol' to remote 'bob'"
+    echo "git push bob Carol"
+    echo "After this the remote 'bob' will have everything from your branch 'Carol' also on a branch called 'Carol'"
+    echo 
+    echo "WARNING: Do not use 'git push Bob Carol' if you added remote 'bob' like this: 'git remote add bob ../Bob'"
+    echo "This only means that you are adding a remote in .git/refs/remote, not a branch on your part."
+    echo
+    echo "================================================="
+    echo "Some others:"
+    echo "================================================="
+    fetch-peers
+    echo 
+    echo 
+    pull-remote
+    echo
+    echo "END INFO"
+}
+
+
+    
+echo "To use the functions, source this file from the command line:"
+echo "'source path/to/chatroom' or just 'source chatroom' if it is in the same directory."
+echo "After this the functions are available for the duration of your bash session as if they where built-in commands!"
+echo "That means to call the initialize function just type 'initialize' NOT './initialize'"
+echo "You will see this message again when you source the file."
+################################################################################
+# Useful for debugging
+################################################################################
+alias glog="git log --oneline --graph"
+alias gloga="git log --oneline --graph --all"

bash/scripts/scripts/db23-arrange.sh

@@ -0,0 +1,9 @@
+#! /usr/bin/bash
+filename=$1
+arrangedFolder=${PWD}/arranged
+newFilename=${filename:0:3}db23-arranged.pdf
+echo "Arranging $filename"
+/usr/bin/pdfjam --nup 2x2 --landscape --outfile $newFilename $filename
+echo "Moving $new-filename to $arranged-folder"
+mv $newFilename $arrangedFolder
+echo "Done"

bash/scripts/scripts/mergeindir

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+qpdf --empty --pages $(ls -l | grep -v '^d' | sort) -- "$1.pdf"

bash/scripts/scripts/mergepdfs

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# Check if qpdf is installed
+if ! command -v qpdf &> /dev/null; then
+    echo "Error: qpdf could not be found. Please install qpdf."
+    exit 1
+fi
+
+# Target PDF filename
+output_pdf="$1.pdf"
+if [[ -z "$1" ]]; then
+    echo "Usage: $0 <output-file-base-name>"
+    exit 1
+fi
+
+# Prepare an array to hold the PDF files
+pdf_files=()
+shopt -s nullglob
+for file in *.pdf; do
+    pdf_files+=("$file")
+done
+
+# Check if we found any PDF files
+if [[ ${#pdf_files[@]} -eq 0 ]]; then
+    echo "No PDF files found in the current directory."
+    exit 1
+fi
+
+# Sort files just in case
+IFS=$'\n' pdf_files=($(sort <<<"${pdf_files[*]}"))
+unset IFS
+
+# Run qpdf to combine PDF files
+qpdf --empty --pages "${pdf_files[@]}" -- "$output_pdf"
+
+echo "PDF files combined into $output_pdf"
+

bash/scripts/scripts/pr23-arrange.sh

@@ -0,0 +1,10 @@
+#! /usr/bin/bash
+
+filename=$1
+arrangedFolder=${PWD}/arranged
+newFilename=${filename}-pr23-arranged.pdf
+echo "Arranging $filename"
+/usr/bin/pdfjam --nup 2x1 --landscape --outfile $newFilename $filename
+echo "Moving $newFilename to $arrangedFolder"
+mv $newFilename $arrangedFolder
+echo "Done"