Doc/Tools/External: test.bash

#!/bin/bash
# Selecting shell

# Numeric if                            # Comment
value=-4                                # Only integers
large=false
if test ${value} -eq 1; then            # `test' evaluation of condition
  echo "one"
elif test ${value} -lt 0; then
  echo "Negative"
else
  echo "Large"
  large=true
fi

# Boolean variable
if ${large}; then          
  echo "Is large!"
  exit                                  # To stop every thing
fi

# String if
value="one"
if test ! ${value} = 'one'; then        # '!' as the contrary
  echo "Different than 'one'!"
  exit
fi

# File existence
dateval=`date +%Y%m%d%H%M%S`            # Saving into a variable the result of `date' coreutil date tool
filen=${dateval}'_file.txt'
if test -f ${filen}; then             # '!' as the contrary
  echo "File '"${filen}"' does not exist!"
  exit
fi

# Incremental loop                      # Comment
i=1                                     # No spaces on definition of variables
Rangeloop=10                            # Case-sensitive!
echo "Initial values"                   # Printing on the terminal
while test ${i} -le $Rangeloop; do      # Loop initialization ';' for new line
  echo ${i}
  i=`expr ${i} + 1`                     # Loop increment using coreutil `expr'
done

# Incremental loop                      # Comment
i=1                                     # No spaces on definition of variables
Rangeloop=10                            # Case-sensitive!
files=''
echo "Initial values"                   # Printing on the terminal
while test ${i} -le $Rangeloop; do      # Loop initialization ';' for new line
  echo ${i}
  iS=`printf %02d ${i}`                 # `printf': coreutil format printing tool
  filen=${iS}_file.txt
  echo ${i} > ${filen}                  # '>' to write the left side result into a file
  if test ${i} -eq 0; then              # Staring an if
    files=${filen}
  else
    files=${files}':'${filen}
  fi
  i=`expr ${i} + 1`                     # Loop increment using coreutil `expr'
done

echo "quadratic values"
# 'variable' loop
for filen in *_file.txt; do             # Getting all files with the given expression
  val=`cat ${filen}`                    # Outputting content of file and keeping it into a variable
  valpot=`expr ${val} '*' ${val}`
  echo ${valpot}
done

echo "Content of files"
# 'assigned variables' loop
fs=`echo ${files} | tr ':' ' '`         # Use of `tr' coreutil substitution tool
for filen in ${fs}; do
  echo ${filen}"..."
  cat ${filen}
done

# Pipes
Nfiles=`ls -1 *_file.txt | wc -l`       # '|' to connect consecutively instrucions
echo "Number of files:"$Nfiles

# Case
num=3
case ${num} in
  1)
    echo "one"
  ;;
  2)
    echo "two"
  ;;
  3)
    echo "three"
  ;;
  *)
    echo "other than one, two, three !"
  ;;
esac

# Complet file name generation
Syear=2012
Eyear=2014
iyr=${Syear}
otex=table
cat << EOF > ${otex}.tex
\\documentclass{article}

\\begin{document}
\\begin{center}
\\begin{tabular}{cccl}
{\\bfseries{year}} & {\\bfseries{month}} & {\\bfseries{Ndays}} & {\\bfseries{file}}\\\\ \\hline 
EOF
while test ${iyr} -le ${Eyear}; do
  im=1
  while test ${im} -le 12; do
    imS=`printf %02d ${im}`
    d1=`date +%j -d"${iyr}${imS}01"`
    d2=`date +%j -d"${iyr}${imS}01 1 month"`
    Ndays=`expr ${d2} - ${d1}`
    if test ${d2} -eq 1; then Ndays=31; fi
    id=1
    while test ${id} -le ${Ndays}; do
      idS=`printf %02d ${id}`
      id=`expr ${id} + 1`
    done
    mon=`date +%b -d"${iyr}${imS}${idS}"`
    cat << EOF >> ${otex}.tex
${iyr} & ${mon} & ${Ndays} & ${iyr}${imS}${idS}.nc \\\\
EOF
    im=`expr ${im} + 1`
  done
  iyr=`expr ${iyr} + 1`
done
cat << EOF >> ${otex}.tex
\\end{tabular}
\\end{center}

\\end{document}
EOF
pdflatex ${otex}
pdflatex ${otex}
evince ${otex}.pdf &

# Function
function foldInf() {
# Function to provide information from a folder
  fold=$1

  Nfiles=`ls -1 ${fold} | wc -l`
  DiskSpace=`du -hsc ${fold} | grep total`

  echo "Information of '"${fold}"' _______"
  echo "Nfiles: "${Nfiles}
  echo "Disk space: "${DiskSpace}
}

foldInf ./