memo

#!/usr/bin/env bash

if [[ $# -eq 1 ]] || [[ $# -eq 10 ]]
then
	echo "1 ou 10"
fi

if [[ $# -eq 1 ]] && [[ $# -eq 10 ]]
then
	echo "1 et 10"
fi

if [[ -f "/home/dionisos/.bashrc" ]]
then
	echo "/home/dionisos/.bashrc is a file" # sortie
else
	echo "/home/dionisos/.bashrc is not a file"
fi

if [[ -f "/home/dionisos/" ]]
then
	echo "/home/dionisos/ is a file"
else
	echo "/home/dionisos/ is not a file" # sortie
fi

if [[ -f "/home/dionisos/" ]]
then
	echo "/home/dionisos/ is a directory"
else
	echo "/home/dionisos/ is not a directory"
fi

if [[ -e /home/dionisos/ ]]
then
	echo "-e /home/dionisos"
fi

if [[ -e /home/dionisos/.bashrc ]]
then
	echo "-e /home/dionisos/.bashrc"
fi

# echo * # affiche tout les fichiers du dossiers

for file in "file1" "file2" "file3"
do
 	echo "$file"
done

variable="plop"
echo $variable # sortie = "plop"

# read input
# echo $input

if [ $# -ne 1 ]
then
    echo "Nombre d’argument différent de 1"
fi

if [ ! $# -ne 1 ]
then
    echo "Nombre d’argument égal à 1"
	echo "arg1 → $1"
elif [ $# -le 2 ]
then
	 echo "Nombre d’argument inférieur ou égal à 2"
fi

function funct1()
{
	echo "funct1"
}

funct1

file="~/plop.ext/"
extension=${file##*.}
without_extension=${file%.*}
file_name=$(basename "$file")
substring=${file:2:5} #commence au 3ème caractère et finit 5 caractères plus loin
echo "\$file=="$file
echo "\$extension=="$extension
echo "\$without_extension=="$without_extension
echo "\$file_name=="$file_name
echo "$substring=="$substring

#export/alias/source voir ~/script/boot_config

case "plop" in
	pl) echo "pl";;
	lop) echo "plop";;
	*op) echo "*op";;
	*) echo "nothing";;
esac

the_date=$(date)
echo $the_date
echo \"

# while read line
# do
# 	echo $line
# done

tab=("a" "b" "c")
echo ${tab[@]}
echo ${tab[1]}

s=2
a=10
while [[ a -ge 0 ]]
do
	echo $a
	a=$((a - s))
done

# Conditional expressions are used by the [[ compound command and
# the test and [ builtin commands to test file attributes and per‐
# form string and arithmetic comparisons. Expressions are formed
# from the following unary or binary primaries. If any file argu‐
# ment to one of the primaries is of the form /dev/fd/n, then file
# descriptor n is checked. If the file argument to one of the
# primaries is one of /dev/stdin, /dev/stdout, or /dev/stderr,
# file descriptor 0, 1, or 2, respectively, is checked.

# Unless otherwise specified, primaries that operate on files fol‐
# low symbolic links and operate on the target of the link, rather
# than the link itself.

# When used with [[, the < and > operators sort lexicographically
# using the current locale. The test command sorts using ASCII
# ordering.

# -a file
# True if file exists.
# -d file
# True if file exists and is a directory.
# -f file
# True if file exists and is a regular file.
# -r file
# True if file exists and is readable.
# -s file
# True if file exists and has a size greater than zero.
# -w file
# True if file exists and is writable.
# -x file
# True if file exists and is executable.
# -L file
# True if file exists and is a symbolic link.
# file1 -ef file2
# True if file1 and file2 refer to the same device and
# inode numbers.
# file1 -nt file2
# True if file1 is newer (according to modification date)
# than file2, or if file1 exists and file2 does not.
# file1 -ot file2
# True if file1 is older than file2, or if file2 exists and
# file1 does not.
# -z string
# True if the length of string is zero.
# string
# stringTrue if the length of string is non-zero.

# string1 == string2
# string1 = string2
# True if the strings are equal. = should be used with the
# test command for POSIX conformance. When used with the
# [[ command, this performs pattern matching as described
# above (Compound Commands).

# string1 != string2
# True if the strings are not equal.

# string1 < string2
# True if string1 sorts before string2 lexicographically.

# string1 > string2
# True if string1 sorts after string2 lexicographically.

# arg1 OP arg2
# OP is one of -eq, -ne, -lt, -le, -gt, or -ge. These
# arithmetic binary operators return true if arg1 is equal
# to, not equal to, less than, less than or equal to,
# greater than, or greater than or equal to arg2, respec‐
# tively. Arg1 and arg2 may be positive or negative inte‐
# gers.


file="/home/dionisos/plop.ext"
length=${#parameter}
echo $length