89 lines
1.4 KiB
Plaintext
89 lines
1.4 KiB
Plaintext
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1) a) for((i=1;i<=5;i++));do echo $i;done
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for((i=1;i<=7;i++));do echo $i;done
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b) !/bin/bash
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if [[ $# -lt 1 ]]
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then
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echo "usage:my_seq.sh <integer>"
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exit
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fi
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if [[ $1 -lt 0 ]]
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then
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echo "Argument must be positive !!"
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exit
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fi
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for ((i=1;i<=$1;i++))
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do echo $i
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done
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exit
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2) #!/bin/bash
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if [[ $# -ne 2 ]]
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then
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echo "Usage: ./mult_mat.sh <NUM_ARG1> <NUM_ARG2>"
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exit
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fi
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if [[ $1 -gt $2 ]]
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then
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echo "First argument must be less than second argument !!"
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exit
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fi
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if [[ $1 -lt 0 ]]
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then
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echo "Arguments must be positive !!"
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exit
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fi
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if [[ $2 -lt 0 ]]
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then
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echo "Arguments must be positive !!"
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exit
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fi
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for ((i=$1;i<=$2;i++))
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do
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for ((f=$1;f<=$2;f++))
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do
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echo -ne "$((i*f))\t"
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done
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echo -e "\n"
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done
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exit
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Par défaut, une variable non initialisée vaut ""
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par exemple :
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y = 3
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echo "$x est egal a $y" va renvoyer " est egal a 3"
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le # sert à passer en décimal
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3)
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a)
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#!/bin/bash
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if [[ $# -lt 2]]
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then ech"Usage: ./bin2dot-with-for.sh <SRC_FILE> <DEST_FILE>"
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exit
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fi
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if [[ $# -f $1]]
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then
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echo "File $1 does not exist !"
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exit
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fi
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if [[ $# -f $2]]
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thenecho -n "$2 exists. Overwrite ? Yes/No --> "
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read answer
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if [[answer == Yes]]
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then cp /dev/null $2
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else done
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fi
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lignes = $(cat $1)
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for i in $lignes
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do
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x = $(expr substr $i 1 8)
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y = $(expr substr $i 9 8)
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z = $(expr substr $i 17 8)
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t = $(expr substr $i 25 8)
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echo "$((2#$x)).$((2#$y)).$((2#$z)).$((2#$t))" >> $2
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done
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exit
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b)
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b.a) 0 x=7
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b.b) 0 x=
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b.c) 1 x=
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b.d)
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