PSE TP04

Ex 1.
1.

2.  ls: cannot access bidule: No such file or directory

3.  ls: cannot access bidule: No such file or directory
    hello

4.  argypriou@turing:~/PSE/TP04$ touch bidule
    argypriou@turing:~/PSE/TP04$ ls bidule && echo hello
    bidule
    hello

6.  argypriou@turing:~/PSE/TP04$ touch test1 test2 test3
    argypriou@turing:~/PSE/TP04$ ls
    argypriou@turing:~/PSE/TP04$ wc -w
    6

7.  argypriou@turing:~/PSE/TP04$ ls | wc -w

8.  argypriou@turing:~/PSE/TP04$ ls | sed s/test/bidule/

Ex 2.
1.  Je rentre "nedit &" dans chacun des terminaux
2.  la commande "ps" tout court ne liste que les programmes du terminal lui-même
3a) ps -u argypriou | grep nedit
 b) ps -u argypriou | grep nedit | tr -s " "
 c) ps -u argypriou | grep nedit | tr -s " " | cut -d " " -f1
 e) kill `ps -u argypriou | grep nedit | tr -s " " | cut -d " " -f1`
 f) nedit & nedit & nedit & nedit &
    pkill nedit &2> /dev/null





Ex 3.
1.
|Script|
    #!/bin/sh

    if [ $# -lt 1 ]
        then echo "usage: $0 cmd_1 [cmd_2] ... [cmd_n]"
        exit 1
    fi

    for PARAM in $*
    do
        ps -C $PARAM
    done
    exit 0

2.
|Script|
    #!/bin/sh

    if [ $# -lt 1 ]
        then echo "usage: $0 cmd_1 [cmd_2] ... [cmd_n]"
        exit 1
    fi

    PARAM=$1

    for i in $*;do
        PARAM=$PARAM,$i
    done
    echo $PARAM

    ps -C $PARAM
    exit 0


3.
|Script|
    #!/bin/sh

    if [ $# -lt 1 ]
        then echo "usage: $0 cmd_1 [cmd_2] ... [cmd_n]"
        exit 1
    fi

    PARAM=$(echo $* | tr " " ",")

    ps -C $PARAM
    exit 0

4.
|Script|
    #!/bin/sh

    if [ $# -lt 1 ]
        then echo "usage: $0 cmd_1 [cmd_2] ... [cmd_n]"
        exit 1
    fi


    HEADER=""
    while [ $# -gt 0 ]
    do
        ps -C $1 $HEADER
        shift
        HEADER="--no-header"
    done
    exit 0