Awọn ibeere Ifọrọwanilẹnuwo iṣe ati Awọn Idahun lori Ikarahun Ikarahun Shell

Pẹlu idahun ti o lagbara ti a ngba lori awọn nkan Jomitoro jara, akọkọ ti iru rẹ lori eyikeyi Linux How-to oju opo wẹẹbu ni irisi Awọn ayanfẹ, Awọn esi ni asọye ati lori Adirẹsi Imeeli ti ara ẹni jẹ ki a lọ lati nkan kan si ekeji nkan.

Eyi ni ọna asopọ si awọn nkan jara Awọn ibere ijomitoro ti a tẹjade tẹlẹ lori linux-console.net, nibi ti a ti bo ọpọlọpọ awọn akọle bii,, FTP, MySQL, Afun, Iwe afọwọkọ, Awọn ofin Linux, ati bẹbẹ lọ.

Tẹsiwaju si jara ti o wa loke nibi a nbọ pẹlu 5 iyanu Awọn ibeere Lainos Lainos miiran ati idahun wọn. Rẹ (Awọn onkawe linux-console.net ati Awọn alejo loorekoore) atilẹyin nigbagbogbo nilo lati jẹ ki o ṣaṣeyọri.

Bayi ṣẹda faili kan ti a pe ni 'userstats.sh' ki o ṣafikun koodu atẹle si rẹ.

#!/bin/bash 
echo "Hello, $LOGNAME" 
echo "Current date is `date`" 
echo "User is `who i am`" 
echo "Current directory `pwd`"

Gbe igbanilaaye ṣiṣẹ ati ṣiṣe akosile bi o ṣe han ni isalẹ.

# chmod 755 userstats.sh 
# ./userstats.sh

Hello, avi 
Current date is Sat Jun  7 13:05:29 IST 2014 
User is avi      pts/0        2014-06-07 11:59 (:0) 
Current directory /home/avi/Desktop

Lẹẹkansi ṣẹda faili kan ti a pe ni 'two-numbers.sh' ki o ṣafikun akoonu atẹle si rẹ.

#!/bin/bash 
# The Shebang

if [ $# -ne 2 ] 
# If two Inputs are not received from Standard Input

then 
# then execute the below statements

    echo "Usage - $0   x    y" 
    # print on standard output, how-to use the script (Usage - ./1.sh   x    y )

    echo "        Where x and y are two nos for which I will print sum" 
    # print on standard output, “Where x and y are two nos for which I will print sum ”

    exit 1 
    # Leave shell in Error Stage and before the task was successfully carried out.

fi 
# End of the if Statement.

    echo "Sum of $1 and $2 is `expr $1 + $2`"
    # If the above condition was false and user Entered two numbers as a command Line Argument,   
       it will show the sum of the entered numbers.

Ṣeto igbanilaaye alaṣẹ lori faili naa ki o ṣiṣẹ iwe afọwọkọ bi a ṣe han ni isalẹ.

# chmod 755 two-numbers.sh

Ipo 1: Nṣiṣẹ iwe afọwọkọ laisi titẹ awọn nọmba meji sii bi ariyanjiyan laini aṣẹ, iwọ yoo gba abajade wọnyi.

# ./two-numbers.sh

Usage - ./two-numbers.sh   x    y 
        Where x and y are two nos for which I will print sum

Ipò 2: Nigbati a ba tẹ Awọn nọmba sii bi ariyanjiyan laini aṣẹ iwọ yoo gba abajade bi o ti han.

$ ./two-numbers.sh 4 5 

Sum of 4 and 5 is 9

Nitorinaa iwe afọwọkọ ikarahun ti o wa loke mu ipo naa ṣẹ gẹgẹbi a daba ni ibeere naa.

1li Jẹ ki Nọmba Input = n 2. Ṣeto rev = 0, sd = 0 (Yiyipada ati digitis ẹyọkan ti a ṣeto si 0) 3. n% 10, yoo wa ki o fun ni ẹyọkan osi nọmba pupọ 4. nọmba ti yiyipada ti wa ni ipilẹṣẹ bi rev * 10 + sd 5. Dinku Nọmba Input (n) nipasẹ 1.
1. 6. ti o ba n> 0, lẹhinna goto igbese 3 miiran goto setp 7
2. 7. Tẹjade

Bayi lẹẹkansi, ṣẹda faili kan ti a pe ni 'numbers.sh' ki o ṣafikun koodu ti a fun ni wọnyi.

#!/bin/bash 
if [ $# -ne 1 ] 
then 
    echo "Usage: $0   number" 
    echo "       I will find reverse of given number" 
    echo "       For eg. $0 0123, I will print 3210" 
    exit 1 
fi 

n=$1 
rev=0 
sd=0 

while [ $n -gt 0 ] 
do 
    sd=`expr $n % 10` 
    rev=`expr $rev \* 10  + $sd` 
    n=`expr $n / 10` 
done 
    echo  "Reverse number is $rev"

Fifun igbanilaaye ṣiṣe lori faili naa ki o ṣiṣẹ iwe afọwọkọ bi a ṣe han ni isalẹ.

# chmod 755 numbers.h

Ipò 1: Nigbati a ko ba pese Input bi ariyanjiyan laini aṣẹ, iwọ yoo gba iṣelọpọ wọnyi.

./numbers.sh

Usage: ./numbers.sh  number 
       I will find reverse of given number 
       For eg. ./2.sh 123, I will print 321

Ipò 2: Nigbati a ba pese Input bi ariyanjiyan ila laini aṣẹ.

$ ./numbers.sh 10572 

Reverse number is 27501

Iwe afọwọkọ ti o wa loke ṣiṣẹ ni pipe ati pe iṣelọpọ jẹ ohun ti a nilo.

Fun apẹẹrẹ, ṣiṣe aṣẹ atẹle lati ṣe iṣiro awọn nọmba ni akoko gidi nipa lilo pipaṣẹ bc bi o ti han.

$ echo 7.56 + 2.453 | bc

10.013

# pi 100 

3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067

O han ni! A gbọdọ ni package ‘pi’ ti fi sii. Kan ṣe apt tabi yum lati gba package ti o nilo lati fi ‘pi’ sori ẹrọ pinpin ti o nlo.

Iyẹn ni gbogbo fun bayi. Emi yoo wa nibi lẹẹkansi pẹlu nkan miiran ti o nifẹ laipẹ. Titi lẹhinna wa ni aifwy ati sopọ si linux-console.net. Maṣe gbagbe lati pese wa pẹlu rẹ awọn esi ti o niyelori ni apakan asọye ni isalẹ.