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0

A string is passed to a shell script which should add the date and separate the words by a given character.

The script looks like this:

#!/bin/bash



SEPARATOR=';'



# change separator

ORG_IFS="$IFS"

IFS=$SEPARATOR



# todays date

TODAY=$(date +"%d.%m.%Y")

echo "date: " $TODAY



# concatenate command line arguments

DATA_STRING="$*"

echo "data: " "$DATA_STRING" "(correct)"

echo "data: "  $DATA_STRING  "(wrong: missing separator)"



# date + command line arguments

FINAL_STRING="${TODAY}${SEPARATOR}"${DATA_STRING}""

echo "date+data: " $FINAL_STRING



# restore original separator

IFS=$ORG_IFS

A call would look like this:

myscript.sh apple banana cherry

The output now is:

date:  07.09.2019

data:  apple;banana;cherry (correct)

data:  apple banana cherry (wrong: missing separator)

date+data:  07.09.2019 apple banana cherry

The desired result is:

07.09.2019;apple;banana;cherry

Being fairly new to Linux shell programming I do not understand how to keep the seperator when concatenating variables to a string.

I've tried a lot of combinations with and without the "..." but I don't understand what this actually does to a variable.

shell variable

share|improve this question

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

A string is passed to a shell script which should add the date and separate the words by a given character.

The script looks like this:

#!/bin/bash



SEPARATOR=';'



# change separator

ORG_IFS="$IFS"

IFS=$SEPARATOR



# todays date

TODAY=$(date +"%d.%m.%Y")

echo "date: " $TODAY



# concatenate command line arguments

DATA_STRING="$*"

echo "data: " "$DATA_STRING" "(correct)"

echo "data: "  $DATA_STRING  "(wrong: missing separator)"



# date + command line arguments

FINAL_STRING="${TODAY}${SEPARATOR}"${DATA_STRING}""

echo "date+data: " $FINAL_STRING



# restore original separator

IFS=$ORG_IFS

A call would look like this:

myscript.sh apple banana cherry

The output now is:

date:  07.09.2019

data:  apple;banana;cherry (correct)

data:  apple banana cherry (wrong: missing separator)

date+data:  07.09.2019 apple banana cherry

The desired result is:

07.09.2019;apple;banana;cherry

Being fairly new to Linux shell programming I do not understand how to keep the seperator when concatenating variables to a string.

I've tried a lot of combinations with and without the "..." but I don't understand what this actually does to a variable.

shell variable

share|improve this question

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

A string is passed to a shell script which should add the date and separate the words by a given character.

The script looks like this:

#!/bin/bash



SEPARATOR=';'



# change separator

ORG_IFS="$IFS"

IFS=$SEPARATOR



# todays date

TODAY=$(date +"%d.%m.%Y")

echo "date: " $TODAY



# concatenate command line arguments

DATA_STRING="$*"

echo "data: " "$DATA_STRING" "(correct)"

echo "data: "  $DATA_STRING  "(wrong: missing separator)"



# date + command line arguments

FINAL_STRING="${TODAY}${SEPARATOR}"${DATA_STRING}""

echo "date+data: " $FINAL_STRING



# restore original separator

IFS=$ORG_IFS

A call would look like this:

myscript.sh apple banana cherry

The output now is:

date:  07.09.2019

data:  apple;banana;cherry (correct)

data:  apple banana cherry (wrong: missing separator)

date+data:  07.09.2019 apple banana cherry

The desired result is:

07.09.2019;apple;banana;cherry

Being fairly new to Linux shell programming I do not understand how to keep the seperator when concatenating variables to a string.

I've tried a lot of combinations with and without the "..." but I don't understand what this actually does to a variable.

shell variable

share|improve this question

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

#!/bin/bash



SEPARATOR=';'



# change separator

ORG_IFS="$IFS"

IFS=$SEPARATOR



# todays date

TODAY=$(date +"%d.%m.%Y")

echo "date: " $TODAY



# concatenate command line arguments

DATA_STRING="$*"

echo "data: " "$DATA_STRING" "(correct)"

echo "data: "  $DATA_STRING  "(wrong: missing separator)"



# date + command line arguments

FINAL_STRING="${TODAY}${SEPARATOR}"${DATA_STRING}""

echo "date+data: " $FINAL_STRING



# restore original separator

IFS=$ORG_IFS

myscript.sh apple banana cherry

date:  07.09.2019

data:  apple;banana;cherry (correct)

data:  apple banana cherry (wrong: missing separator)

date+data:  07.09.2019 apple banana cherry

07.09.2019;apple;banana;cherry

share|improve this question

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 34 mins ago

SörenSören

1

New contributor

Sören is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 34 mins ago

SörenSören

1