Prepare arguments containing quoted string in variable
up vote
3
down vote
favorite
In a Bash script, I call a program like this in several places:
numfmt --suffix=" B" --grouping 231210893
Where the number is different every time, but the other parameters stay the same.
I would now like to move the other parameters out of the many different calls, so they are centrally defined and can be easily changed. My attempt was like this:
NUMFMT='--suffix=" B" --grouping'
...
numfmt $NUMFMT 231210893
Unfortunately, this doesn't work. The quote signs are removed at some point, and numfmt complains about an uninterpretable extra argument B. I tried plenty of other versions, using other quotes both in the definition and in the use of NUMFMT, to no avail.
How do I do this properly? And if it's not too complicated, I would also like to understand why my version doesn't work and (hopefully) another one does.
bash string bash-expansion
edited yesterday
Peter Mortensen
85358
asked 2 days ago
A. Donda
1558
add a comment |
up vote
3
down vote
favorite
In a Bash script, I call a program like this in several places:
numfmt --suffix=" B" --grouping 231210893
Where the number is different every time, but the other parameters stay the same.
I would now like to move the other parameters out of the many different calls, so they are centrally defined and can be easily changed. My attempt was like this:
NUMFMT='--suffix=" B" --grouping'
...
numfmt $NUMFMT 231210893
Unfortunately, this doesn't work. The quote signs are removed at some point, and numfmt complains about an uninterpretable extra argument B. I tried plenty of other versions, using other quotes both in the definition and in the use of NUMFMT, to no avail.
How do I do this properly? And if it's not too complicated, I would also like to understand why my version doesn't work and (hopefully) another one does.
bash string bash-expansion
edited yesterday
Peter Mortensen
85358
asked 2 days ago
A. Donda
1558
3
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago
add a comment |
up vote
3
down vote
favorite
up vote
3
down vote
favorite
In a Bash script, I call a program like this in several places:
numfmt --suffix=" B" --grouping 231210893
Where the number is different every time, but the other parameters stay the same.
I would now like to move the other parameters out of the many different calls, so they are centrally defined and can be easily changed. My attempt was like this:
NUMFMT='--suffix=" B" --grouping'
...
numfmt $NUMFMT 231210893
Unfortunately, this doesn't work. The quote signs are removed at some point, and numfmt complains about an uninterpretable extra argument B. I tried plenty of other versions, using other quotes both in the definition and in the use of NUMFMT, to no avail.
How do I do this properly? And if it's not too complicated, I would also like to understand why my version doesn't work and (hopefully) another one does.
bash string bash-expansion
edited yesterday
Peter Mortensen
85358
asked 2 days ago
A. Donda
1558
In a Bash script, I call a program like this in several places:
numfmt --suffix=" B" --grouping 231210893
Where the number is different every time, but the other parameters stay the same.
I would now like to move the other parameters out of the many different calls, so they are centrally defined and can be easily changed. My attempt was like this:
NUMFMT='--suffix=" B" --grouping'
...
numfmt $NUMFMT 231210893
Unfortunately, this doesn't work. The quote signs are removed at some point, and numfmt complains about an uninterpretable extra argument B. I tried plenty of other versions, using other quotes both in the definition and in the use of NUMFMT, to no avail.
How do I do this properly? And if it's not too complicated, I would also like to understand why my version doesn't work and (hopefully) another one does.
bash string bash-expansion
bash string bash-expansion
edited yesterday
Peter Mortensen
85358
asked 2 days ago
A. Donda
1558
edited yesterday
Peter Mortensen
85358
asked 2 days ago
A. Donda
1558
edited yesterday
Peter Mortensen
85358
edited yesterday
Peter Mortensen
85358
edited yesterday
Peter Mortensen
85358
85358
asked 2 days ago
A. Donda
1558
asked 2 days ago
A. Donda
1558
asked 2 days ago
A. Donda
1558
1558
3
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago
add a comment |
3
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago
3
3
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago
add a comment |
2 Answers
2
active
oldest
votes
up vote
6
down vote
accepted
Try arrays:
NUMFMT=( --suffix=" B" '--grouping' )
....
numfmt "${NUMFMT[@]}" 231210893
edited yesterday
Filipe Brandenburger
6,1041625
answered 2 days ago
Isaac
9,58411443
I had to remove the"s in the first argument, but now it works perfectly. Thanks!
– A. Donda
yesterday
add a comment |
up vote
0
down vote
Wouldn't that be an excellent case for an alias?
$ alias nfmtB='numfmt --suffix=" B" --grouping'
$ nfmtB 324235345656
324.235.345.656 B
answered yesterday
RudiC
3,0811211
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled withshopt -s expand_aliases.
– David Foerster
yesterday
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
6
down vote
accepted
Try arrays:
NUMFMT=( --suffix=" B" '--grouping' )
....
numfmt "${NUMFMT[@]}" 231210893
edited yesterday
Filipe Brandenburger
6,1041625
answered 2 days ago
Isaac
9,58411443
I had to remove the"s in the first argument, but now it works perfectly. Thanks!
– A. Donda
yesterday
add a comment |
up vote
6
down vote
accepted
Try arrays:
NUMFMT=( --suffix=" B" '--grouping' )
....
numfmt "${NUMFMT[@]}" 231210893
edited yesterday
Filipe Brandenburger
6,1041625
answered 2 days ago
Isaac
9,58411443
I had to remove the"s in the first argument, but now it works perfectly. Thanks!
– A. Donda
yesterday
add a comment |
up vote
6
down vote
accepted
up vote
6
down vote
accepted
Try arrays:
NUMFMT=( --suffix=" B" '--grouping' )
....
numfmt "${NUMFMT[@]}" 231210893
edited yesterday
Filipe Brandenburger
6,1041625
answered 2 days ago
Isaac
9,58411443
Try arrays:
NUMFMT=( --suffix=" B" '--grouping' )
....
numfmt "${NUMFMT[@]}" 231210893
edited yesterday
Filipe Brandenburger
6,1041625
answered 2 days ago
Isaac
9,58411443
edited yesterday
Filipe Brandenburger
6,1041625
edited yesterday
Filipe Brandenburger
6,1041625
edited yesterday
Filipe Brandenburger
6,1041625
6,1041625
answered 2 days ago
Isaac
9,58411443
answered 2 days ago
Isaac
9,58411443
answered 2 days ago
Isaac
9,58411443
9,58411443
I had to remove the"s in the first argument, but now it works perfectly. Thanks!
– A. Donda
yesterday
add a comment |
I had to remove the"s in the first argument, but now it works perfectly. Thanks!
– A. Donda
yesterday
I had to remove the
"s in the first argument, but now it works perfectly. Thanks!– A. Donda
yesterday
I had to remove the
"s in the first argument, but now it works perfectly. Thanks!– A. Donda
yesterday
add a comment |
up vote
0
down vote
Wouldn't that be an excellent case for an alias?
$ alias nfmtB='numfmt --suffix=" B" --grouping'
$ nfmtB 324235345656
324.235.345.656 B
answered yesterday
RudiC
3,0811211
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled withshopt -s expand_aliases.
– David Foerster
yesterday
add a comment |
up vote
0
down vote
Wouldn't that be an excellent case for an alias?
$ alias nfmtB='numfmt --suffix=" B" --grouping'
$ nfmtB 324235345656
324.235.345.656 B
answered yesterday
RudiC
3,0811211
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled withshopt -s expand_aliases.
– David Foerster
yesterday
add a comment |
up vote
0
down vote
up vote
0
down vote
Wouldn't that be an excellent case for an alias?
$ alias nfmtB='numfmt --suffix=" B" --grouping'
$ nfmtB 324235345656
324.235.345.656 B
answered yesterday
RudiC
3,0811211
Wouldn't that be an excellent case for an alias?
$ alias nfmtB='numfmt --suffix=" B" --grouping'
$ nfmtB 324235345656
324.235.345.656 B
answered yesterday
RudiC
3,0811211
answered yesterday
RudiC
3,0811211
answered yesterday
RudiC
3,0811211
answered yesterday
RudiC
3,0811211
3,0811211
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled withshopt -s expand_aliases.
– David Foerster
yesterday
add a comment |
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled withshopt -s expand_aliases.
– David Foerster
yesterday
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled with
shopt -s expand_aliases.– David Foerster
yesterday
Good idea but with a little catch: command aliases are disabled in scripts by default unless enabled with
shopt -s expand_aliases.– David Foerster
yesterday
add a comment |
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3
See Why does my shell script choke on whitespace or other special characters? - in particular, the section How do I store a command in a variable? in @Gilles answer
– steeldriver
2 days ago