Revisions to How to get a bash script argument given its position from the end? [duplicate]

Fixed quoting (would otherwise split the parameter values and perform filename globbing on the split values)

Source Link

edited Dec 7, 2018 at 20:36

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In addition (to Kusalananda's answer):

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@"$@" ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

In addition (to Kusalananda's answer):

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@ ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

In addition (to Kusalananda's answer):

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in "$@" ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

explained the "in addition"

Source Link

edited Dec 7, 2018 at 20:25

Ljm Dullaart

5.1k
14
27

In addition (to Kusalananda's answer):

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@ ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

In addition:

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@ ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

In addition (to Kusalananda's answer):

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@ ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

Source Link

answered Dec 7, 2018 at 20:18

Ljm Dullaart

5.1k
14
27

In addition:

#! /bin/bash 

echo "(bash/ksh): ${@: -1}"
echo "(bash 3.x+): ${!#}"
echo "(bash 3.x+): $BASH_ARGV"
echo "(bash 3.x+/ksh): ${@:$#}"
echo "(bash 3.x+): ${BASH_ARGV[0]}"

and if you worry about portability:

#!/bin/bash

penultimate=''
ultimate=''

for p in $@ ; do
    penultimate="$ultimate"
    ultimate="$p"
done

echo "penultimate=$penultimate"
echo "ultimate=$ultimate"

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