Substitute ./ and ../ directories by actual names
I have a script which finds files in the directory specified by user.
#!/bin/bash
# make sure about the correct input
if [ -z $1 ]
then
echo "Usage: ./script_name.sh path/to/directory"
else
DIR=$1
if [ $DIR = '.' ]
then
echo "Find files in the directory $PWD"
else
echo "Find files in the directory $DIR"
fi
find $DIR -type f -exec basename {} ;
fi
if I input
$ ./script_name.sh .
script gives me correct substitution ./ to $PWD and shows (for example)
$ Find files in the directory /root/scripts
But I can't make a decision how to substitute ../ to the name of the directory immediately above in the hierarchy. If I input
$ ./script_name.sh ..
script gives me the output
$ Find files in the directory ..
Does anybody know how to substitute ../ to the actual name of the directory?
shell-script
asked 15 hours ago
Alex KuchinAlex Kuchin
205
add a comment |
I have a script which finds files in the directory specified by user.
#!/bin/bash
# make sure about the correct input
if [ -z $1 ]
then
echo "Usage: ./script_name.sh path/to/directory"
else
DIR=$1
if [ $DIR = '.' ]
then
echo "Find files in the directory $PWD"
else
echo "Find files in the directory $DIR"
fi
find $DIR -type f -exec basename {} ;
fi
if I input
$ ./script_name.sh .
script gives me correct substitution ./ to $PWD and shows (for example)
$ Find files in the directory /root/scripts
But I can't make a decision how to substitute ../ to the name of the directory immediately above in the hierarchy. If I input
$ ./script_name.sh ..
script gives me the output
$ Find files in the directory ..
Does anybody know how to substitute ../ to the actual name of the directory?
shell-script
asked 15 hours ago
Alex KuchinAlex Kuchin
205
Try therealpathcommand if it is available.
– Bodo
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago
add a comment |
I have a script which finds files in the directory specified by user.
#!/bin/bash
# make sure about the correct input
if [ -z $1 ]
then
echo "Usage: ./script_name.sh path/to/directory"
else
DIR=$1
if [ $DIR = '.' ]
then
echo "Find files in the directory $PWD"
else
echo "Find files in the directory $DIR"
fi
find $DIR -type f -exec basename {} ;
fi
if I input
$ ./script_name.sh .
script gives me correct substitution ./ to $PWD and shows (for example)
$ Find files in the directory /root/scripts
But I can't make a decision how to substitute ../ to the name of the directory immediately above in the hierarchy. If I input
$ ./script_name.sh ..
script gives me the output
$ Find files in the directory ..
Does anybody know how to substitute ../ to the actual name of the directory?
shell-script
asked 15 hours ago
Alex KuchinAlex Kuchin
205
I have a script which finds files in the directory specified by user.
#!/bin/bash
# make sure about the correct input
if [ -z $1 ]
then
echo "Usage: ./script_name.sh path/to/directory"
else
DIR=$1
if [ $DIR = '.' ]
then
echo "Find files in the directory $PWD"
else
echo "Find files in the directory $DIR"
fi
find $DIR -type f -exec basename {} ;
fi
if I input
$ ./script_name.sh .
script gives me correct substitution ./ to $PWD and shows (for example)
$ Find files in the directory /root/scripts
But I can't make a decision how to substitute ../ to the name of the directory immediately above in the hierarchy. If I input
$ ./script_name.sh ..
script gives me the output
$ Find files in the directory ..
Does anybody know how to substitute ../ to the actual name of the directory?
shell-script
shell-script
asked 15 hours ago
Alex KuchinAlex Kuchin
205
asked 15 hours ago
Alex KuchinAlex Kuchin
205
edited 14 hours ago
Alex Kuchin
asked 15 hours ago
Alex KuchinAlex Kuchin
205
asked 15 hours ago
Alex KuchinAlex Kuchin
205
asked 15 hours ago
Alex KuchinAlex Kuchin
205
205
Try therealpathcommand if it is available.
– Bodo
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago
add a comment |
Try therealpathcommand if it is available.
– Bodo
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago
Try the
realpath command if it is available.– Bodo
15 hours ago
Try the
realpath command if it is available.– Bodo
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago
add a comment |
3 Answers
3
active
oldest
votes
GNU coreutils has the realpath command that does just that.
/tmp/a$ realpath ..
/tmp
Though note that if the path contains symlinks, it will also resolve those:
/tmp/b/c$ realpath ..
/tmp/x/y
(Here, /tmp/b was a symlink to /tmp/x/y/)
This may be different from what the shell does with cd ... E.g. cd ../.. from /tmp/b/c in Bash shows the new path as /tmp/, not as /tmp/x.
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
readlinkwould be another alternative.
– twalberg
13 hours ago
@twalbergreadlinkonly resolves symlinks and not entries like.or.., which were the point of the question.readlink .results in an error (returns status code 1).
– JoL
11 hours ago
2
@JoL Tryreadlink -f .
– twalberg
11 hours ago
add a comment |
A few ideas:
parent="$(dirname "$(pwd)")"
parent="$(
cd ..
pwd
)"
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
add a comment |
You could first cd to .. and then use the $PWD.
answered 15 hours ago
TomaszTomasz
9,59652965
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
GNU coreutils has the realpath command that does just that.
/tmp/a$ realpath ..
/tmp
Though note that if the path contains symlinks, it will also resolve those:
/tmp/b/c$ realpath ..
/tmp/x/y
(Here, /tmp/b was a symlink to /tmp/x/y/)
This may be different from what the shell does with cd ... E.g. cd ../.. from /tmp/b/c in Bash shows the new path as /tmp/, not as /tmp/x.
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
readlinkwould be another alternative.
– twalberg
13 hours ago
@twalbergreadlinkonly resolves symlinks and not entries like.or.., which were the point of the question.readlink .results in an error (returns status code 1).
– JoL
11 hours ago
2
@JoL Tryreadlink -f .
– twalberg
11 hours ago
add a comment |
GNU coreutils has the realpath command that does just that.
/tmp/a$ realpath ..
/tmp
Though note that if the path contains symlinks, it will also resolve those:
/tmp/b/c$ realpath ..
/tmp/x/y
(Here, /tmp/b was a symlink to /tmp/x/y/)
This may be different from what the shell does with cd ... E.g. cd ../.. from /tmp/b/c in Bash shows the new path as /tmp/, not as /tmp/x.
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
readlinkwould be another alternative.
– twalberg
13 hours ago
@twalbergreadlinkonly resolves symlinks and not entries like.or.., which were the point of the question.readlink .results in an error (returns status code 1).
– JoL
11 hours ago
2
@JoL Tryreadlink -f .
– twalberg
11 hours ago
add a comment |
GNU coreutils has the realpath command that does just that.
/tmp/a$ realpath ..
/tmp
Though note that if the path contains symlinks, it will also resolve those:
/tmp/b/c$ realpath ..
/tmp/x/y
(Here, /tmp/b was a symlink to /tmp/x/y/)
This may be different from what the shell does with cd ... E.g. cd ../.. from /tmp/b/c in Bash shows the new path as /tmp/, not as /tmp/x.
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
GNU coreutils has the realpath command that does just that.
/tmp/a$ realpath ..
/tmp
Though note that if the path contains symlinks, it will also resolve those:
/tmp/b/c$ realpath ..
/tmp/x/y
(Here, /tmp/b was a symlink to /tmp/x/y/)
This may be different from what the shell does with cd ... E.g. cd ../.. from /tmp/b/c in Bash shows the new path as /tmp/, not as /tmp/x.
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
edited 15 hours ago
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
answered 15 hours ago
ilkkachuilkkachu
59.4k894168
59.4k894168
readlinkwould be another alternative.
– twalberg
13 hours ago
@twalbergreadlinkonly resolves symlinks and not entries like.or.., which were the point of the question.readlink .results in an error (returns status code 1).
– JoL
11 hours ago
2
@JoL Tryreadlink -f .
– twalberg
11 hours ago
add a comment |
readlinkwould be another alternative.
– twalberg
13 hours ago
@twalbergreadlinkonly resolves symlinks and not entries like.or.., which were the point of the question.readlink .results in an error (returns status code 1).
– JoL
11 hours ago
2
@JoL Tryreadlink -f .
– twalberg
11 hours ago
readlink would be another alternative.– twalberg
13 hours ago
readlink would be another alternative.– twalberg
13 hours ago
@twalberg
readlink only resolves symlinks and not entries like . or .., which were the point of the question. readlink . results in an error (returns status code 1).– JoL
11 hours ago
@twalberg
readlink only resolves symlinks and not entries like . or .., which were the point of the question. readlink . results in an error (returns status code 1).– JoL
11 hours ago
2
2
@JoL Try
readlink -f .– twalberg
11 hours ago
@JoL Try
readlink -f .– twalberg
11 hours ago
add a comment |
A few ideas:
parent="$(dirname "$(pwd)")"
parent="$(
cd ..
pwd
)"
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
add a comment |
A few ideas:
parent="$(dirname "$(pwd)")"
parent="$(
cd ..
pwd
)"
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
add a comment |
A few ideas:
parent="$(dirname "$(pwd)")"
parent="$(
cd ..
pwd
)"
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
A few ideas:
parent="$(dirname "$(pwd)")"
parent="$(
cd ..
pwd
)"
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
answered 15 hours ago
ctrl-alt-delorctrl-alt-delor
11.6k42159
11.6k42159
add a comment |
add a comment |
You could first cd to .. and then use the $PWD.
answered 15 hours ago
TomaszTomasz
9,59652965
add a comment |
You could first cd to .. and then use the $PWD.
answered 15 hours ago
TomaszTomasz
9,59652965
add a comment |
You could first cd to .. and then use the $PWD.
answered 15 hours ago
TomaszTomasz
9,59652965
You could first cd to .. and then use the $PWD.
answered 15 hours ago
TomaszTomasz
9,59652965
answered 15 hours ago
TomaszTomasz
9,59652965
answered 15 hours ago
TomaszTomasz
9,59652965
answered 15 hours ago
TomaszTomasz
9,59652965
9,59652965
add a comment |
add a comment |
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Try the
realpathcommand if it is available.– Bodo
15 hours ago
@Bodo realpath works good in this case.
– Alex Kuchin
15 hours ago