⇤ ← Revision 1 as of 2007-05-02 23:17:12
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clean up, add perl alternative
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== How can I display value of a symbolic link on standard output? == The external command {{{readlink}}} can be used to display the value of a symbolic link. |
== How can I display the target of a symbolic link? == The nonstandard external command {{{readlink(1)}}} can be used to display the target of a symbolic link: |
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you can also use GNU find's %l directive, which is especially useful if you need to resolve links in batches: | If you don't have `readlink`, you can use Perl: {{{ perl -e 'print readlink "/bin/sh", "\n"' }}} |
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You can also use GNU [:UsingFind:find]'s `-printf %l` directive, which is especially useful if you need to resolve links in batches: | |
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If your system lacks {{{readlink}}}, you can use a function like this one: | If your system lacks both {{{readlink}}} and Perl, you can use a function like this one: |
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# Bash | |
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However, this can fail if a symbolic link contains " -> " in its target. |
How can I display the target of a symbolic link?
The nonstandard external command readlink(1) can be used to display the target of a symbolic link:
$ readlink /bin/sh bash
If you don't have readlink, you can use Perl:
perl -e 'print readlink "/bin/sh", "\n"'
You can also use GNU [:UsingFind:find]'s -printf %l directive, which is especially useful if you need to resolve links in batches:
$ find /bin/ -type l -printf '%p points to %l\n' /bin/sh points to bash /bin/bunzip2 points to bzip2 ...
If your system lacks both readlink and Perl, you can use a function like this one:
# Bash readlink() { local path=$1 ll if [ -L "$path" ]; then ll="$(LC_ALL=C ls -l "$path" 2> /dev/null)" && echo "${ll/* -> }" else return 1 fi }
However, this can fail if a symbolic link contains " -> " in its target.