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← Revision 7 as of 2013-07-26 22:44:57 ⇥
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Comment: simplify `perl`, add missing `--`, `-d` won't harm here either.
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| [[Anchor(faq29)]] == 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. |
<<Anchor(faq29)>> == 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 -le 'print readlink "/bin/sh"' }}} |
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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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| ll="$(LC_ALL=C ls -l "$path" 2> /dev/null)" && echo "${ll/* -> }" |
ll=$(LC_ALL=C ls -ld -- "$path" 2>/dev/null) && printf '%s\n' "${ll#* -> }" |
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However, this can fail if a symbolic link contains " -> " in its name. ---- CategoryShell |
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 -le 'print readlink "/bin/sh"'
You can also use GNU 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=$(LC_ALL=C ls -ld -- "$path" 2>/dev/null) &&
printf '%s\n' "${ll#* -> }"
else
return 1
fi
}However, this can fail if a symbolic link contains " -> " in its name.