bol-van
1 year ago
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1 changed files with
5 additions and
3 deletions
-
install_bin.sh
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@ -16,13 +16,15 @@ check_dir() |
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if [ -f "$exe" ]; then |
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if [ -f "$exe" ]; then |
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if [ -x "$exe" ]; then |
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if [ -x "$exe" ]; then |
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# ash and dash try to execute invalid executables as a script. they interpret binary garbage with possible negative consequences |
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# ash and dash try to execute invalid executables as a script. they interpret binary garbage with possible negative consequences |
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# bash do not do this |
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# bash and zsh do not do this |
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if exists bash; then |
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if exists bash; then |
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out=$(echo 0.0.0.0 | bash -c "$exe" 2>/dev/null) |
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out=$(echo 0.0.0.0 | bash -c "$exe" 2>/dev/null) |
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elif exists zsh; then |
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out=$(echo 0.0.0.0 | zsh -c "$exe" 2>/dev/null) |
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else |
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else |
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# find do not use its own shell exec |
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# find does not use its own shell exec |
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# it uses execvp(). in musl libc it does not call shell, in glibc it DOES call /bin/sh |
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# it uses execvp(). in musl libc it does not call shell, in glibc it DOES call /bin/sh |
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# that's why prefer bash if present |
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# that's why prefer bash or zsh if present. otherwise it's our last chance |
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out=$(echo 0.0.0.0 | find "$dir" -maxdepth 1 -name ip2net -exec {} \; 2>/dev/null) |
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out=$(echo 0.0.0.0 | find "$dir" -maxdepth 1 -name ip2net -exec {} \; 2>/dev/null) |
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fi |
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fi |
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[ -n "$out" ] |
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[ -n "$out" ] |
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