mirror of https://github.com/tLDP/LDP
48 lines
770 B
Bash
48 lines
770 B
Bash
#!/bin/bash
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# Starting the script with "#!/bin/bash -r"
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#+ runs entire script in restricted mode.
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echo
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echo "Changing directory."
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cd /usr/local
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echo "Now in `pwd`"
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echo "Coming back home."
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cd
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echo "Now in `pwd`"
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echo
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# Everything up to here in normal, unrestricted mode.
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set -r
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# set --restricted has same effect.
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echo "==> Now in restricted mode. <=="
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echo
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echo
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echo "Attempting directory change in restricted mode."
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cd ..
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echo "Still in `pwd`"
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echo
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echo
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echo "\$SHELL = $SHELL"
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echo "Attempting to change shell in restricted mode."
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SHELL="/bin/ash"
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echo
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echo "\$SHELL= $SHELL"
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echo
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echo
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echo "Attempting to redirect output in restricted mode."
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ls -l /usr/bin > bin.files
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ls -l bin.files # Try to list attempted file creation effort.
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echo
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exit 0
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