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Bash Run in restricted mode Bash  Download (.zip)#!/bin/bash # Starting the script with "#!/bin/bash -r" # runs entire script in restricted mode. echo echo "Changing directory." cd /usr/local echo "Now in `pwd`" echo "Coming back home." cd echo "Now in `pwd`" echo # Everything up to here in normal, unrestricted mode. set -r # set --restricted has same effect. echo "==> Now in restricted mode. <==" echo echo echo "Attempting directory change in restricted mode." cd .. echo "Still in `pwd`" echo echo echo "\$SHELL = $SHELL" echo "Attempting to change shell in restricted mode." SHELL="/bin/ash" echo echo "\$SHELL= $SHELL" echo echo echo "Attempting to redirect output in restricted mode." ls -l /usr/bin > bin.files ls -l bin.files # Try to list attempted file creation effort. echo exit 0
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