37 lines
768 B
Plaintext
37 lines
768 B
Plaintext
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#!/bin/bash
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#mount_dir="$(mktemp -d /tmp/ramdisk.XXXX)"
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mount_dir="/tmp/ramdisk"
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mkdir "$mount_dir"
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img_file="$mount_dir/img"
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if [[ ! -f "$1" ]]; then
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echo "'$1' is an invalid file"
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exit 1
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fi
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# create tmpfs and copy the file on it
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img_size="$(stat --printf="%s" "$1")"
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sudo mount -t tmpfs size=$img_size,noexec,nosid,uid=$UID,gid=$GID "$mount_dir"
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cp "$1" "$img_file"
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read -p "press enter to unmount"
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# check if the file is in use
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while lsof "$mount_dir" | grep -q "$mount_dir"; do
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echo "Device is busy"
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read -p "press enter to unmount"
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done
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# save the image to disk
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if cp "$img_file" "$1.tmp"; then
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mv "$1.tmp" "$1"
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else
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echo "Error copying '$img_file' back to disk!"
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exit 1
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fi
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# cleanup
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sudo umount "$mount_dir"
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rmdir "$mount_dir"
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