我必須使用重定向和回顯命令從另一個 bash 腳本創建一個 bash 腳本 (mkbackup.sh)。該檔案是在正確的位置創建的，但是當我在 vi 上輸入它時，只有我輸入的最后一行 (fi) 在檔案中。我已經更改了授予 rwx 訪問權限的權限，您知道發生了什么嗎？
location=$(pwd)
echo "\"$location\"/\"$new_file\""
touch "$location"/"$new_file"/backups/mkbackup.sh
chmod rwx "$location"/"$new_file"/backups/mkbackup.sh
echo "#!/bin/bash" > "$location"/"$new_file"/backups/mkbackup.sh
echo "#MYNAME" > "$location"/"$new_file"/backups/mkbackup.sh
echo "#MYID" > "$location"/"$new_file"/backups/mkbackup.sh
echo "if [ $# -eq 0 ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp -r ../backup/ ../src/*.*" > "$location"/"$new_file"/backups/mkbackup.sh
echo "fi" > "$location"/"$new_file"/backups/mkbackup.sh
echo "if [ $# -eq 1 ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " echo \"$1\"" > "$location"/"$new_file"/backups/mkbackup.sh
echo " given_file=\"$1\"" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp \"$given_file\" ../src/" > "$location"/"$new_file"/backups/mkbackup.sh
echo "fi" > "$location"/"$new_file"/backups/mkbackup.sh
echo "if [ $# -eq 3 ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " if [\" $1\" == \"-z\" ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " tar -cf \"$2\" ../src/*.*" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp \"$2\" ../backups/" > "$location"/"$new_file"/backups/mkbackup.sh
echo " else" > "$location"/"$new_file"/backups/mkbackup.sh
echo " tar -zcf \"$2\" ../src/*.*" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp \"$2\" ../backups/" > "$location"/"$new_file"/backups/mkbackup.sh
echo " fi" > "$location"/"$new_file"/backups/mkbackup.sh
echo "fi" > "$location"/"$new_file"/backups/mkbackup.sh
echo "if [ $# -eq 4 ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " if [\" $1\" == \"-z\" ]; then" > "$location"/"$new_file"/backups/mkbackup.sh
echo " tar -cf \"$2\" ../src/\"$4\"" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp \"$2\" ../backups/" > "$location"/"$new_file"/backups/mkbackup.sh
echo " else" > "$location"/"$new_file"/backups/mkbackup.sh
echo " tar -zcf \"$2\" ../src/\"$4\"" > "$location"/"$new_file"/backups/mkbackup.sh
echo " cp \"$2\" ../backups/" > "$location"/"$new_file"/backups/mkbackup.sh
echo " fi" > "$location"/"$new_file"/backups/mkbackup.sh
謝謝！
uj5u.com熱心網友回復：
>截斷目標檔案，以便您撰寫的每一行都覆寫該檔案中以前的任何內容。你可以使用>>到附加到目標檔案，但是這整個事情會使用單是清潔cat程序寫信給你打開一個檔案一次，以及大大簡化參考。
target=$(pwd)/$new_file/backups/mkbackup.sh
cat <<EOF > "$target"
#!/bin/bash
#MYNAME
#MYID
if [ $# -eq 0 ]; then
cp -r ../backup/ ../src/*.*
fi
...
EOF
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