1. shell脚本if中判断大于、小于、等于、不等于的符号
   
   脚本有问题，有没有哪位大佬能帮忙检查一下？

#!/bin/bash

#run_num=$(squeue | grep shifting | wc -l)
run_num=`squeue | grep shifting | wc -l`
#run_num=$(squeue | grep shifting | wc -l 2>&1)

while true;do
    #if [ $(echo "$run_num") -eq 0 ];then
        for i in $(seq 2 9);do
            name=$(printf len300_0%d $i)
            cd $name || exit 1
            #model_num=$(ls *model.pdb | wc -l)
            model_num=$(ls -l *model.pdb 2>/dev/null | wc -l)
            if [ $(echo "$model_num") -eq 1200 ];then
                cd ../ || exit 1
            elif [ $(echo "$model_num") -eq 0 ]&&[ $(echo "$run_num") -le 197 ];then
                #filepath=$(pwd)
                cd Submit
                nohup python submit.py & 
                cd ../../
            fi
        done
    #fi       
    sleep 300
done    

#!/bin/bash


while true; do
    folder_completed=false

    for i in $(seq 2 9); do
        name=$(printf len300_0%d $i)
        cd $name || exit 1

        model_num=$(ls -l *model.pdb 2>/dev/null | wc -l)

        run_num=$(squeue | grep shifting | wc -l)
        if [ "$model_num" -eq 1200 ]; then
            cd ../ || exit 1
            folder_completed=true
            break  # 终止内层循环，避免继续检查其他文件夹
        elif [ "$model_num" -eq 0 ] && [ "$run_num" -le 197 ]; then
            cd Submit
            nohup python submit.py &
            cd ../../
            folder_completed=true
            break  # 终止内层循环，避免继续检查其他文件夹
        fi

        #cd ../ || exit 1
    done

    # 如果当前文件夹已完成，就不要进行休眠和外层循环的下一次迭代
    if [ "$folder_completed" = true ]; then
        continue
    fi

    sleep 1800
done