大约有 40,000 项符合查询结果（耗时：0.0159秒） [XML]
While loop to test if a file exists in bash
... if the file actually exists by adding:
while [ ! -f /tmp/list.txt ]
do
sleep 2 # or less like 0.2
done
ls -l /tmp/list.txt
You might also make sure that you're using a Bash (or related) shell by typing 'echo $SHELL'. I think that CSH and TCSH use a slightly different semantic for this loop.
...
top -c command in linux to filter processes listed based on processname
...: toggle full path vs. command name
'k' : kill by PID
'F' : filter by... select with arrows... then press 's' to set the sort
the answer below is good too... I was looking for that today but couldn't find it. Thanks
share...
Exception thrown inside catch block - will it be caught again?
...lause of the try statement, then the first (leftmost) such catch clause is selected. The value V is assigned to the parameter of the selected catch clause, and the Block of that catch clause is executed. If that block completes normally, then the try statement completes normally; if that block compl...
Wait for a process to finish
... @AlexanderMills, if you can tolerate your macOS system not going to sleep as the command executes, caffeinate -w $pid will do the trick.
– zneak
Sep 20 '18 at 1:07
...
When does Java's Thread.sleep throw InterruptedException?
When does Java's Thread.sleep throw InterruptedException? Is it safe to ignore it? I am not doing any multithreading. I just want to wait for a few seconds before retrying some operation.
...
Timeout a command in bash without unnecessary delay
...AY seconds.
As of today, Bash does not support floating point arithmetic (sleep does),
therefore all delay/time values must be integers.
EOF
}
# Options.
while getopts ":t:i:d:" option; do
case "$option" in
t) timeout=$OPTARG ;;
i) interval=$OPTARG ;;
d) delay=$OPTARG ;...
How to add a progress bar to a shell script?
...es like \r.
Here's a demo:
echo -ne '##### (33%)\r'
sleep 1
echo -ne '############# (66%)\r'
sleep 1
echo -ne '####################### (100%)\r'
echo -ne '\n'
In a comment below, puk mentions this "fails" if you start with a long line and then want to write a s...
Repeat command automatically in Linux
...
while true; do
sleep 5
ls -l
done
share
|
improve this answer
|
follow
|
...
Is there a Sleep/Pause/Wait function in JavaScript? [duplicate]
Is there a JavaScript function that simulates the operation of the sleep function in PHP — a function that pauses code execution for x milliseconds, and then resumes where it left off?
...
App Inventor 2 模拟sleep函数 · App Inventor 2 中文网
...
App Inventor 2 模拟sleep函数
App Inventor 2 模拟sleep函数
需要用到计时器组件：
实现代码如下：
测试方法如下：
代码快速导入技巧
...