所以不久前我一直在试验Bash,我想操纵“运行时间”命令的输出。例如,如果正常运行时间为5分钟,我设法将x分钟的输出更改为0:05,但是其余的一切消失了。
在不影响当前正常运行时间输出的情况下,我还应该使用哪种方法显示时间,用户数量及其平均负载。
这是所需的输出:21:08:13向上0:10,3个用户,平均负载:0.30,0.30,0.25
任何帮助将不胜感激!
since="`uptime --since`"
start="`date --date "$since" '+%s'`"
now="`date '+%s'`"
sec=$((now-start))
days=$((sec/(60*60*24)))
sec=$((sec-days*(60*60*24)))
hr=$((sec/(60*60)))
sec=$((sec-hr*(60*60)))
min=$((sec/60))
sec=$((sec-min*60))
rest="$(uptime | perl -npe'{s/(.*,\s+)(\d+\s+user)/$2/}')"
printf "%d(days), %02d:%02d:%02d(hms), %s\n" $days $hr $min $sec "$rest"
当前输出
0(days), 00:34:00(hms), 3 users, load average: 0.09, 0.14, 0.14
答案 0 :(得分:1)
这可能是一种只使用正常运行时间,日期以及当然使用bash的方式:
#!/bin/bash
since="`uptime --since`"
start="`date --date "$since" '+%s'`"
now="`date '+%s'`"
sec=$((now-start))
days=$((sec/(60*60*24)))
sec=$((sec-days*(60*60*24)))
hr=$((sec/(60*60)))
sec=$((sec-hr*(60*60)))
min=$((sec/60))
sec=$((sec-min*60))
printf "%d(days), %02d:%02d:%02d(hms)\n" $days $hr $min $sec
答案 1 :(得分:1)
使用您的输出到名为date的文件中,我尝试了此操作:
# Calculate the upper bound for the random number generator
# upper_bound = 1,000,000
upper_bound = 10**6
# n will be an integer with a minimum possible value of 0,
# and a maximum possible value of 999,999
n = SecureRandom.random_number(upper_bound)
# Convert the integer n to a string
# unpadded_str will be "0" if n == 0
# unpadded_str will be "999999" if n == 999999
unpadded_str = n.to_s
# Pad the string with leading zeroes if it is less than
# 6 digits long.
# "0" would be padded to "000000"
# "123" would be padded to "000123"
# "999999" would not be padded, and remains unchanged as "999999"
padded_str = unpadded_str.rjust(6, '0')