1>&2 exit 1 fi if [ $# -gt 1 ]; then # Fire up the background jobs for myid in $*; do $0 $myid & done # Now wait for the background scripts to finish wait exit 0 fi id=$1 echo "PID $$ ($id) - Hello world, on $(date)." sleep 5 Example run: $ ./myscript.sh...
从Ansible-playbook中的bash-script启动后台循环可以通过以下步骤实现: 1. 创建一个Ansible playbook文件,例如`start_background_loop...
我的测试表明,某些命令需要很长时间,所以我将它们从.bash_profile转移到一个新的脚本.bash_profile_load_in_background中。# slow stuff here在.bash_prof 浏览0提问于2021-08-10得票数2 1回答 bash函数在后台运行命令 、、 与此相关的问题:Cannot makebashscript work from cloud-init 我尝试了各种变体,如下...
# PNG files in dir. for file in ~/Pictures/*.png; do printf '%s\n' "$file" done # Iterate over directories. for dir in ~/Downloads/*/; do printf '%s\n' "$dir" done # Brace Expansion. for file in /path/to/parentdir/{file1,file2,subdir/file3}; do printf '%s\n' "$fil...
job (vim) back again. Note that the process is paused, so if you’re running something like tail on a file, the process will have some catching up to do. If you have multiple jobs running in the background fg 3 , for example, will resume the 3rd job. Don’t forget to run the ...
与号(Run job in background[ampersand])。 如果命令后面跟上一个&符号,这个命令将会在后台运行。 有的时候,脚本中在一条在后台运行的命令可能会引起脚本挂起,等待输入,出现这种情况可以在原有的脚本后面使用wait命令来修复。 42. &&,|| 逻辑操作符
job control: 将程序运行设置为 前台运行(foreground)或后台运行(background) Shell Scripts & wildcard, 可以编写脚本程序,命令可以结合统配符,ls -l /usr/bin/X* --》查询X开头的文件 type# 查看命令类型是否是内置命令 Copy type[-tpa] name -t :查看命令类型 file-外部alias-别名builtin-内建 ...
与号(Run job in background[ampersand])。 如果命令后面跟上一个&符号,这个命令将会在后台运行。 && || 逻辑操作符(logical operator)。 在测试结构中,可以用这两个操作符来进行连接两个逻辑值。||是当测试条件有一个为真时返回0(真),全假为假;&&是当测试条件两个都为真时返回真(0),有假为假。
/bin/bash2# Script to collect the status of lshw output from home servers3# Dependencies:4# * LSHW: http://ezix.org/project/wiki/HardwareLiSter5# * JQ: http://stedolan.github.io/jq/6#7# On each machine you can run something like this from cron (Don't know CRON, no worries: ...
你可以这样做: #!/usr/bin/env bash# Our USR1 signal handlerusr1_trap(){ printf 'Here is the PID: %d\nExiting right-now!\n' $$ exit}# Register USR1 signal handlertrap usr1_trap USR1printf 'Run this to stop me:\nkill -USR1 %d\n' $$# Wait in background, not consuming CPUwh...