How to 'grep' a continuous stream?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Isthatpossibletousegreponacontinuousstream? WhatImeanissortofatail-f<file>command,butwithgrepontheoutputinordert......
Inner join on two text files
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Lookingtoperformaninnerjoinontwodifferenttextfiles.BasicallyI\'mlookingfortheinnerjoinequivalentoftheGNUjoinprogram.D......
Regex (grep) for multi-line search needed [duplica
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: PossibleDuplicate: HowcanIsearchforamultilinepatterninafile?Usepcregrep I\'mrunningagreptofindany*.sqlfilet......
How to change the output color of echo in Linux
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iamtryingtoprintatextintheterminalusingechocommand. Iwanttoprintthetextinaredcolor.HowcanIdothat? 回答1: You......
Setting an argument with bash
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ifrequentlyrunasimplebashcommand: rpm-Uvh--define\"_transaction_color3\"myPackage.rpm whichworksproperly. ButnowI\'mtryin......
How to get CRON to call in the correct PATHs
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mtryingtogetcrontocallinthecorrectPATHs.WhenIrunaPythonscriptfromshellthescriptrunsfineasitusesthePATHssetin......
Use expect in bash script to provide password to S
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: TothosewhowanttoreplythatIshoulduseSSHkeyspleaseabstain I\'mtryingtouseexpectinanbashscripttoprovidetheSSHpassword......
How to compare two strings in dot separated versio
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Isthereanywaytocomparesuchstringsonbash,e.g.:2.4.5and2.8and2.4.5.1? 回答1: HereisapureBashversionthatdoesn\'trequi......
How do I test if a variable is a number in Bash?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ijustcan\'tfigureouthowdoImakesureanargumentpassedtomyscriptisanumberornot. AllIwanttodoissomethinglikethis: te......
Argument list too long error for rm, cp, mv comman
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IhaveseveralhundredPDFsunderadirectoryinUNIX.ThenamesofthePDFsarereallylong(approx.60chars). WhenItrytodeleteallPD......
sed in-place flag that works both on Mac (BSD) and
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Isthereaninvocationofsedtodoin-placeeditingwithoutbackupsthatworksbothonLinuxandMac?WhiletheBSDsedshippedwithOSXsee......
What killed my process and why?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: MyapplicationrunsasabackgroundprocessonLinux.ItiscurrentlystartedatthecommandlineinaTerminalwindow. Recentlyauserwas......
How do I write stderr to a file while using “tee”
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iknowhowtouseteetowritetheoutput(STDOUT)ofaaa.shtobbb.out,whilestilldisplayingitintheterminal: ./aaa.sh|teebbb.out ......
Where can I set environment variables that crontab
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihaveacrontabrunningeveryhour.Theuserrunningithasenvironmentvariablessinthe.bash_profilethatworkwhentheuserrunsthejob......
How do I prompt for Yes/No/Cancel input in a Linux
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iwanttopauseinputinashellscript,andprompttheuserforchoices.Thestandard\'Yes,No,orCancel\'typequestion.HowdoIaccompl......