shell

问题 I am trying to mv a file (rename it to replace spaces with dashes). If I pass the source and dest arguments without quotes, the source is broken up because mv thinks it is the end of the argument. If I surround source and dest with arguments, mv reports that the source can't be found. Currently, $1 and $2 have hardcoded quotes at the beginning and end. $onam and $dnam are the equivalents without the hardcoded quotes. This command from a prompt works perfectly because source and dest are

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . Improve this question Running this command (where a.out is a valid C executable): . a.out ...results in this error: bash: .: a.out: cannot execute binary file However, running the following command: ./a.out ...successfully executes the C binary executable. Clearly, there are 2 types of

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . Improve this question Running this command (where a.out is a valid C executable): . a.out ...results in this error: bash: .: a.out: cannot execute binary file However, running the following command: ./a.out ...successfully executes the C binary executable. Clearly, there are 2 types of

问题 For Android there is ADB (Android debug bridge) which allows to get a shell on the connected device: adb shell Is there something similar for iOS? I'd like to type some shell commands on my Mac that would be executed on the connected iPhone. Is there a built-in Terminal on iPhone? 回答1: There isn't anything for it built in, but if you are jailbroken or can sideload apps (a.k.a., you have a mac with XCode), you can run a local terminal with apps like MobileTerminal, which aren't available on

问题 This may not be the most thought provoking question, but nevertheless has struck my curiosity. I have not been able to come across any answer (let alone a definitive one) on the web. While reading Advanced Shell Scripting, I came across this section regarding command line positional arguments which states that anything after the the ninth argument must be surrounded by ${} (the longer form of variable referencing/substitution). Simply put, why must you reference command line argument ten (and

问题 I've got the following shell script that's supposed to simply stage a few Java .ear/.war files to JBoss: SUCCESS=false DEPLOY_PATH=/apps/jboss/server/default/deploy E_NOARGS=75 M_USAGE="usage: $0 {rcm|hcm}" M_MISSING_RCM="missing: rcm.war file not present" M_MISSING_HCM="missing: hcm.ear or hcm.war file not present" if [ -z "$1" ] then echo $M_USAGE exit $E_NOARGS else M_START="deploying $1 ..." M_FINISH="finished deploying $1" fi until [ -z "$1" ] do echo $M_START case "$1" in rcm*) # do a

问题 I have two files both in the format of: loc1 num1 num2 loc2 num3 num4 The first column is the location and I want to use the order of the locations in the first file to sort the second file so that I can put the two files together where the numbers are right for the location. I can write a perl script to do this but I felt there might be some quick/easy shell/awk command to achieve this. Do you have any ideas? Thanks. Edits: Here is the input, now I actually want to use column 2 in file 1 to

问题 I have two files both in the format of: loc1 num1 num2 loc2 num3 num4 The first column is the location and I want to use the order of the locations in the first file to sort the second file so that I can put the two files together where the numbers are right for the location. I can write a perl script to do this but I felt there might be some quick/easy shell/awk command to achieve this. Do you have any ideas? Thanks. Edits: Here is the input, now I actually want to use column 2 in file 1 to

问题 I have made a small automator script that runs a bash shell script and gets two outputs... On viewing results it appears like this below... I want them in two automator variables Assume I used a script like echo "200" echo "19 hours, 4 minutes and 42.765 seconds" and on viewing the results it shows this (and I want each of these as automator variables called count and duration ). I want it to be sent to a display notification with subtitle as " count files processed" and message as " duration

问题 I have made a small automator script that runs a bash shell script and gets two outputs... On viewing results it appears like this below... I want them in two automator variables Assume I used a script like echo "200" echo "19 hours, 4 minutes and 42.765 seconds" and on viewing the results it shows this (and I want each of these as automator variables called count and duration ). I want it to be sent to a display notification with subtitle as " count files processed" and message as " duration