bash

问题 As a rather novice Linux user, I can't seem to find how to do this. I am trying to move unique files all in one directory into another directory. Example: $ ls vehicle car.txt bicycle.txt airplane.html train.docx (more files) I want car.txt, bicycle.txt, airplane.html, and train.docx inside vehicle. Right now I do this by moving the files individually: $ mv car.txt vehicle $ mv bicycle.txt vehicle ... How can I do this in one line? 回答1: You can do mv car.txt bicycle.txt vehicle/ (Note that

问题 script1.sh: #!/bin/bash ./script2.sh echo after-script script2.sh: #!/bin/bash function handler { exit 130 } trap handler SIGINT while true; do true; done When I start script1.sh from a terminal, and then use Ctrl + C to send SIGINT to its process group, the signal is trapped by script2.sh and when script2.sh terminates, script1.sh prints "after-script". However, I would have expected script1.sh to immediately terminate after the line that invokes script2.sh. Why is this not the case in this

问题 script1.sh: #!/bin/bash ./script2.sh echo after-script script2.sh: #!/bin/bash function handler { exit 130 } trap handler SIGINT while true; do true; done When I start script1.sh from a terminal, and then use Ctrl + C to send SIGINT to its process group, the signal is trapped by script2.sh and when script2.sh terminates, script1.sh prints "after-script". However, I would have expected script1.sh to immediately terminate after the line that invokes script2.sh. Why is this not the case in this

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 8 months ago . Improve this question I was trying to modify the ~/.profile file to add a line to the PATH variable. I added this line: PATH=$PATH:/home/paul/avatar-gf-1.0-ea/glassfish4/bin/ at the end. I restarted the terminal, but it still did not identify commands in that directory. Does anyone

问题 In Linux, I know how to write a simply message to the /var/log/messages file, in a simple shell script I created: #!/bin/bash logger "have fun!" I want to stop throwing messages into the default /var/log/messages file, and create my own. I tried this: #!/bin/bash logger "have more fun" > /var/log/mycustomlog It still logs to /var/log/messages . It did create the /var/log/mycustomlog , but it's empty. Anyone see what I'm missing? 回答1: logger logs to syslog facilities. If you want the message

问题 How do you exclude a folder when performing file operations i.e. cp etc. I would currently use the wild card * to apply file operation to all, but I need to exclude one single folder. The command I'm actually wanting to use is chown to change the owner of all the files in a directory but I need to exclude one sub directory. 回答1: If you're using bash and enable extglob via shopt -s extglob then you can use !(<pattern>) to exclude the given pattern. 回答2: find dir_to_start -name dir_to_exclude

问题 In bash I can create a script with a here-doc like so as per this site: http://tldp.org/LDP/abs/html/abs-guide.html#GENERATESCRIPT ( cat <<'EOF' #!/bin/bash #? [ ] / \ = + < > : ; " , * | #/ ? < > \ : * | ” #Filename="z:"${$winFn//\//\\} echo "This is a generated shell script." App='eval wine "C:\Program Files\foxit\Foxit Reader.exe" "'$winFn'"' $App EOF ) > $OUTFILE If my $OUTFILE is a directory requiring sudo privileges where do I put the sudo command or what else can I do to make it work?

问题 In bash I can create a script with a here-doc like so as per this site: http://tldp.org/LDP/abs/html/abs-guide.html#GENERATESCRIPT ( cat <<'EOF' #!/bin/bash #? [ ] / \ = + < > : ; " , * | #/ ? < > \ : * | ” #Filename="z:"${$winFn//\//\\} echo "This is a generated shell script." App='eval wine "C:\Program Files\foxit\Foxit Reader.exe" "'$winFn'"' $App EOF ) > $OUTFILE If my $OUTFILE is a directory requiring sudo privileges where do I put the sudo command or what else can I do to make it work?

问题 I've got to get a directory listing that contains about 2 million files, but when I do an ls command on it nothing comes back. I've waited 3 hours. I've tried ls | tee directory.txt , but that seems to hang forever. I assume the server is doing a lot of inode sorting. Is there any way to speed up the ls command to just get a directory listing of filenames? I don't care about size, dates, permission or the like at this time. 回答1: ls -U will do the ls without sorting. 回答2: Try using: find .

问题 I am attempting to run a block of code if one flag is set to true and the other is set to false. ie var1=true var2=false if [[ $var1 && ! $var2 ]]; then var2="something"; fi Since that did not evaluate the way that I expected I wrote several other test cases and I am having a hard time understanding how they are being evaluated. aa=true bb=false cc="python" if [[ "$aa" ]]; then echo "Test0" ; fi if [[ "$bb" ]]; then echo "Test0.1" ; fi if [[ !"$aa" ]]; then echo "Test0.2" ; fi if [[ ! "$aa" ]