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    I have a HTML with lots of data and part I am interested in: <tr valign=top> <td><b>Total</b></td> < ... '<td align=right> 0' Any suggestions? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Is there an easy way to list only directories under a given directory in Linux? To explain better, I can do: ... that does not use bash loops. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am very, very new to UNIX programming (running on MacOSX Mountain Lion via Terminal). I've been learning ... be greatly appreciated! Thanks!! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I often use something like read -e -p "> All good ? (y/n)" -n 1 confirm; to ask a confirm to the user. ... man page :( -r option doesn't work) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I saw a client doing $bash -x command to see if the file is executable (or ksh -x command, etc.) ... comments are greatly appreciated. Cheers! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    My default editor is Pico at my server. I use Bash and Linux. I tried to change Vim to be my default ... file .bashrc: export EDITOR='vim' See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    When I enter brew doctor (or any brew command) in my terminal, I get this as a response: -bash: /usr/local/bin/ ... Is there a way to fix this? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    my idea is to create a google sheet, make it public and then access it from my work computer linux/bash to ... explain this method step by step? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am using 'tail -f' to follow a log file as it's updated; next I pipe the output of that to grep to ... for input (in case you were wondering). See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I've noticed several posts on this site which say that with gnu sed you should use ( and ) in regex rather than ( ... ) must be used. What's up? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I was trying to use sed to count all the lines based on a particular extension. find -name '*.m' -exec ... particular line to get the totals. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I often interactively loop over e.g. my files and want to perform a specific operation on all of them, let's ... it might be too late already. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    It turns out that iptables doesn't handle leading zeros too well. As $machinenumber that is used has to ... ERROR - Unknown string operation See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to generate System.map from vmlinuz,cause most of machines don't have the file System.map.In fact, ... records in 32768+0 records out See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Just tests a very simple command like: while true; do bash -c "echo hello"; done You will find how much ... problem user 0m0.091s sys 0m0.476s See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to play around with netcat to learn more about how HTTP works. I'd like to script some of it ... not sure what causes this behavior. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    bash allows $'string' expansion. My man bash says: Words of the form $'string' are treated specially. The word ... behave as echo -e 'foobar'? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a directory myDir of many .html files. I am trying to create an array of all the files in ... appreciate any help regarding this matter. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Here is my cron job: plee@dragon:~$ crontab -l * * * * * /bin/bash -l -c 'source ~/.bashrc; echo ... source .bashrc; echo $EDITOR # Output: vim See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I need to create three variables, each for Year, Month, and Day for Today's date, minus X number of ... working days instead 222 regular days. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    So basically, I'm trying to write a series of scripts to interact with Dot Net Nuke. I've been analysing the ... "Kept-Secret" "Kept-Secret" See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    How should I change this to check whether val has an even or odd numeric value? val=2 if $((RANDOM % $val)); ... See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Consider a text file with scientific data, e.g.: 5.787037037037037063e-02 2.048402977658663748e-01 1. ... am using Ubuntu/Linux. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am trying to get the pid of a currently executing subshell - but $$ is only returning the parent pid: #!/usr ... do $! from the parent shell. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm fairly new to Linux (CentOS in this case). I have a folder with about 2000 files in it. I'd like ... simply do it from the command prompt. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I need to allow several applications to append to a system variable ($PYTHONPATH in this case). I'm thinking of ... it doesn't appear to work. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    If I do $ ls -l --color=always I get a list of files inside the directory with some nice colouring for ... a stock install with no fancy configs See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have the following bash script which repeats for each image found. It needs to iterated over all html, css and ... what could be wrong here? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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