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    How do i know, if a process has completed its execution without any errors? How do i know, if a C++ ... processes (of other users too)? 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'd like to replace one string from one file with a string from another file. Though I'm not experienced with ... .3.4 Please update this 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 have files in HDFS as: drwxrwx--- - root supergroup 0 2016-08-19 06:21 /tmp/logs/root/logs/ ... these files into my local machine. 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 scenario. I have two files which are having records with each record's 3-25 characters is an ... help me out thanks in advance See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Shouldn't the standard input for different process unique? If so, shouldn't the path of the stdin file be ... anyone have ideas about 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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    Hi I would like to use AWK or Perl to get an output file in the format below. My input file is a space ... to the actual file I am working on 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 would like to utilize CPU cores from multiple nodes to execute a single R script. Each node contains 16 cores ... use of another R package? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    What does <<< mean in this command line? bc <<< "1 + 1" It doesn't seem to a combination of < and <<, ... bc Also works in ksh, but not in sh. 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 converting timestamps to EPOCH seconds in awk, getting incorrect output for repeated timestamps Input ... 1529012721 1529012721 1529012721 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 building a script that tries to run some commands on a server (over SSH), and writes on the ... previous command failed in this context? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    To make my code portable, I try to use printf rather than echo. But then printf "-dogs-cats" returns an ... in other Unix flavors as well. 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 know there is not a direct way to take a screen shot of a web page with PHP. What would be the ... other methods if anyone knows of anything. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    This sounds ridiculously easy, and it is with other shells. But I can't seem to figure out how to get echo to ... is my file Thanks in advance. 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 building openssl-1.0.2f with openssl-fips-2.0.12 (I am going to talk about this configuration in the ... way only: PA-RISC -> IA64. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    actually I know no thing about serial port. but I see an example of sending it an at-command: echo -e ... sometimes replace it with /dev/ttyS0. 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 shell script, with a list of shell variables, which is executed before entering a programming environment ... variables are not set. 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 would like to write in one line this: if [$SERVICESTATEID$ -eq 2]; then echo "CRITICAL"; else echo "OK"; fi ... found OK So it 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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    We are being taught xv6 in our course. Currently we use to login to linux server of our school using putty in ... , compile and run) and how? 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 file in the following format: col1|col2|col3|col4 a|b|c|d e|f||h i|j|k|l I would like to delete col3 ( ... col2|col4 a|b|d e|f|h i|j|l 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 a Linux equivalent of the Win32 API _splitpath function? Details: void _splitpath ( const char *path, ... and extension as output. 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 working on a cluster where a dataset is kept in hdfs in distributed manner. Here is what I have: [ ... out the total number of lines? 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 assign an optarg value to an int, but the compiler gives me the following warning: warning: assignment ... ", n); return 0; } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    We know that when a process is created,one stack is allocated for this process.The size of the stack is ... space or from system space? 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 developing a program which executes a program using execvp. It needs to capture the results of the child ... I'd greatly appreciate it. 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'd like to use grep on a text file with -f to match a long list (10,000) of patterns. Turns out ... line. Thank you everyone for your guidance. 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 aware that it is not possible to echo the * while you type in standard ANSI C. But is there a way to ... possible in C? If it is, how? 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 seen both: #!/path/... #! /path/... What's right? Does it matter? Is there a history? I've heard ... for all I know. Thus I asked it 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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    I use cygwin on windows 8.1 to have an Unix shell. But I cannot run commands such as npm from it. What ... looks actually more like a npm issue. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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