Linux查看程序打开文件个数
很好的方法有2中 1.嵌入式Linux lsof -n |awk '{print $2}'|sort|uniq -c |sort -nr|more 2.正式的Linux系统 lsof -c 程序名称 |wc -l lsof -p 进程id |wc -l 查看所有进程的文件打开数 lsof |wc -l 来源： CSDN 作者： cyd411 链接： https://blog.csdn.net/cyd411/article/details/103732974
wc
How can I compare 3 files together (to see what is in common between them)?
问题 I want to compare 3 files together to see how much of the information in the files are the same. The file format is something like this: Chr11 447 . A C 74 . DP=22;AF1=1;CI95=1,1;DP4=0,0,9,8;MQ=15;FQ=-78 GT:PL:GQ 1/1:107,51,0:99 Chr10 449 . G C 35 . DP=26;AF1=0.5;CI95=0.5,0.5;DP4=5,0,7,8;MQ=20;FQ=11.3;PV4=0.055,0.0083,0.028,1 GT:PL:GQ 0/1:65,0,38:41 Chr12 517 . G A 222 . DP=122;AF1=1;CI95=1,1;DP4=0,0,77,40;MQ=23;FQ=-282 GT:PL:GQ 1/1:255,255,0:99 Chr10 761 . G A 41 . DP=93;AF1=0.5;CI95=0.5,0.5
markdown教程
【文章如有侵权、未引用出处、有更好资料等请及时联系126邮箱名whaozl(微信) 或 留言评论】 命令 含义 export CUDA_VISIBLE_DEVICES=0,1 设置GPU可见设备 dos2unix demo.txt 将window换行符切换到linux格式 wc -l `find . -name "key_groupby.txt"` 查找文件，统计每个文件行数 wc -l `find . -name *text_seg_check.txt` 查找文件，统计每个文件行数 wc -l `find . -name .*pred.txt` 查找文件，统计每个文件行数 在表格中 可以用 左右两个``将其中的双引号 或者 其中的`给转移直接显示 将word中的表格转换为markdown 表格方法 复制到notepad++中替换 来源： CSDN 作者： zhulinniao 链接： https://blog.csdn.net/zhulinniao/article/details/103219009
wc -m in unix adds one character
问题 Counting a line with 4 characters with no new line character: ACTG wc -m gives me 5. With echo, I can fix this problem so echo -n 'ACTG' | wc -m But if ACTG is in a text file with no new line character, I get 5. Why is that so? $ ls -l file -rw-rw-r-- 1 user user 5 Feb 11 15:27 file $ hexdump -C file 00000000 41 42 43 44 0a |ABCD.| 00000005 回答1: As hexdump has shown you, whatever editor you are using is adding a '\n' or 0x0A (new line) character at the end of the line when you save the file,
Linux 统计文件夹下文件个数及目录个数
1. 统计文件夹下文件的个数 ls -l | grep "^-" | wc -l 2.统计文件夹下目录的个数 ls -l | grep "^d" | wc -l 3. 统计文件夹下文件个数，包括子文件 ls -lR | grep "^-" | wc -l 4. 统计文件夹下目录个数，包括子目录 ls -lR | grep "^d" | wc -l wc命令： (Word Count)功能为统计指定文件中的字节数、字数、行数，并将统计结果显示输出。 wc [-lcw] -c 统计字节数 -l 统计行数 -m 统计字符数，此标志不能与-c标志一起使用 -w 统计字数。一个字定义为由空白、跳格或换行字符分隔的字符串 来源： https://www.cnblogs.com/sssblog/p/9700808.html
Whats is the behaviour of the “wc” command?
问题 For example: myCleanVar=$( wc -l < myFile ) myDirtVar=$( wc -l myFile ) echo $myCleanVar 9 echo $myDirtVar 9 myFile why in "myCleanVar" I get an "integer" value from the "wc" command and in "myDirtVar" I get something like as: "9 file.txt"? I quoted "integer" because in know that in Bash shell by default all is treated as a string, but can't understand the differences of the behaviour of first and second expression. What is the particular effect of the redirection "<" in this case? 回答1: wc
How to get “wc -l” to print just the number of lines without file name?
问题 wc -l file.txt outputs number of lines and file name. I need just the number itself (not the file name). I can do this wc -l file.txt | awk '{print $1}' But maybe there is a better way? 回答1: Try this way: wc -l < file.txt 回答2: cat file.txt | wc -l According to the man page (for the BSD version, I don't have a GNU version to check): If no files are specified, the standard input is used and no file name is displayed. The prompt will accept input until receiving EOF, or [^D] in most environments
Linux文件夹下文件统计命令
1. 统计当前文件夹下文件的个数 ls -l |grep "^-"|wc -l 2. 统计当前文件夹下目录的个数: ls -l |grep "^d"|wc -l 3. 统计当前文件夹下文件的个数，包括子文件夹里的 : ls -lR|grep "^-"|wc -l 4. 统计文件夹下目录的个数，包括子文件夹里的: ls -lR|grep "^d"|wc -l 5. 显示文件夹下文件（可能是目录、链接、设备文件等）信息 ls -l 7. 统计文件中内容的行数 wc -l 来源： https://www.cnblogs.com/Eng1ne-ty/p/12033565.html
Counting process instances with grep & wc [duplicate]
问题 This question already has answers here : Finding process count in Linux via command line (9 answers) Bash script counting instances of itself wrongly (4 answers) Closed last year . I am trying to count process instances using the following command: $ ps -ef | grep "test.sh" | egrep -v "grep|vi|more|pg" | wc -l 1 Which works perfectly on the command line, but in the script when I assign the output to a variable: script_instances=`ps -ef | grep "test.sh" | egrep -v "grep|vi|more|pg" | wc -l`
Finding number of lines of a data file using command line
问题 There is a conventional way to read each line one by one and check iostat hits nonzero or negative value at every reading. However, I would like to call system(command) routine and use wc -l command to count the number of and then want to allocate the dimension of the array where I want to put the data. For the example, I am printing the number of lines in both ways: Program Test_reading_lines integer:: count,ios, whatever character(LEN=100):: command Print*,'Reading number of lines in a