![]() ![]() $ md5sum install. It can be done in 10 seconds by doing this: $ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \ If you read the shell manual carefully, it basically says that variables (and a few other things) get expanded THEN it goes looking for spaces. (Leading and trailing whitespace is ignored.) Each file name in. The reason you got a problem is because of the process the shell uses to construct command lines. The argument of the function is regarded as a series of file names, separated by whitespace. If GNU Parallel is not packaged for your distribution, you can do a personal installation, which does not require root access. Once again, note the avoidance of braces for a simple variable expansion. GNU Parallel instead spawns a new process when one finishes - keeping the CPUs active and thus saving time: If you have 32 different jobs you want to run on 4 CPUs, a straight forward way to parallelize is to run 8 jobs on each CPU: Also, if the find command matches no files, the command will be run with no parameters on many commands (like cat) this will cause the program to. '-type f' will only look for files and not folders. ' will find all files in current folder and all the sub-folders. It will match files with single or multiple spaces. potentially creating additional problems. Use find command with a space between two wildcards. R stands for recursive and it also include symlinks. grep -inRsH 'Text to be searched' /path/to/dir (it can be '.') i stands for ignore case distinctions. GNU Parallel is a general parallelizer and makes is easy to run jobs in parallel on the same machine or on multiple machines you have ssh access to. If any pathname contains a space, newline, or tab, its name will be split (file a b will be incorrectly parsed as two files, a and b). This grep command will give you a precise result when you are searching for specific text on Linux. Run the same program for every block in a file.Run the same program for every line in a file.However, many tasks are extremely parallelizeable: (-q is only needed if the strings contain special characters - such as space).Īll new computers have multiple cores, but most programs are serial in nature and will therefore not use the multiple cores. will give you all files beginning (which is what the OP specifically required) with the substring abc. name "*.php" -print | tail -n 11 | parallel -q sed -i 's/string1/string2/g' In other words, item names must be in a single line, surrounded with quotes (single or double) and divided by spaces. ![]() This is useful if you want to process the file names before passing them to parallel. I would like to output the list of items in a folder in the folowing way: 'filename1' 'filename2' 'file name with spaces' 'foldername' 'folder name with spaces'. name "*.php" -print | parallel -q sed -i 's/string1/string2/g' If you have GNU Parallel you can do this: find. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |