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What does each-exec do in the find command?
Each -exec also acts like a “test” on the pathnames found by find, just like -type and -name does. If the command returns a zero exit status (signifying “success”), the next part of the find command is considered, otherwise the find command continues with the next pathname.
Where does a prefix go in a directory?
Data files used by the software go in directory /share. That’s what it means for directory to be a prefix. It’s the parent directory that contains the locations in which different files will be installed. It thus appears as a prefix in the absolute paths of most files and directories created by running make install or sudo make install.
What does–prefix do exactly when used in./ configure?
The most common option for this is –prefix. The default prefix, when you don’t tell configure what to use, is usually /usr/local. (Occasionally, a program or library’s source code defaults to some other prefix. Fortunately this is rare.) So ./configure is usually equivalent to ./configure –prefix=/usr/local.
What does the-Exec option do in a shell?
The -exec option takes an external utility with optional arguments as its argument and executes it. If the string {} is present anywhere in the given command, each instance of it will be replaced by the pathname currently being processed (e.g. ./some/path/FILENAME ). In most shells, the two characters {} does not need to be quoted.
What should I use in find-exec sh-c?
You should use something relevant there (like sh or find-sh ), not things like _, -, — or the empty string, as the value in $0 is used for the shell’s error messages: GNU parallel works differently.
How to use sh-c without find in Linux?
A simple example of using sh -c by itself, without find: This passes two arguments to the child shell script. These will be placed in $0 and $1 for the script to use. The string sh. This will be available as $0 inside the script, and if the internal shell outputs an error message, it will prefix it with this string.
Is it possible to execute an exec in a shell?
The command that -exec can execute is limited to an external utility with optional arguments. To use shell built-ins, functions, conditionals, pipelines, redirections etc. directly with -exec is not possible, unless wrapped in something like a sh -c child shell.