Description:
Using and programming the Unix shell.
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how to pass file names get from grep to sed
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Dear all: suppose i want to replace cat with dog in all the files within a folder, how could I reach that with grep and sed? i try to use "grep -lr 'cat' * |sed -ei 's/cat/deg/' ", but sed seems cannot eat the file names piped by grep. How could I pass the file names to sed? appreciate your help, miloody... more »
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Determining caller for a shell function
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Hi, If I've an exported function in BASH, how can I distinguish among the following scenarios when the function is: * Invoked interactively by user from command line * Invoked from a function * Invoked from a sub-shell or a shell script (I could test this by inspecting $- for "i") Thanks Jeenu
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