Can I put comments (or something functionally equivalent) into a sed command file? subs.sed Answer Yes, comments can be added to a sed file using #. From the manual page of sed: Command Synopsis … The comment extends until the next newline (or the end of a -e script fragment).
Tag: gnu
sed command does not execute properly on gitlab runner
I have a script which needs to run npm run test and capture test coverage coverage value so here I am trying to capture the value 36.95 and output it in gitlab script which I am planning to add as a gitlab job. It seems that the runner is gnu. If I execute the below script on my local it
What is the point of “grep -q”
I was reading the grep man page and came across the -q option, which tells grep to “not write anything to standard output. Exit immediately with zero status if any match is found, even if an error was detected.” I don’t understand why this could be desirable or useful behavior. In a program …
Unable to build GNU automake – help2man can’t get `–help’ info from automake-1.16
I’m trying to compile and build automake 1.16 and it fails in the following way: I have searched and found similar issues on Stackoverflow and Github where the solution is to “yum install perl-Thread-Queue” But I do not have root access. How do I go about compiling automake successfully with…
Linux randomly deleted my file while compiling what do I do?
This is my error code. prog3.c is nowhere to be found, what on earth happened is there any way to get my file back?? The bold is the command I ran and the rest is the resultant console output Answer Your problem is here: -o prog3.c. gcc’s -o option is used to tell gcc which name it should give to
Replace characters on specific location every line
We got an exercise where we have to do certain things with the following text document: It’s all data seperated by a “|”. For this exercise, if the year of the first ascent is empty, I need to replace the “||” with “|unclimbed|” I can’t do it like this: Because …
configure: error: no acceptable C compiler found in $PATH
I am trying to Build and Install the Apache Thrift compiler and libraries I had to type this command is shown in instructions ./configure && make But I get this error: When I type in my command prompt gcc –version I get this gcc (GCC) 5.3.0 Copyright (C) 2015 Free Software Foundation, Inc. This …
How can GNU time utility ignores pipe symbol and takes all what left in command line as one execve argument?
Linux, if I run time tar -c stock_file | lz4 > stock_file.lz4, actually it makes something like time (tar -c stock_file | lz4 > stock_file.lz4), but if I write one little program: Then I build it to pretending_time and run it: Well well, the parameter is well not well | cat, then I have the check the so…
Attach to a GNU screen and then execute commands
I have seen some similar questions asked but the solutions don’t seem to work in my case. I am trying to SSH into a specific screen instance on a Node machine and then execute some commands My current process is this: On the remote machine I create a screen instance: screen -dmS “my_screen” …
Gnu sort: stray characters in field specification
sort doesn’t seem to like my key specification. Why? From the man page: -k, –key=KEYDEF : sort via a key; KEYDEF gives location and type KEYDEF is F[.C][OPTS][,F[.C][OPTS]] for start and stop position, where F is a field number and C a character position in the field; both are origin 1, and the st…