You might think awk is so very powerful that it could easily replace grep and sed and tr and sort and many more, and in a sense, you'd be right. However, awk is just one tool in a toolbox that's overflowing with great options. You have a choice about what you use and when you...
One frequent error is the ‘No such file or directory’ message. This error surfaces when grep can’t locate the file or directory you specified. It could be due to a typo in the filename or the file or directory not existing in the specified location. To resolve this error, double-che...
grep -v ^\# /etc/apache2/apache2.conf | grep . The-voption tellsgrepto invert its output, meaning that instead of printing matching lines, do the opposite and print all of the lines that don’t match the expression, in this case, the#commented lines. Note that we also usedgrep .at...
followed by a word or words. Use the long format when using them in scripts, so that it becomes obvious what the grep command is doing. Use the short notation in your daily tasks and on the command line, to save on typing and speed up your work. ...
Please refer to our previous tutorials in theAwkseries: How to Filter Text or String Using Awk and Regular Expressions – Part 1 How to Use Awk to Print Fields and Columns in File – Part 2 How to Use Awk to Filter Text Using Pattern-Specific Actions – Part 3 ...
Run the following command to check system-wide THP usage: Raw # grep AnonHugePages /proc/meminfo AnonHugePages: 632832 kB Note:Red Hat Enterprise Linux 6.2 or later publishes additional THP monitoring via/proc/vmstat: Raw # egrep 'trans|thp' /proc/vmstat ...
grepWith Multiple Strings To use multiple phrases, separated by newlines, to capture relevant matches in a file or text stream from a program, you can use the-F/--fixed-stringsto specify them. You can pass in a string shown below instead for a small number of matches, with a dollar sig...
To modify a service’s configuration, use thegrep,awk, andsedcommands. grep locates the pattern in the configuration file that needs modification. Meanwhile, awk retrieves the value, and sed replaces the target string with the new value. ...
grep "KernelPageSize: 2048 kB" /proc/[[:digit:]]*/smaps | awk {'print $1'} | cut -d "/" -f3 | sort | uniq [Step2]Use the following command to calculate the size of the hugepage used by a specified process, assumption that HugePage size is 2048 kB, the output unit is MiB...
Hi I need to grep some data from the same syntax, but still not work perfectly : cat RBS_100310_old | sed -e 's/=/ /g' -e 's/,/ /g' | awk '/mobrowser_pid/...