The cat <<EOF syntax is very useful when working with multi-line text in Bash, eg. when assigning multi-line string to a shell variable, file or a pipe. Examples of cat <<EOF syntax usage in Bash: 1. Assign multi-line string to a shell variable $ sql=$(cat <<EOF SELECT foo, bar FROM db WHERE foo='baz' EOF )

Aug 2, 2019 · cat file1 file2 file3 ... fileN >> newBigFile This requires double the diskspace as file1... fileN takes up 100G, and then newBigFile takes another 100Gb, and then file1... fileN gets removed. The data is already in file1... fileN, doing the cat >> incurs read and write time when all I really need is for the hundreds of files to reappear as 1 ...

May 24, 2011 · +1. you only need the head not the whole cat :P (the command tail is part of the bash pun too) – SparK.

Nov 1, 2016 · ---> 40f9ed8e187d Removing intermediate container 85f6c8536520 Step 69 : RUN cat <<EOF >> /home/docker/.bashrc ---> Running in dcbb3d441f79 ---> 78acd9c2e5d5 Removing intermediate container dcbb3d441f79 Step 70 : EXPORT Unknown instruction: EXPORT What is the trick for run a cat command unix into image with Dockerfile ?

Apr 12, 2011 · It handles exactly this kind of work. Just copy all your driver relevant files(*.inf, *.cat, *.sys) to a directory on the target computer and use PnPUtil -i -a <InfName>.inf. Note: You will need to be in an administrator context to successfully use this tool.

Unix: cat cert2.pem cert1.pem root.pem > cert2-chain.pem Windows: copy /A cert1.pem+cert1.pem+root.pem cert2-chain.pem /A 2.2 Run this command. openssl verify -CAfile cert2-chain.pem cert3.pem 2.3 If this is OK, proceed to the next one (cert4.pem in this case) Thus for the first round through the commands would be

Oct 6, 2009 · $ cat /tmp/test.txt Line 1 Line 2 has leading space Line 3 followed by blank line Line 5 (follows a blank line) and has trailing space Line 6 has no ending CR There are four elements that will alter the meaning of the file output read by many Bash solutions:

Oct 16, 2010 · $ cat deluge-gtk.lock cat: deluge-gtk.lock: No such file or directory $ file deluge-gtk.lock deluge-gtk ...

Jun 26, 2011 · $ cat /proc/cpuinfo | awk '/^processor/{print $3}' | tail -n 1 NOTE: Since /proc/cpuinfo holds a number of entries corresponding to the cpus count, a processor field initial value is 0, don't forget to increment the value of the last cpu core by 1.

You can simply use the following command:-tail -NUMBER_OF_LINES FILE_NAME. e.g tail -100 test.log. will fetch the last 100 lines from test.log