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How can I quickly sum all numbers in a file?
...ng you give it. My initial thought was that you shouldn't post while intoxicated but then I noticed who you were and remembered some of your other Perl answers :-)
– paxdiablo
Apr 23 '10 at 23:52
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Use PHP to create, edit and delete crontab jobs?
...
This should do it
shell_exec("crontab -l | { cat; echo '*/1 * * * * command'; } |crontab -");
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Git Diff with Beyond Compare
...essful if the file has been updated, otherwise the user is prompted to indicate the success of the merge.
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Bash history without line numbers
... print when used with awk is more evident if you used awk to print a file (cat would be faster to type instead of awk, but this is for illustrating a point).
[Ex] Using awk to display the contents of a file with $0
$ awk '{print $0}' /tmp/hello-world.txt
Hello World!
[Ex] Using awk to display th...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
...still install into the target directory. My issue was additionally complicated because i installed python3 as well, but +1 for the virtualenv solution.
– Josh Brown
May 1 '18 at 18:37
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What does $@ mean in a shell script?
...e scope a function), it expands to the arguments passed to such script.
$ cat my-sh
#! /bin/sh
echo "$@"
$ ./my-sh "Hi!"
Hi!
$ put () ( echo "$@" )
$ put "Hi!"
Hi!
Word splitting.
Now, another topic that is of paramount importance when understanding how $@ behaves in the shell is word split...
Alternate output format for psql
... | 10304
dda_type | CHECKING
dda_status | PENDING_VERIFICATION
dda_is_deleted | f
dda_verify_op_id | 44938
version | 2
created | 2012-03-06 21:37:50.585845
modified | 2012-03-06 21:37:50.593425
c_id |
dda_nickname |
dda_a...
How can I view a git log of just one user's commits?
...e as black and white as this. Now, I agree with unstun that we ought to educate people how to do things for themselves - that's a good idea. Where unstun went slightly wrong is making the assumptions a) That the OP knows how to search a man page, and more importantly b) That the OP knows to search f...
A worthy developer-friendly alternative to PayPal [closed]
...ant to donate Christmas presents to poor children (regretsy.com/2011/12/05/cats-1-kids-0)
– Sire
Sep 3 '12 at 17:50
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psql: could not connect to server: No such file or directory (Mac OS X)
... was there".
I took a look at my server logs and saw the following error:
cat /usr/local/var/postgres/server.log
at the end of the server log I see the following error:
FATAL: pre-existing shared memory block (key 5432001, ID 65538) is still in use
HINT: If you're sure there are no old server ...